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3 years ago

magnesium reacts with hydrochloric acid to produce magnesium chloride and hydrogen gas the reactants in this reaction are

Chemistry

1 answer:

Maru [420]3 years ago

5 0

Reactants in this reaction is Magnesium (Mg) and Hydrochloric acid (HCl)...

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A weather balloon is filled with helium that occupies a volume of 500 L at 0.995 atm and 32.0 ℃. After it is released, it rises

Yuki888 [10]

Answer : The volume of the balloon at the new location is, 591.3 L

Explanation :

Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.

The combined gas equation is,

$\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}$

where,

$P_1$ = initial pressure of gas = 0.995 atm

$P_2$ = final pressure of gas = 0.720 atm

$V_1$ = initial volume of gas = 500 L

$V_2$ = final volume of gas = ?

$T_1$ = initial temperature of gas = $32.0^oC=273+32=305K$

$T_2$ = final temperature of gas = $-12^oC=273+(-12)=261K$

Now put all the given values in the above equation, we get:

$\frac{0.995atm\times 500L}{305K}=\frac{0.720atm\times V_2}{261K}$

$V_2=591.3L$

Therefore, the volume of the balloon at the new location is, 591.3 L

3 0

4 years ago

a sample of tetrachloroethylene, a liquid used in dry cleaning that is being phased out because of its potential to cause cancer

Darina [25.2K]

The density of the liquid at the given temperature is 1.622 g/mL

<h3>What is density? </h3>

The density of a substance is simply defined as the mass of the subtance per unit volume of the substance. Mathematically, it can be expressed as

Density = mass / volume

<h3>How to determine the density </h3>

The density of the liquid can be obtained as illustrated below:

Mass of liquid = 40.55 g
Volume of liquid = 25 mL
Density of liquid =?

Density = mass / volume

Density = 40.55 / 25

Density of liquid = 1.622 g/mL

Learn more about density:

brainly.com/question/952755

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4 0

2 years ago

Is the dissolving of copper (ii) chloride in water a chemical change or a physical change why?

bija089 [108]

It would be a chemical change because the chloride water would have an effect on the copper. A way to tell if something is a chemical or physical change is that chemical change is not reversible. Physical change can be reversed. For example, water can be physically changed into ice, and it can go back into water. Hope this helps!

4 0

3 years ago

What is the ph of a 0.15 m solution of ammonium chloride?

Thepotemich [5.8K]

Best Answer: <span>(a)
8.9 x 10^-7 = x^2 / 0.15-x
x = [OH-] = 0.00037 M
pOH = 3.4
pH = 14 - 3.4 = 10.6

(b)
Ka = Kw/Kb = 5.6 x 10^-10 = x^2 / 0.20-x
x = [H+] = 0.000011 M
pH = 5.0</span>

7 0

3 years ago

When you produce a current/electron flow through a copper wire with a generator; the wire itself carrying the current (electron

amm1812

True is the right answer

5 0

3 years ago