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3 years ago

10

Find the answer for question c

1 answer:

kipiarov [429]3 years ago

8 0

Phosphorus pentoxide react with sodium hydroxide

P4O10 + 12NaOH → 4Na3PO4 + 6H2O

The salt so formed is called sodium phosphate or trisodium phosphate.

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Mg3N2(s)+6H2O(l)→3Mg(OH)2(s)+2NH3(g) When 36.0 g of H2O react, how many grams of NH3 are produced? When 36.0 g of H2O react, how

Afina-wow [57]

Answer:

11.3 g of $NH_{3}$ are produced from 36.0 g of $H_{2}O$

Explanation:

1. The balanced chemical equation is the following:

$Mg_{3}N_{2}(s)+6H_{2}O(l)=3Mg(OH)_{2}(s)+2NH_{3}(g)$

2. Use the molar mass of the $H_{2}O$ , the molar mass of the $NH_{3}$ and the stoichiometry of the balanced chemical reaction to find how many grams of $NH_{3}$ are produced:

Molar mass $H_{2}O$ = 18 $\frac{g}{mol}$

Molar mass $NH_{3}$ = 17 $\frac{g}{mol}$

$36.0gH_{2}O*\frac{1molH_{2}O}{18gH_{2}O}*\frac{2molesNH_{3}}{6molesH_{2}O}*\frac{17gNH_{3}}{1molNH_{3}}=11.3gNH_{3}$

Therefore 11.3 g of $NH_{3}$ are produced from 36.0 g of $H_{2}O$

3 0

2 years ago

A certain protein was found to contain 0.292% manganese by mass. Determine the minimum molecular mass of the protein.

Lisa [10]

$55u \ \ \ \ \ \ \Rightarrow \ \ \ \ \ 0,292\%\\
x \ \ \ \ \ \ \ \ \ \Rightarrow \ \ \ \ \ 100\%\\\\
x = \frac{55u*100\%}{0,292\%}\approx18835,62u$

4 0

3 years ago

Which sample has more atoms in it? 150.0 g of gold or 10.0 g of lithium.

Deffense [45]

Answer:150g of gold

Explanation: There is a lot more gold and gold is significantly significantly more dense than lithium

6 0

3 years ago

Predict how maritime air masses would change if the ocean froze

MrRissso [65]

Air moves from

high(pressure)the regions at the

poles(d0)

3 0

2 years ago

I do not know the answer. Please help

BaLLatris [955]

I am sorry I don't know, points are points though

4 0

2 years ago