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Talja [164]
3 years ago
12

Mass of sodium + nitrogen +oxygen+ oxygen+ oxygen =

Chemistry
2 answers:
Mazyrski [523]3 years ago
8 0

<u>Answer:</u>

<em>Mass of sodium + nitrogen +oxygen+ oxygen+ oxygen = =85 g/mol </em>

<em></em>

<u>Explanation:</u>

Molar mass is the mass of 1 mole of the substance and its unit is g/mol

We find the molar mass by just adding atomic mass of the elements present in the chemical formula of the compound

For example  

H_2 SO_4

Atomic mass of H is 1.008 (approximately 1)

Atomic mass of S is 32

Atomic mass of O is 16

There are 2, H atoms 1, S atom and 4, O atoms

So, the molar mass of the compound H_2 SO_4 will be

\\$=[(2 \times 1)+(1 \times 32)+(4 \times 16)]$\\\\$=(2+32+64)=98 \frac{g}{m o l}$

The question says 1, Na  

1, N and  

3, O

So the chemical formula we get is NaNO_3

The molar mass of the compound NaNO_3 is

\\$=[(1 \times 23)+(1 \times 14)+(3 \times 16)]$\\\\$=(23+14+48)$

=85 g/mol (Answer)

Vaselesa [24]3 years ago
5 0

Answer:

Oxygen's atomic weight is 16.00 amu. 1 mole of oxygen is 6.02 x 1023 atoms of oxygen 1 amu = 1.661 x 10-24g What is the molar mass (g/mole) of oxygen? Molar mass (in grams) is always equal to the atomic weight of the atom!

Explanation:

i looked it up ok

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a chemist dissolves 0.564 moles of manganese (IV) oxide (MnO2) in water, and adds enough water to make 0.510 L of solution. Calc
ladessa [460]

Answer:

The molarity of the solution is 1.1 \frac{moles}{liter}

Explanation:

Molarity is a measure of the concentration of that substance that is defined as the number of moles of solute divided by the volume of the solution.

The molarity of a solution is calculated by dividing the moles of the solute by the volume of the solution:

molarity=\frac{number of moles of solute}{volume}

Molarity is expressed in units \frac{moles}{liter}

In this case

  • number of moles of solute= 0.564 moles
  • volume= 0.510 L

Replacing:

molarity=\frac{0.564 moles}{0.510 L}

Solving:

molarity= 1.1 \frac{moles}{liter}

<u><em>The molarity of the solution is 1.1 </em></u>\frac{moles}{liter}<u><em></em></u>

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2 years ago
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Which is a reason that a chemical engineer would use a rate law for a reaction in a chemical plant?
Harrizon [31]
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pishuonlain [190]

Answer:

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Explanation:

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Nutka1998 [239]

Explanation:

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