3 years ago

Help please!!?!!??!!

Chemistry

1 answer:

Minchanka [31]3 years ago

8 0

Answer:

65.38 u

Explanation:

Change each percent abundance into decimal form (by dividing by 100) then multiply each by the atomic mass of it's isotope. Add together each isotope to get the average atomic mass of the element.

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PLEASE PLEASE please please help with Chemistry!!!!!

AysviL [449]

OH-= 9.77*10^-3, H3O= (1* 10^-14) (9.77*10^-3)= 7.00

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3 years ago

What is the formula for a compound containing one atom of sodium, one atom of oxygen, and one atom of hydrogen?

shusha [124]

Answer:

NaOH

Explanation:

Looking at a periodic table, sodium is Na, oxygen is O and hydrogen is H

If we have a compound containing 1 atom of sodium (Na), 1 atom of oxygen(O) and 1 atom of hydrogen(H) the formula would be NaOH

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A car is traveling 71.4 kilometers per hour. What is its speed in miles per minute? One kilometer = 0.62 miles.

Nimfa-mama [501]

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What is the volume (L) occupied by a mole of an ideal gas,

irina [24]

Answer:

29.2 L

Explanation:

Given data

Moles (n): 1 mol

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$626mmHg.\frac{1atm}{760 mmHg} =0.824atm$

Temperature (T): 293 K

We can find the volume of the gas (V) of the using the ideal gas equation.

P × V = n × R × T

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V = 29.2 L

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3 years ago