A substance is dissolved in water, where it breaks apart and releases H+ ions. 30% of the substance breaks apart. This substance is a...A.) strong acidB.) weak acidC.) weak baseD.) strong base

Answer:

1- d= m/v  d=540/200 d=2,7 g/cm

Explanation:

Answer:

BELOW

Explanation:

\(Density = \frac{Mass}{Volume}\\ \\D=?\\mass = 5.5g\\volume = 4.10\\\\D = \frac{5.5}{4.10} \\\\Density = 1.34\)

According to the problem the specific heat of the metal is 0.0329 cal/g°C.

Specific heat is the amount of heat energy required to raise the temperature of a unit mass of a substance by one degree. It is usually expressed in units of joules per kilogram-kelvin (J/kg-K). It is an important physical property of a substance that affects the rate of heat transfer.

The specific heat of a metal can be calculated using the equation, q = mcΔT,
where q is the amount of heat energy,
m is the mass of the metal sample,
c is the specific heat, and
ΔT is the change in temperature. In this problem, q = 10.57 g × c × (24.15ºC - 22.50ºC) = 2.85 g × c.
The amount of heat energy required to raise the temperature of the water bath can be calculated using the equation q = mcΔT,
where q is the amount of heat energy, m is the mass of the water bath,
c is the specific heat of water (4.184 J/g°C), and
ΔT is the change in temperature. In this problem, q = 104.0 g × 4.184 J/g°C × (24.15ºC - 22.50ºC) = 86.67 J.
The specific heat of the metal can be calculated by dividing the amount of heat energy required to raise the temperature of the metal sample by the amount of heat energy required to raise the temperature of the water bath. This gives us c = 2.85 g × c / 86.67 J = 0.0329 cal/g°C.
Therefore, the specific heat of the metal is 0.0329 cal/g°C.

To learn more about specific heat
https://brainly.com/question/27862577
#SPJ1

Answer:

A small amount of chemical splashes in Frank's eye. What should happen next? Frank should go to the eyewash station while his lab partner tells the teacher what happened.

Explanation:

Brainlist

Answer:

A) Fission

Explanation:

Fission is the splitting of a heavy, unstable nucleus into two lighter nuclei, and fusion is the process where two light nuclei combine together releasing vast amounts of energy.

Answer:

C

Explanation:

Check it. So u can know it

Answer:

I hope this helps you

.......................................

Answer:

Deeper water, where too little sunlight penetrates for photosynthesis, is called the aphotic zone. Surface water dissolves oxygen from the air, so there is generally plenty of oxygen in the photic zone to support organisms. Water near shore usually contains more dissolved nutrients than water farther from the shore

Explanation:

Answer:

3.7939491450000004e+23

Explanation:

The pressure inside the tire is approximately 1.970796 newtons per square centimeter (N/cm²) when measured in those units.

To convert the pressure from pounds per square inch (psi) to newtons per square centimeter (N/cm²), we need to use the conversion factors between these units.

First, let's convert pounds to newtons:

1 pound = 0.45359237 kilograms

1 kilogram = 9.80665 newtons

Next, let's convert square inches to square centimeters:

1 square inch = 6.4516 square centimeters

Now, we can perform the conversion:

1 psi = (0.45359237 kg) × (9.80665 N/kg) / (6.4516 cm²)

≈ 0.070307 N/cm²

Therefore, the pressure inside the tire of 28.0 psi is approximately equal to 28.0 × 0.070307 N/cm², which is approximately 1.970796 N/cm².

For more question on pressure

https://brainly.com/question/28012687

#SPJ8

For any reaction to takes place, Reaction should attain low energy as it moves forward.

We know that, Reactivity of any substance is inversely proportional to the stability of the substance.

When the products formed from the reactant that has lower energy i.e. higher stability than the reactants.

The energy difference between the energy of reactant and that of the product, can also be predicted by using the VBT i.e. Valence Bond Theory, Atomic Orbital Theory, and MOT i.e. Molecular Orbital Theory.

There are four major factors that can affect the reactivity of metals:

From periodic table too, we can determine the reactivity of elements as  the elements in the bottom left corner of the periodic table are the metals that are most reactive in periodic table.

To know more about Reactivity:

brainly.com/question/1598581

#SPJ4

The amount of heat required to vaporize 181.20 g of ethanol would be 170.1 kJ.

Using the formula:

Q = n ∆Hvap

where:

Moles of 181.20 g of ethanol = 181.20 g / 46.07 g/mol = 3.933 mol

Substituting the values:

Q = 3.933 mol x 43.3 kJ/mol = 170.1 kJ

In other words, the amount of heat required to vaporize 181.20 g of ethanol is 170.1 kJ.

More on heat of vaporization can be found here: https://brainly.com/question/30603212

#SPJ1

Answer:

ZH² + O² = ZH²O I think this may help you I don't really know how to explain

Answer:

 the total gas pressure after one half-life is 4.38 atm

Explanation:

The balanced equation for the decomposition of N2O to N2 and O2 is given as:

2N₂O(gas) ⇒ 2N₂(gas) + O₂(gas)

2 moles of N₂O produce 2 moles of N₂ and 1 mole of O₂

The change in pressure depends on the coefficient (number of moles) of the reactant and product.

                                                          N₂O                    N₂                     O₂

number of moles                                2                        2                        1

Initial pressure (atm)                           3.50                  0                        0

change in pressure                            -2x                    +2x                      x

Final pressure (atm)                            3.50 - 2x           2x                       x

The total final pressure is the sum of the individual total pressure. i.e.:

Total final pressure = final pressure of N₂O + final pressure of N₂ + final pressure of O₂

Total final pressure = (3.5 - 2x) + (2x) + x

Total final pressure = 3.5 + x

After one half life, the initial pressure of N₂O would be half its value.

Final pressure of N₂O = half of the initial pressure of N₂O

3.5 - 2x = 0.5(3.5)

3.5 - 2x = 1.75

2x = 1.75

x = 0.875 atm

Therefore, Total final pressure = 3.5 + x = 3.5 + 0.875

Total final pressure = 4.38 atm to 3 significant figures

Answer: d. Arrangement of grains

Explanation:

Edge:)))

Answer:

To determine the change in mass of A over the given time period, we need to find the difference between the initial mass of A and the final mass of A.

From the given table, we can see that the initial mass of A at t = 0 (start time) is 12.4 g and the final mass of A at t = 60 minutes (end time) is 6.2 g.

Therefore, the change in mass of A over 60 minutes is:

Final mass of A - Initial mass of A

= 6.2 g - 12.4 g

= -6.2 g

The negative sign indicates that the mass of A decreased over time, which means that A underwent some kind of reaction or process that caused it to lose mass.

The change in mass of A over 60 minutes is -6.2 grams.

To determine the change in mass of A over 60 minutes, we need to compare the initial mass to the final mass.

From the given information, we can see that the mass of A decreases over time.

Let's calculate the change in mass.

Initial Mass of A: 12.4 g

Final Mass of A: 6.2 g

Change in Mass of A = Final Mass of A - Initial Mass of A

= 6.2 g - 12.4 g

= -6.2 g

The change in mass of A over 60 minutes is -6.2 grams.

Note that the negative sign indicates a decrease in mass.

For such more questions on mass

https://brainly.com/question/1838164

#SPJ8

Answer:

The chalcogens are the elements that belong to group 16 of the modern periodic table (or the oxygen family). Chalcogens consist of five elements – oxygen, sulfur, selenium, tellurium, and polonium.

The chalcogens (ore forming) are the chemical elements in group 16 of the periodic table. This group is also known as the oxygen family. Group 16 consists of the elements oxygen (O), sulfur (S), selenium (Se), tellurium (Te), and the radioactive elements polonium (Po) and livermorium (Lv).Explanation:

Answer: 212

Explanation:

Answer:

C is the Answer

Follow me please

Mark brainliest

Compounds are formed by the same or the different molecules of the elements. Iron has the lowest oxidation number in FeOH. Thus, option D is correct.

The oxidation number is the total gain or loss of the electrons by the atom to form a chemical bond with another atom in a molecule or a compound.

The oxidation state in a neutral compound adds up to zero. The oxidation number of oxygen is -2, and that of hydrogen a monoatomic ion is always +1.

Oxidation states are calculated as,

Fe(OH)₂:

X + 2 (-2 +1 ) = 0

X -2 = 0

X = +2

Fe(OH)₃:

X + 3 (-2 +1 ) = 0

X - 3 = 0

X = + 3

FeOH:

X -2 + 1  = 0

X - 1 = 0

X = +1

Therefore, iron has the lowest oxidation number in FeOH.

Learn more about oxidation numbers here:

https://brainly.com/question/3035498

#SPJ5

Answer:

H₂S + Cl₂ —> S + 2HCl

Explanation:

? + Cl₂ —> S + 2HCl

To balance the equation above, we must recognise what atoms are present in the products.

The products contains S, H and Cl.

Thus, S, H and Cl must also be present in the reactants.

Considering the equation given above, we can see clearly that H and S is missing in the reactants.

H and S together as a compound is expressed as H₂S.

Now, we shall input H₂S into the equation to obtain the complete equation. This is illustrated below:

? + Cl₂ —> S + 2HCl

H₂S + Cl₂ —> S + 2HCl

Next, we shall verify to see if the equation is balanced.

There are 2 atoms of H on both sides of the equation.

There are 2 atoms of Cl on both sides of the equation.

1 atom of S exist on both sides of the equation.

Thus, the equation is balanced.

Answer:brainly

Explanation:

absolutely brainly

full of help and knowledge

Hi, you have not provided structure of the aldehyde and alkoxide ion.

Therefore i'll show a mechanism corresponding to the proton transfer by considering a simple example.

Explanation: For an example, let's consider that proton transfer is taking place between a simple aldehyde e.g. acetaldehyde and a simple alkoxide base e.g. methoxide.

The hydrogen atom attached to the carbon atom adjacent to aldehyde group are most acidic. Hence they are removed by alkoxide preferably.

After removal of proton from aldehyde, a carbanion is generated. As it is a conjugated carbanion therefore the negative charge on carbon atom can conjugate through the carbonyl group to form an enolate which is another canonical form of the carbanion.

All the structures are shown below.

The statement that is a part of Kinetic Molecular Theory (KMT) is Molecules in a gas move rapidly. That is option B.

Kinetic Molecular Theory (KMT) is defined as the theory that describes the physical behaviour of gases.

The Kinetic Molecular Theory (KMT) include the following:

Therefore, the statement that is a part of Kinetic Molecular Theory (KMT) is Molecules in a gas move rapidly.

Learn more about gas here:

https://brainly.com/question/25649765

#SPJ1

ideal gas

PV=nRT

T = PV/nR

T = 1 x 12/9 x 0.08205

T = 16.25 K

\(\\ \rm\Rrightarrow Density=\dfrac{Mass}{Volume}\)

\(\\ \rm\Rrightarrow Volume=\dfrac{Mass}{Density}\)

\(\\ \rm\Rrightarrow Volume=\dfrac{0.19}{0.0076}\)

\(\\ \rm\Rrightarrow Volume=25cm³\)

\(\\ \rm\Rrightarrow Volume=25mL\)

Spectroscopy be used to distinguish between the following is the compound B has a peak at 3200 – 3500 cm⁻¹ in its IR spectrum.

Spectroscopy is the study of emission or absorption of light. It is used to study the structure of atoms and molecules.

The three types of spectroscopy are:

Thus, the correct option is B, the compound B has a peak at 3200 – 3500 cm⁻¹ in its IR spectrum.

Learn more about spectroscopy

https://brainly.com/question/5402430

#SPJ1

There are 0.84 moles of aluminum ions (Al3+) present in 0.42 mol of Al2(SO4)3.

To determine the number of moles of aluminum ions (Al3+) present in 0.42 mol of Al2(SO4)3, we need to consider the stoichiometry of the compound.

The formula of aluminum sulfate (Al2(SO4)3) indicates that for every 1 mole of the compound, there are 2 moles of aluminum ions (Al3+). This means that the mole ratio of Al3+ to Al2(SO4)3 is 2:1.

Given that we have 0.42 mol of Al2(SO4)3, we can calculate the moles of Al3+ as follows:

Moles of Al3+ = 0.42 mol Al2(SO4)3 x (2 mol Al3+ / 1 mol Al2(SO4)3)

Moles of Al3+ = 0.42 mol Al2(SO4)3 x 2

Moles of Al3+ = 0.84 mol Al3+

Therefore, there are 0.84 moles of aluminum ions (Al3+) present in 0.42 mol of Al2(SO4)3.

It's important to note that the stoichiometry of the compound determines the mole ratio between the different species involved in the chemical formula. In this case, the 2:1 ratio of Al3+ to Al2(SO4)3 allows us to determine the number of moles of Al3+ based on the given amount of Al2(SO4)3.

For more such question on aluminum visit:

https://brainly.com/question/30451292

#SPJ8

Answer:

Fluorine has a higher electronegativity than carbon

Explanation:

Electronegativity trend

-As you go from left to right across the periodic table, the electronegativity increases.

-As you go from top to bottom, the electronegativity decreases.

-We know that both carbon and fluorine are in the same energy level or period 2. However, Carbon is in group 14, which has 4 valence electrons, while fluorine is in group 17, which has 7 valence electrons. Therefore, fluorine has a higher electronegativity because fluorine is desperately wanted to gain 1 more valence electron to become stable (octet rule).