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garik1379 [7]
3 years ago
12

How many oxygen atoms are in one molecule of baking soda

Chemistry
1 answer:
8_murik_8 [283]3 years ago
4 0

NaHCO3 = No. of atoms are 1 sodium + 1 Hydrogen + 1 carbon + 3 oxygens = 6 atoms per molecule.

so a total of 3 oxygens

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To solve this problem, we should recall that the change in enthalpy is calculated by subtracting the total enthalpy of the reactants from the total enthalpy of the products:

ΔH = Total H of products – Total H of reactants

You did not insert the table in this problem, therefore I will find other sources to find for the enthalpies of each compound.

ΔHf CO2 (g) = -393.5 kJ/mol

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ΔHf Fe2O3 (s) = -822.1 kJ/mol

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Since the given enthalpies are still in kJ/mol, we have to multiply that with the number of moles in the formula. Therefore solving for ΔH:

ΔH = [<span>3 mol </span><span>( − </span><span>393.5 </span>kJ/mol<span>) + 1 mol (</span>0.0 kJ/mol)<span>] − [</span><span>3 mol </span><span>( − </span><span>110.5 </span>kJ/mol<span>) + </span><span>2 mol </span><span>( − </span><span>822.1 </span>kJ/mol<span>)]</span>

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3 years ago
Which of the following statements about matter is false?
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If body fats has a density of 0.94 g/mL and 3.0 liters of fat are removed, how many pounds of fat were removed from the patient?
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Answer:

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Explanation:

We are given;

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We need to know that;

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Therefore;

Mass = 2,820 g ÷ 453.592 g per pound

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