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musickatia [10]
3 years ago
7

how many moles of ammonium chloride are required for a complete reaction with 420 mol of calcium hydroxide

Chemistry
1 answer:
Oxana [17]3 years ago
3 0

3 KOH + H3PO3 = K3PO4 + 3 H2O  

moles KOH = 26.5 g/56.1 g/mol=0.472  

moles K3PO4 = 0.472/3 =0.157

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A mixture of helium, nitrogen, and oxygen has a total pressure of 752 mm Hg. The
NISA [10]

Answer: The partial pressure of oxygen in the mixture is 321 mm Hg

Explanation:

According to Dalton's law, the total pressure is the sum of individual pressures.

p_{total}=p_{He}+p_{N_2}+p_{O_2}

Given : p_{total} = total pressure of gases = 752 mm Hg

p_{He} = partial pressure of Helium = 234 mm Hg

p_{N_2} = partial pressure of nitrogen = 197 mm Hg

p_{O_2} = partial pressure of oxygen = ?

Putting in the values we get:

752mmHg=234mmHg+197mmHg+p_{O_2}

p_{O_2}=321mmHg

The partial pressure of oxygen in the mixture is 321 mm Hg

5 0
3 years ago
5.36 litars of nitrogen gas are at :25°C and 733 mm Hg
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Answer:

4.6L

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Use the equation (P1*V1)/(T1)=(P2*V2)/(T2)

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(733mmHg * 5.36L)/(298K)=(1140mmHg * V)/(402K)

V= 4.6 or 4.65L (depending on sig figs)

6 0
3 years ago
What product is formed when 1-bromopropane reacts with ch3o−?
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2 years ago
How many atoms are present in 179.0 g of iridium?<br> include units please:)!
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Answer:

179.0 g of iridium (1 mol / 192.217 g) ( 6.022 x 10^23 atoms /  1 mol ) = 5.61 x 10^23 atoms of iridium

Explanation:

5 0
3 years ago
Read 2 more answers
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