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3 years ago

What does conserving mass mean in a chemical equation?

2 answers:

5 0

I have the same quiz! The answer is C. There is an equal number of each atom on the reactant and product side. I hope this helps! :)

Keith_Richards [23]3 years ago

4 0

The answer would be C. Hope this helps

You might be interested in

How are quantum numbers related to atomic orbitals?

sdas [7]

When considering atomic orbitals the only important information they really wanted to know is the size of the orbit, which was described by using quantum numbers.

3 0

3 years ago

A student is studying a sample of carbon dioxide gas inside a small syringe. At constant temperature the syringe has a volume of

Soloha48 [4]

The new pressure inside the syringe will be 1.25 atm

At constant temperatures, the volume of a gas is inversely proportional to its pressure.

Thus: P1V1 = P2V2

In this case, P1 = 3.0 atm, V1 = 89.6 mL, V2 = 215 mL

P2 = P1V1/V2

= 3 x 89.6/215

= 1.25 atm

More on gas laws can be found here: brainly.com/question/1190311

4 0

2 years ago

Robert has 4 grams of a substance and Jill has 10 grams of the same substance. Which of the following statements is true?

ELEN [110]

If Robert has 4 grams of a substance and Jill has 10 grams of the same substance <span>Jill's sample will weigh more than Robert's sample.</span>

5 0

3 years ago

Read 2 more answers

People take antacids, such as milk of magnesia, to reduce the discomfort of acid stomach or heartburn. The recommended dose of m

Llana [10]

Answer:

$V_{HCl}=0.208L=208mL$

Explanation:

Hello,

In this case, since the chemical reaction is:

$2HCl+Mg(OH)_2\rightarrow MgCl_2+2H_2O$

We can see that hydrochloric acid and magnesium hydroxide are in a 2:1 mole ratio, which means that the neutralization point, we can write:

$n_{HCl}=2*n_{Mg(OH)_2}$

In such a way, the moles of magnesium hydroxide (molar mass 58.3 g/mol) in 500 mg are:

$n_{Mg(OH)_2}=500mg*\frac{1g}{1000mg}*\frac{1mol}{58.3g} =0.00858mol$

Next, since the pH of hydrochloric acid is 1.25, the concentration of H⁺ as well as the acid (strong acid) is:

$[H^+]=[HCl]=10^{-pH}=10^{-1.25}=0.0562M$

Then, since the concentration and the volume define the moles, we can write:

$[HCl]*V_{HCl}=2*n_{Mg(OH)_2}$

Therefore, the neutralized volume turns out:

$V_{HCl}=\frac{2*0.00858mol}{0.0562\frac{mol}{L} }\\ \\V_{HCl}=0.208L=208mL$

Best regards.

3 0

3 years ago

When an object is lifted 10 feet off the ground, it gains a certain amount of potential energy. If the same object is lifted 30

Elden [556K]

Answer: 3 times as much the potential energy

Explanation:

Potential energy is the energy possessed by an object by virtue of its position.

$P.E=m\times g\times h$

m= mass of object

g = acceleration due to gravity

h = height of an object

When same object with same is lifted from 10 feet to 30 feet. The height has increased 3 times , thus the potential energy will also get 3 times as much.

4 0

3 years ago