What are the 3 types of chemical formula?

Explanation:

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CHEMISTRY

Zoey C. asked • 06/05/19

Calcium hydroxide reacts with sodium phosphate to produce calcium phosphate and sodium hydroxide. If 100 grams of calcium hydroxide reacts with 100 grams of sodium phosphate,

determine the amount of each chemical present when the reaction is complete

Grams calcium hydroxide =?

Grams of sodium phosphate=?

Grams of calcium phosphate=?

Grams of sodium hydroxide?

Mass reactants=?

Mass after reaction?

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J.R. S. answered • 06/06/19

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3Ca(OH)2 + 2Na3PO4 ==> Ca3(PO4)2 + 6NaOH ... balanced equation

First, find the limiting reactant:

moles Ca(OH)2 present = 100 g x 1 mole/74.09 g = 1.35 moles (divided by 3-->0.45)

moles Na3PO4 present = 100 g x 1 mole/163.9 g = 0.610 moles (divided by 2-->0.31)

LIMITING reactant is Na3PO4

There will be zero grams Na3PO4 left after the reaction

For grams Ca(OH)2 left: 0.610 mol NaP x 3 mol Ca(OH)2/2 mol NaP = 0.915 mol Ca(OH)3 used up

Grams left over: 1.35 mol - 0.915 mol = 0.435 mol x 74.09 g/mol = 32 g left over (30 g if use 1 sig. fig.)

For grams of calcium phosphate left: 0.610 mol NaP x 1 mol CaP/2 mol NaP = 0.305 mol CaP formed

Grams at end of rx: 0.305 moles CaP x 310 g/mol = 94 g (90 g if use 1 sig. fig.)

For grams NaOH left: 0.610 mol NaP x 6 mol NaOH/2 mol NaP = 1.83 moles NaOH formed

Grams at end of rx: 1.83 moles NaOH x 40 g/mol = 73 g (70 g if use 1 sig. fig.)

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According to stoichiomtry, 19.99 grams of calcium hydroxide will be needed to completely react with 29.5 grams of sodium phosphate.

Stoichiometry is a process of the determination of proportions of elements or compounds that are present in a chemical reaction. The related relations are based on law of conservation of mass and law of combining weights and volumes.

Stoichiometry is often  used in quantitative analysis for measuring concentrations of substances which are  present in the sample.

As per the stoichiometry of the the given balanced chemical equation,\(222.27\ g\) calcium hydroxide gives \(327.88 \ g\) sodium phosphate, thus,\(29.5 \ g\) sodium phosphate requires,

\(\dfrac{29.5}{327.88}\times{222.27}\\=19.99 \ g\)

Thus, 19.99 grams of calcium hydroxide will be needed to completely react with 29.5 grams of sodium phosphate.

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Answer/Explanation

am not sure but I think its

Standard temperature = 273K

2.50 LTemperature

The volume of the granite as determined by water displacement is 9.35 mL. This value in cm³ is 9.35cm³.

The conversion factor of mL and cm³ is given as follows: 1 mL = 1 cm³

According to this question, the volume of the granite as determined by water displacement is 9.35 mL.

This value in cm³ can be converted as follows:

9.35mL × 1 = 9.35cm³

Therefore, the volume of the granite as determined by water displacement is 9.35 mL. This value in cm³ is 9.35cm³.

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Water displacement indicated the volume of the granite to be 9.35 mL. This measurement in cm3 is 9.35cm³.

How do you compute volume in cm³?

The mL to cm³ conversion factor is as follows: 1 mL = 1 cm³

The volume of the granite as calculated by water displacement is 9.35 mL, according to this inquiry.

This cm³ value may be transformed as follows:

9.35mL × 1 = 9.35cm³

As a result of the water displacement, the volume of the granite is 9.35 mL. This measurement in cm3 is 9.35cm³.

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\({ \qquad\qquad\huge\underline{{\sf Answer}}} \)

Here we go ~

Mass of 1 mole C - 12 atom = 12 g

So, mass of 1 carbon - 12 atom = ( 12 / 1 mole ) g

that is :

\(\qquad \sf  \dashrightarrow \: \cfrac{12}{6.022 \times 10 {}^{23} } \: \: g\)

[ since 1 mole = 6.022 × 10²³ ]

\( \qquad \sf  \approx2 \times 10 {}^{ - 23} \: \: g\)

Molarity :

Molarity is defined as " The number of moles of solute present in per litre of solution "

Molality :

Molality is defined as " Number of moles of solute present per kg mass of solvent "

As per the given reaction ~

\(\qquad \sf  \dashrightarrow \: Zn + 2\:H Cl \rightarrow ZnCl_2 + H_2\)

32.65 g of zinc reacted,

[ Number of moles of zinc reacted = mass of zinc reacted divided by its formula Weight ]

\(\qquad \sf  \dashrightarrow \: number \: \: of \: \: moles = \cfrac{32.65}{65.3} \: \: mol\)

\(\qquad \sf  \dashrightarrow \: number \: \: of \: \: moles = \cfrac{1}{2} \: \: mol\)

so, we can say that " half mole Zinc reacted with 1 mole of HCl to form half mole of Zinc chloride and half mole of Hydrogen gas "

And we already know that 1 mole of any gas occupies 22.7 litre volume at STP.

So, volume of Hydrogen gas Liberated :

\(\qquad \sf  \dashrightarrow \: \cfrac{1}{2} \times 22.7\)

\(\qquad \sf  \dashrightarrow \: 11.35 \: \: litres\)

The relationship between Molarity and molality can be expressed as :

\(\qquad \sf  \dashrightarrow \: M =\cfrac{ 1000(m \times d)}{1000+(m \times F)}\)

Terms :

\(\qquad \sf  \dashrightarrow \: M =\cfrac{ 1000(3 \times 1.110)}{1000+(3 \times 40)}\)

\(\qquad \sf  \dashrightarrow \: M =\cfrac{ 1000( 3.330)}{1000+120}\)

\(\qquad \sf  \dashrightarrow \: M =\cfrac{ 3330}{1120}\)

\(\qquad \sf  \dashrightarrow \: M =2.973 \: mol \: l {}^{ - 1} \)

Answer:

Isotope 2

Explanation:

Isotope 2 is the most abundant. Its percent abundance is 78.68% which is the largest percentage, and therefore the most common of the isotopes presented.

Good luck!

Answer: Hi! to find the density of this object you have to calculate the volume first.

V= l x w x h

the volume of this is 40

now that we have the volume we can calculate the density by using a formula

P= m/v

= 300(mass) / 40(volume)

= 7.5 (don’t forget to add units if nessceary)

Explanation: hope this helps! :)

The solubility product constant, Ksp, for calcium phosphate (Ca3(PO4)2) can be expressed as the product of the concentrations of the ions in a saturated solution of the compound

Ksp = [Ca₂⁺ ]³ [(PO₄)³⁻]²

The solubility product constant (Ksp) is a measure of the solubility of an ionic compound in water. For calcium phosphate (Ca₃(PO₄)²), the Ksp expression is given by the product of the concentrations of the ions present in a saturated solution of the compound. In the case of Ca₃(PO₄)², the Ksp expression is Ksp = [Ca₂⁺]³[PO₄³⁻]², where [Ca₂⁺] is the concentration of calcium ions and [PO₄³⁻] is the concentration of phosphate ions in the solution.

The value of Ksp is fixed for a particular compound at a given temperature and pressure and is used to calculate the solubility of the compound in a given solution. If the product of the ion concentrations exceeds the Ksp value, the compound will precipitate out of solution until equilibrium is reached.

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Answer:

Explanation:

7 times 200 is 1400 grams but thats not the question it asks in kilo's so i got a converter and the correct answer is 1.4 kilograms

Have a nice day :)

please give me brainiest lol

Answer:

Explanation:

1 kg is 1000 grams

1 peach is 200 grams

7 peaches are 200*7 = 1400 grams

Therefore the number of kg = 1400 grams // 1000 grams /kg

The number of kg = 1.4 kg.

  The density of cork is around 0.24 to 0.32 g/cm³.

Cork is a lightweight and porous material, and its density varies depending on factors such as the type of cork and its production process. The density of natural cork ranges from 0.24 to 0.32 g/cm³, while the density of agglomerated cork (made by compressing cork granules) can be higher, ranging from 0.40 to 0.70 g/cm³. The low density of cork makes it a popular choice for a variety of applications, including wine bottle stoppers, insulation, and flooring.  

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The fruit basket recipe will the specialty store need to fulfill all 725 orders is 120 strawberries.

Fruit basket is defined as a gift basket filled with a variety of fruits.

A fruit basket can be called as a punnet is a compact box or square basket used for gathering, transporting, and selling fruits and vegetables, typically for small berries.

As one basket has 6 strawberries.

So, for completing 725 order we need

= 725 / 6

= 120.8 = 120 strawberries

Thus, the  fruit basket recipe will the specialty store need to fulfill all 725 orders is 120 strawberries.

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Answer:

Report of the climate change can help the people. As when people wants to go for  picnics or somewhere else. They did not have any idea that what will be the climate when they go. Report of climate change help him to choose the right time for going on picnics or  somewhere else.

Answer:

The report mentioned ways that people’s lives may change because of climate change, such as rising sea levels, reduced crop efficiency, and heat waves. This information may encourage the public to change the way they use energy, for example how they heat their homes or power their cars.

Explanation:

The given alkene can undergo ozonolysis in the presence of ozone (O3) followed by reduction with zinc (Zn) and water (H2O) to yield two products.

The ozonolysis reaction cleaves the double bond in the alkene and generates two carbonyl compounds, which can then be reduced by zinc to form aldehydes or primary alcohols depending on the reaction conditions.

The ozonolysis of the given alkene, 2-methyl-2-pentene, results in the formation of two carbonyl compounds: propanal and 2-methylpropanal. These carbonyl compounds can then undergo reduction with zinc and water to form the corresponding aldehydes or primary alcohols.

The reduction of propanal with zinc and water results in the formation of propan-1-ol, which is a primary alcohol. The reaction involves the addition of hydrogen atoms to the carbonyl group of propanal, followed by the removal of the resulting oxygen atom as water. The reduction of 2-methylpropanal with zinc and water results in the formation of 2-methylpropan-1-ol, which is also a primary alcohol. The reduction mechanism is similar to that of propanal, but with the addition of hydrogen atoms to the carbonyl group of 2-methylpropanal instead.

In summary, the products formed when 2-methyl-2-pentene is treated with ozone followed by zinc and water are propan-1-ol and 2-methylpropan-1-ol. These products are formed by ozonolysis of the alkene to generate carbonyl compounds, followed by reduction of the carbonyl compounds to primary alcohols with zinc and water. This reaction demonstrates the versatility of ozonolysis and reduction reactions in synthesizing aldehydes and primary alcohols from alkenes, which are important building blocks in organic chemistry.

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The expected mass of copper produced is approximately 357.13 grams. To determine the mass of copper produced when hydrogen gas reduces copper(II) oxide, we need to use the balanced chemical equation and the stoichiometry of the reaction.

The balanced chemical equation for the reaction between hydrogen gas (H2) and copper(II) oxide (CuO) is:

2 H2(g) + CuO(s) → Cu(s) + H2O(g)

From the equation, we can see that 2 moles of hydrogen gas are required to produce 1 mole of copper. Therefore, we need to convert the volume of hydrogen gas to moles, and then use the mole ratio to find the moles of copper.

First, let's convert the volume of hydrogen gas to moles using the ideal gas law:

PV = nRT

Where:

P = pressure (STP is 1 atm)

V = volume of gas (250 L)

n = number of moles of gas

R = ideal gas constant (0.0821 L·atm/(mol·K))

T = temperature (STP is 273.15 K)

Plugging in the values:

(1 atm)(250 L) = n(0.0821 L·atm/(mol·K))(273.15 K)

n = (1 atm)(250 L) / (0.0821 L·atm/(mol·K))(273.15 K)

n ≈ 11.24 moles of H2

According to the stoichiometry of the balanced equation, 2 moles of H2 react to produce 1 mole of Cu. Therefore, the moles of Cu produced will be half of the moles of H2 used:

moles of Cu = 11.24 moles H2 / 2

moles of Cu ≈ 5.62 moles

Finally, we can calculate the mass of copper using the molar mass of copper (Cu):

mass of Cu = moles of Cu × molar mass of Cu

mass of Cu = 5.62 moles × 63.55 g/mol

mass of Cu ≈ 357.13 g

Therefore, the expected mass of copper produced is approximately 357.13 grams.

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Aqueous potassium permanganate that has been diluted with carbon tetrachloride with bromine. Pentane and 1-pentane are distinguished by reagents.

An unsaturation test can be performed using the bromine in carbon tetrachloride solution. Use 100 ml of carbon tetrachloride and bromine to evaluate the unsaturation of a compound when it is insoluble in water. The bromine water turns gray as a result of how the bromine reacts with an alkene's carbon-carbon double bonds. With the help of bromine, an alkene is transformed into an alkane by breaking the carbon-carbon bond.

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To calculate the new volume of a balloon when the temperature drops, use the formula \(V2 = V1(T2/T1)\). The new volume is 2.34 L.

To compute the new volume of a gas when the temperature transforms, we want to utilize the ideal gas regulation, which expresses that \(PV = nRT\), where P is the strain of the gas, V is its volume, n is the quantity of moles, R is the all inclusive gas steady, and T is the outright temperature. We can accept that the strain and number of moles of the gas stay consistent.

Nonetheless, in this issue, we are given the volume and temperature of an inflatable, which suggests that the gas inside is certainly not an optimal gas. In any case, we can involve the ideal gas regulation as an estimation since the gas is near ideal circumstances.

To tackle for the new volume, we can utilize the recipe \(V2 = V1(T2/T1)\), where V1 is the underlying volume, T1 is the underlying temperature, T2 is the last temperature, and V2 is the last volume we are attempting to find.

Subbing the given qualities, we get:

\(V2 = 2.50 L * (284.15 K/303.15 K) = 2.34 L\)

Hence, on the off chance that the temperature decreases from 30.0∘C to 11.0∘C, the volume of the inflatable would diminish from 2.50 L to 2.34 L. The recipe to utilize is \(V2 = V1(T2/T1)\), which relates the underlying volume and temperature to the last volume and temperature utilizing a consistent proportion.

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Explanation:

A. Hydrogen bonding is present in CS2 but not in CO2.

B. CS2 has greater dipole moment than CO2 and thus the dipole-dipole forces in CS2 are stronger.

C. CS2 partly dissociates to form ions and CO2 does not. Therefore, ion-dipole interactions are present in CS2 but not in CO2.

D. The dispersion forces are greater in CS2 than in CO2.

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a) The concentration of the hydrogen ions is  1 * 10^-7 M

b) The concentration of the hydroxide ions is  1 * 10^-7 M

c) Ratio of the hydrogen to the hydroxide ion is 1:1

We know that the pH of the solution would have to do with ratio of the hydrogen ion and the hydroxide ions that we have in the solution. We know that the pH values that range from 0 -6 is acid, 7 is neutral and 8 - 14 is basic.

Then we have that;

Concentration of the hydrogen ion in the solution is obtain from the formula;

[H^+] = Antilog (-pH)

At pH 7 we have;

[H^+] = Antilog (-7)

= 1 * 10^-7 M

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Answer:

Period 2

Explanation:

From the picture provided, I am guessing this is Fluorine. Normal Fluorine has 9 protons, electrons, and atomic number. Thus, it can be found in the second period.

***Period # = # of electron shells

The marked lines on a beaker allow you to measure the height of a liquid, and by multiplying the height by the circular area of the beaker, you can determine the volume of the liquid. This method relies on the assumption that the liquid maintains its shape in the beaker and fills the circular area of the beaker.

The marked lines on a beaker are useful for measuring the volume of a liquid because they indicate specific measurements. Here's how it works:

1. A liquid maintains its shape in the beaker, so the beaker can measure the liquid's height. This means that the level of the liquid in the beaker corresponds to its volume.

2. The height of the liquid can be measured by looking at the marked lines on the side of the beaker. Each line represents a specific volume measurement, such as 100 ml or 200 ml. By observing which line the liquid reaches, you can determine the approximate volume of the liquid in the beaker.

3. However, it's important to note that the height of the liquid alone does not equal its volume. Instead, the volume is determined by multiplying the liquid's height by the circular area of the beaker.

4. The circular area of the beaker is the area of the base of the beaker, which is a circle. This area can be calculated using the formula A = πr^2, where A represents the area and r represents the radius of the base.

5. By multiplying the liquid's height by the circular area of the beaker, you can calculate the volume of the liquid. This is because the volume of a cylinder (such as a beaker) is equal to the height multiplied by the base area.

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Homogeneous and heterogeneous mixture in colloid, suspension and solution

A colloid is a heterogeneous mixture in which the dispersed particles are intermediate in size between those of a solution and a suspension and within the categories of homogeneous and heterogeneous mixtures there are more specific types of mixtures including solutions is alloys, suspensions, and colloids and a solution is a mixture where one of the substances dissolves in the other and the substance that dissolves is called the solute

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Answer:

116 years

Explanation:

To solve this, we will use the half life equation;

A(t) = A_o(½)^(t/t_½)

Where;

A(t) is the amount of strontium left after t years;

A_o is the initial quantity of strontium that will undergo decay;

t_½ is the half-life of strontium

t is the time it will take to decay

We are given;

A(t) = 7.5 g

A_o = 120 g

From online values, half life of strontium-90 is 29 years. Thus, t_½ = 29

Thus;

7.5 = 120 × ½^(t/29)

Divide both sides by 120 to get;

7.5/120 = ½^(t/29)

0.0625 = ½^(t/29)

In 0.0625 = (t/29) In ½

-2.772589 = (t/29) × (-0.693147)

(t/29) = -2.772589/(-0.693147)

t/29 = 4

t = 29 × 4

t = 116 years

The solubility of a compound in a particular solvent depends on several factors, including the polarity of the solvent and the solute. Nonane is a nonpolar solvent, which means that it cannot dissolve polar compounds effectively. In general, compounds with nonpolar properties are more soluble in nonane compared to polar compounds.

1-pentanol, ethanol and acetic acid are polar compounds because they contain a hydroxyl group (-OH) or carbonyl group (C=O) that makes them more soluble in polar solvents such as water. Benzene and ethyl methyl ketone are nonpolar compounds because they lack any polar functional groups and contain only carbon and hydrogen atoms.
Based on their polarities, we can predict that benzene and ethyl methyl ketone will be the most soluble in nonane because nonane is a nonpolar solvent. The polar compounds (1-pentanol, ethanol, and acetic acid) will not dissolve well in nonane due to their polarity. Acetic acid may have some solubility in nonane because it has a relatively small polar functional group and a large nonpolar hydrocarbon chain. In conclusion, the most soluble compound in nonane is likely to be benzene or ethyl methyl ketone, both of which are nonpolar. The polar compounds are not expected to be very soluble in nonane due to the nonpolar nature of the solvent.

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The average atomic mass of the isotope is 70.64.

Isotopes are different forms of the same element that have the same number of protons but different numbers of neutrons. An element with two isotopes has two distinct mass numbers, and their relative abundances can be calculated based on their molecular masses and their natural occurrences.

In this case, the element has two isotopes: one with a mass number of 69 and an abundance of 60.11%, and the other with a mass number of 71 and an abundance of 39.89%. To calculate the average atomic mass of the isotope, we need to multiply the mass of each isotope with its respective abundance and add them up.

So, 69.0 × 0.6011 + 71.0 × 0.3989 = 41.7069 + 28.9369 = 70.6438.

Therefore, the average atomic mass of the isotope is 70.64 to four significant figures. It's important to note that this value represents the weighted average of the masses of all isotopes of the element and gives an approximation of the average atomic mass of the element in nature.

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The resulting element after an element with atomic number 104 undergoes alpha decay will have 102 protons.

Alpha decay is a type of radioactive decay in which an atomic nucleus emits an alpha particle, which consists of 2 protons and 2 neutrons (4He). In the given example, the element with atomic number 104 undergoes alpha decay, which means it loses 2 protons and 2 neutrons during this process.

The number of protons determines the atomic number of an element. Therefore, after losing 2 protons due to alpha decay, the resulting element will have an atomic number of 104 - 2 = 102. Thus, the resulting element will have 102 protons.

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Answer:

Z=22.70

Explanation:

It is given that,

An element Z that has two naturally occurring isotopes with the following percent abundances as follows :

The isotope with a mass number 22 is 65.0% abundant; the isotope with a mass number 24 is 35.0% abundant.

The average atomic mass for element Z is given by :

\(Z=\dfrac{22\times 65+24\times 35}{100}\\\\Z=22.7\)

So, the average atomic mass for element Z is 22.70.

Answer: 164.09 g/mol

Explanation:

(ii) In this experiment the student uses 1.70 g of the anhydrous copper(II) sulfate.

Calculate the molar enthalpy change (delta H) in kJ/mol.

Include a sign in your answer.

[Mr, of CuSO4 =

The law of diminishing marginal rate of substitution indicates that the rate at which one input can be substituted for another decreases as the quantity of one input increases, leading to isoquants being bent toward the origin.

In other words, as the quantity of one good increases, the individual is willing to sacrifice fewer units of the other good to obtain an additional unit of the first good. This reflects a diminishing rate of substitution between the two goods.

The reason why the law of diminishing marginal rate of substitution suggests that isoquants must be bent toward the origin is rooted in the concept of diminishing marginal utility. As more units of a particular input (e.g., labor or capital) are added while holding other inputs constant, the additional output gained from each additional unit of the input will decrease. This diminishing marginal productivity leads to a decreasing MRS.

When isoquants (which represent different combinations of inputs that produce the same level of output) are bent toward the origin, it reflects the fact that as more of one input is used, the amount of the other input that needs to be substituted decreases. This bending signifies the diminishing MRS and captures the idea that a larger quantity of one input can be substituted for a smaller quantity of the other input to maintain the same level of output.

Overall, the law of diminishing marginal rate of substitution indicates that the rate at which one input can be substituted for another decreases as the quantity of one input increases, leading to isoquants being bent toward the origin.

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Answer:

\(\boxed {\boxed {\sf 20.51 \ g \ NH_3}}\)

Explanation:

If we want to convert from moles to grams, we must use the molar mass. This values tells us the mass of 1 mole of a substance. They can be found on the Periodic Table; they are equivalent to the atomic masses, but the units are grams per mole (g/mol) instead of atomic mass units (amu).

We have the compound ammonia or NH₃. Look up the molar masses for the individual elements.

Check for subscripts. There is a subscript of 3 after hydrogen. This means there are 3 atoms of hydrogen in 1 molecule of ammonia. We should multiply hydrogen's molar mass by 3.

Add nitrogen's molar mass.

Now, use the molar mass as a ratio.

\(\frac {17.031 \ g \ NH_3}{1 \ mol \ NH_3}\)

Since we are trying to find the mass of 1.204 moles, we multiply by that value.

\(1.204 \ mol \ NH_3 *\frac {17.031 \ g \ NH_3}{1 \ mol \ NH_3}\)

The units of "moles of ammonia" cancel.

\(1.204 *\frac {17.031 \ g \ NH_3}{1}\)

The denominator of 1 can be ignored.

\(1.204 * 17.031 \ g \ NH_3\)

\(20.505324 \ g \ NH_3\)

The original measurement of moles has 4 significant figures, so our answer must have the same. For the number we calculated, that is the hundredth place.

The 5 in the thousandth place tells us to round to 0 to a 1 in the hundredth place.

\(20.51 \ g \ NH_3\)

1.204 moles of ammonia is equal to 20.51 grams of ammonia.