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Tell me with your own words;

How to write a formula of an ionic and covalent compound.
*Include metals with more than one charge.
*Include polyatomic ions

energy flows through this system of interacting parts

Wind → Turbine → Generator → electricity

Kinetic energy is the energy an object has because of its motion.  force must be applied to it. To apply a force, we must exert effort. Energy is transmitted to the object after work is accomplished, which causes it to move at a new, constant pace

Energy flows to the system -  by moving a shaft which is connected to a generator, and thereby producing electrical energy through electromagnetism.

Energy enters system - The blades are connected to a drive shaft that turns an electric generator, which produces (generates) electricity.

Energy Charges - produced (generated) electricity runs through sytem

and stored in battery.

Energy leaves system - energy leaves the system, its sign is negative.

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Answer:

Reacts with salt to from an acid

The ksp value for calcium hydroxide at this temperature is 5.20 × 10⁻⁶.

Ksp is an equilibrium constant of a solid substance dissolved in a liquid solution.

Given that, the volume of water is 0.178 l, 0.264 g of Ca(OH)² dissolves in enough water

The solution equilibrium is

Ca(OH)² = Ca + 2OH

The molar solubility is

0.186 / 74.00  / 0.230 = 0.0109 M

The ksp value will be

Ksp = (s) (2S)²

Putting the values in the formula

(0.0109) x (2 x 0.0109)² = 5.20 × 10⁻⁶.

Thus, the ksp value for calcium hydroxide is 5.20 × 10⁻⁶.

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Molar absorptivity and the concentration of the solution whose absorbance is 0.52 at 525nm is 2600M-1 cm-1 and 0.20mM.

Molar absorbance is the measure how strongly a chemical species absorbs at given  wavelength of light. Beers law relates the absorbance of a solution to its molar concentration. Beers law states that the light that absorbs by the solution is directly proportional to the concentration of the substance absorbing the light.

Absorbance and concentration are related to each other using the path length of light and molar absorptivity of the substance. Molar absorptivity of a substance is given by,

          A= E.I.C

          0.26= 1.00cm .e . 0.10 . 10-3 M

           e= 0.26 / 0.10 *10-3 M.cm

              = 2600M-1cm-1

In the same way we have to calculate the concentration of the another sample using path length and molar absorptivity which are same for both the samples .

Calculating the relation, we got the concentration of 0.2mM.

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Answer:

Answer is D dont forget to mark btainlist

Answer:

\(\boxed {\boxed {\sf D. \ H_2O_2}}\)

Explanation:

A covalent compound is a molecule made up of covalent bonds, where the atoms share pairs of valence electrons. These compounds consist of two or more nonmetals.

Essentially, if a compound contains a metal, it is an ionic or metallic compound, not a covalent compound.

A. NaCl

This is sodium chloride. It contains sodium (Na) and chlorine (Cl). Sodium is a metal, so this is ionic.

B. CaO

This is calcium oxide. It contains calcium (Ca) and oxygen (O). Calcium is a metal, so this is ionic.

C. MgS

This is magnesium sulfide. It contains magnesium (Mg) and sulfur (S). Magnesium is a metal, so this is ionic.

D. H₂O₂

This is hydrogen peroxide. It contains hydrogen (H) and oxygen (O). Both of these elements are non-metals, so this is a covalent compound.

The correct choice is D. H₂O₂

Answer:

 2H₂   +   O₂  →   2H₂O

Explanation:

The expression of the equation is given as:

              _H₂   +   2O₂  →   2H₂O

Now for expression above,

                           Reactants                                          Products

H                              2                                                            4

O                              4                                                           2

to balance the equation, we use 2 moles of hydrogen gas and 1 mole of oxygen gas;

           2H₂   +   O₂  →   2H₂O

If ADP (two phosphates) were hydrolyzed to AMP, how would you expect this reaction to compare with the hydrolysis of ATP to AMP?

ADP and ATP are both hydrolyzed to give AMP, the only difference remains in the side product formed which is pyrophosphate for ATP hydrolysis and inorganic phosphate for ADP hydrolysis.

What is ATP hydrolysis?

Adenosine triphosphate (ATP) contains highly energetic phosphoanhydride bonds that, when broken, such as occurs in muscles, release chemical energy through a catabolic reaction process called ATP hydrolysis. Adenosine diphosphate (ADP) and an inorganic phosphate are the end result (Pi). Adenosine monophosphate (AMP), energy, and another inorganic phosphate can all be produced by further hydrolyzing ADP (Pi). The final step in the energy chain from food or sunlight to useful work like muscle contraction, the creation of electrochemical gradients across membranes, and life-sustaining biosynthetic processes is ATP hydrolysis.

ATP + H 2 O → AMP + Pyrophosphate(PP)ADP + H 2 O → AMP + Inorganic Phosphate(Pi)

Thus, ADP and ATP are both hydrolyzed to give AMP, the only difference remains in the side product formed which is pyrophosphate for ATP hydrolysis and inorganic phosphate for ADP hydrolysis.

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Answer:

The answer is A

Explanation:

A had higher frequency and higher the frequency of an object the higher its pitch still be

Answer:

The answer is B, a value or characteristic that can take different values

Explanation:

ex.) 1s + 3

s is the variable

Variables are the varying or unchangeable data or factors in an experimental design. It can be defined as a characteristic that can have different values. Thus, option B is correct.

Variables are experimental characteristics that may be consistent or can be changeable. In an experimental design, the variables are used to analyze the cause and effect.

The variables of an experiment can be dependent, independent, or controlled. The varying factors in an experiment to analyze are called independent variables.

The factors that depend and respond to the effect of the independent variables are called dependent variables. These all values are contrasted to the control group with a fixed value.

Therefore, in option B, the variables are the characteristics with the same or different values.

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C8 columns refer to chromatography columns that contain a stationary phase consisting of hydrocarbon chains with eight carbon atoms. c8 columns means none of the given options. The correct answer is (d) None of the above.

C8 columns refer to chromatography columns that contain a stationary phase consisting of hydrocarbon chains with eight carbon atoms. These carbon chains are typically covalently bonded to a solid support material.

The C8 designation represents the length and composition of the hydrocarbon chains in the stationary phase.

These columns are commonly used in chromatography techniques, such as reversed-phase liquid chromatography, where nonpolar compounds are separated based on their interactions with the hydrophobic stationary phase.

The C8 stationary phase provides moderate retention for analytes with different polarities, allowing for effective separation.

The statement about ionic bonding or the presence of a phenyl group is not applicable to C8 columns.

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Answer:

the pressure exerted in pascals is 0.5 Pa

Explanation:

The computation of the pressure exerted in pascals is shown below:

As we know that

Pressure = force ÷ area

= 25 ÷ 50

= 0.5 Pa

Hence, the pressure exerted in pascals is 0.5 Pa

We simply applied the above formula so that the correct pressure could come

Answer:

2 moles of hydrogen gas reacts with 1 mole of oxygen gas to yield 2 moles of water. 4 grams of hydrogen gas reacts with 32 grams of oxygen gas to yield 36 grams of water. Oxygen gas is insufficient since it is only 4 grams. This means that all oxygen gas will react to a proportionate amount of hydrogen to form water.

Explanation:

BORK BORK Hope this helps <3

CAN I HAVE BEPIS

Answer:

About 96 to 256 ATP molecules are produced.

Explanation:

About 96 to 256 ATP molecules may be synthesized in the full metabolism in oligosaccharide because one oligosaccharide molecule has 3 to 8 glucose atoms. About 30 to 32 ATP are produced from one glucose molecule so from three glucose molecule, 96 ATP produced whereas 256 ATP molecules are produced from 8 glucose molecules so we can say that About 96 to 256 ATP molecules from one oligosaccharide.

Answer: hope this helps :)

Explanation:

Heterogeneous:

soy sauce, pizza, fruit salad, halo halo, iced mango juice (assuming this is a mango milkshake), sago milk tea

Homogeneous:

vinegar, salt solution, sugar syrup

abno ka hahaha hatdog hamburger

Answer:

You have to do this on a calculator. So when you put it in the calculator you will get 7.85x10^14.

3x10^8 is the speed of light. 3.82x10^-7 is the number in the question.

You can solve it like this

3x10^8

------------------        

3.82x10^7                  

But you would do this on a calculator.

Answer:

0.75 atm

Explanation:

To convert from mmHg to atm, divide the value by 760.

570/760=0.7500 atm

Oxygen and silicon are the elements found in silicon oxide compounds.

Silicon and oxygen, the two most usual chemical elements in the Earth's crust, combine as silicon dioxide to form the mineral silicon oxide. Quartz is the most plentiful mineral in the Earth's crust. Most of the minerals and other geological materials we see obtain from the crust, but some come from the uppermost part of the stole. In both places, oxygen and silicon are the ruling elements. Minerals can be classified by several different characteristics. The most common classification of minerals is found in chemical composition. Element is a substance that can't be broken down into simpler substances. An element is composed of atoms that have the same atomic number i.e. number of protons in its nucleus.

So we can conclude that Popular minerals are quartz, feldspar, gallium, cobalt, talc, and pyrite. Some minerals have another colored streak than their body

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Answer:

a

Explanation:

The correct answer is a) Henry's Law. This law states that the solubility of a gas in a liquid is directly proportional to the partial pressure of the gas in the overlying space.

This means that as the partial pressure of the gas increases, more gas molecules will dissolve in the liquid. Henry's Law is important in many areas of science, including chemistry, environmental science, and biology.

For example, it is used to understand the behavior of gases in the atmosphere and their impact on climate change, as well as the ability of aquatic organisms to obtain oxygen from water.

Henry's Law can also be applied to industrial processes such as gas purification and carbonation of beverages.

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Answer:

The chemical reaction between the citric acid and sodium bicarbonate

Explanation:

The limiting reactant in this reaction is the solid zinc because once it is consumed, the reaction will stop producing hydrogen gas. Since there is still solid zinc in the test tube, it means that all the hydrochloric acid has been consumed, and the reaction has stopped.

In this scenario, it is likely that the hydrochloric acid is the excess reactant and the zinc is the limiting reactant. This is because once all the zinc has reacted, there will be no more hydrogen gas produced and the reaction will stop, leaving unreacted zinc in the test tube.

The hydrochloric acid, on the other hand, will still be present in excess after the reaction has stopped. To confirm which substance is the limiting reactant, the student could calculate the theoretical yield of hydrogen gas based on the amount of each reactant used and compare it to the actual yield of hydrogen gas produced.

The reactant that produces the lower yield of hydrogen gas would be the limiting reactant.

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Answer:

For CH3Br, there are a total of 14 valence electrons. Hydrogen always goes on the outside, and since Carbon is less electronegative than Bromine, we'll put the Carbon in the center and the Bromine on top. We have 14 valence electrons for the CH3Br Lewis structure. Put two between atoms to form chemical bonds.

Explanation:

When NAD becomes NADH, it is being reduced and gaining chemical energy.

Nicotinamide adenine dinucleotide (NAD), a coenzyme, can exist in two forms, NAD⁺ (oxidized) and NADH (reduced form).

Electrons and protons released in catabolism reactions are attached to NAD⁺. The conversion of NAD⁺ to NADH is important reaction for production of ATP during the cellular respiration.

Reduction is lowering oxidation number because element, ion or compound gain electrons.

Chemical equation for reaction of reduction of NAD⁺ (see picture below):

NAD⁺ + 2e⁻ + H⁺ → NADH

Nicotinamide adenine dinucleotide (NAD) is made of two nucleosides joined by pyrophosphate.

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Answer:

Empirical formula is NH₃

Explanation:

Given data:

Percentage of hydrogen = 82%

Percentage of nitrogen  = 18%

Empirical formula = ?

Solution:

Number of gram atoms of H = 18 / 1.01 = 17.8

Number of gram atoms of N  = 82 / 14  = 5 .9

Atomic ratio:

                  H               :         N

              17.8/5.9        :        5.9/5.9

                  3               :        1

H : N = 3:1

Empirical formula is NH₃

The reaction is included in a redox reaction

Further explanation:

Given

Reaction

2 Ca + O₂ → 2 CaO

Required

a redox reaction

Solution

Redox reactions are reactions where there is a change in oxidation number

Oxidation is an increase/increase in oxidation number, while reduction is a decrease/decrease in oxidation number.

Reducing agents are substances that experience oxidation  and oxidizing agent are substances that experience reduction

in the above reaction is included in a redox reaction because there is a change in oxidation number

Ca⇒Ca²⁺+ 2e⁻(for balanced equation : 2Ca⇒2Ca²⁺+4e⁻)

Oxidation ( 0 to +2)

O₂+2e⁻⇒O²⁻(for balanced equation : O₂+4e⁻⇒2O²⁻)

Reduction (0 to -2)

5.20 g / 40.00 g = 0.130 moles NaOH

molarity = moles of solute / liters of solution

M = 0.130 moles / 0.500 L

M = 0.260

b) 0.260 M

The molarity of the solution is 0.260M

Molarity is the moles of a solute per litres of a solution. Molarity is also known as the molar concentration of a solution. It is denoted by M.

Solution is a homogeneous mixture composed of two or more substances.

Molarity = Moles of solute / litres of solution

5.20g / 40.00g/mol = 0.130 moles NaOH

M = 0.130 moles / 0.500L

M = 0.260M

Hence, option 2 is the answer.

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Answer:

225.6 kJ, assuming the water is already at 100 °C

Explanation:

The correct answer to this question will depend on the initial temperature of the water to which heat is added to produce steam.  Energy is required to raise the water temperature to 100°C.  At that point, an energy of vaporization is needed to convert liquid water at 100 °C to water vapor at 100°C.  The heat of vaporization for water is 2256.4 kJ/kg.  The energy required to bring 100g of water from a lower temperature to 100°C is calculated at 4.186 J/g°C.  We don't know the starting temperature, so this step cannot be calculated.

Assuming that we are already at 100 °C, we can calculate the heat required for vaporization:

(100.0g)(1000.0g/1 kg)(2256.4 kJ/kg) = 225.6 kJ for 100 grams water.

Answer:

new substances

Explanation:

Atoms of different elements can combine to make new substances. A molecule is formed when two or more atoms join together chemically. If atoms combine that are of two or more different elements, we call that a compound. All compounds are molecules, but not all molecules are compounds.

The molar solubility of Na3PO4 in a saturated solution where [Na+] = 0.30 M is 1.0 x 10^-26 M.

The molar solubility of Na3PO4 can be determined using the solubility product constant (Ksp) expression for the dissociation reaction of Na3PO4:
Na3PO4(s) ⇌ 3Na+(aq) + PO43-(aq)
Ksp = [Na+]^3[PO43-]
Since the solution is saturated, the concentration of Na+ is given as 0.30 M. Therefore, we can substitute this value into the Ksp expression and solve for the molar solubility (x) of Na3PO4:
Ksp = (0.30 M)^3 (x)
Simplifying the expression, we get:
Ksp = 0.027x
Rearranging the equation, we can solve for x:
x = Ksp / 0.027
The value of Ksp for Na3PO4 is 2.7 x 10^-28 (at 25°C), so substituting this value into the equation gives:
x = (2.7 x 10^-28) / 0.027
x = 1.0 x 10^-26 M
Therefore, the molar solubility of Na3PO4 in a saturated solution where [Na+] = 0.30 M is 1.0 x 10^-26 M.

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