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Scilla [17]
2 years ago
6

Which substance produces hydroxide ions in solution?

Chemistry
1 answer:
Olegator [25]2 years ago
8 0

Answer:

An Arrhenius Base

Explanation:

The definition of this is a base that is a hydroxide ion donor.

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The chemical formula for strontium sulfite is SrSO3.<br><br><br> TRUE<br><br><br> FALSE
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Valency is the number of electrons lost or gained by an atom to attain an stable configuration. Valency is important when writing the formula of chemical compounds in chemistry. Strontium has a valency of  2 while sulfite ion (radicle) has a valency of 2. Therefore, the chemical formula of strontium sulfite is written as SrSO3.
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3 years ago
If I contain 3 moles of gas in a container with a volume of 60 liters and at a
viktelen [127]

Answer:    n = 3.0 moles

V = 60.0 L

T = 400 K

From PV = nRT, you can find P

P = nRT/V = (3.0 mol)(0.0821 L-atm/K-mol)(400 K)/60.0L

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3 years ago
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Methods scientist use to determine a change in physical or chemical change in an Item
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They'd observe any new substances or new color, and temp. that is irreversible. 

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8 0
3 years ago
Boron has two naturally-ocurring isotopes. Boron-10 has an abundance of 19.8% and actual mass of 10.013 amu, and boron-11 has an
aniked [119]

Answer:

Average atomic mass = 10.812 amu

Explanation:

The formula for the calculation of the average atomic mass is:

Average\ atomic\ mass=(\frac {\%\ of\ the\ first\ isotope}{100}\times {Mass\ of\ the\ first\ isotope})+(\frac {\%\ of\ the\ second\ isotope}{100}\times {Mass\ of\ the\ second\ isotope})

Given that:

<u>For first isotope, Boron-10: </u>

% = 19.8 %

Mass = 10.013 amu

<u>For second isotope, Boron-11: </u>

% = 80.2 %

Mass = 11.009 amu

Thus,  

Average\ atomic\ mass=\frac{19.8}{100}\times {10.013}+\frac{80.2}{100}\times {11.009}=1.982574+8.829218=10.811792

<u>Average atomic mass = 10.812 amu</u>

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2 years ago
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