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Tanzania [10]
3 years ago
12

Here’s another one guys please help.

Chemistry
1 answer:
ch4aika [34]3 years ago
3 0

Answer:

Explanation:

i think B im not sure

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What is the volume of HCl gas required to react with excess magnesium metal to produce 6.82 L of hydrogen gas at 2.19 atm and 35
prohojiy [21]

Answer:

Explanation:

2 HCl(g) + Mg(s) → MgCl₂(s) + H₂(g)

Let's calculate the quantity of mole of produced hydrogen with the Ideal Gases Law

P . V = n . R .T

2.19 atm . 6.82L = n . 0.082 . 308K

(2.19 atm . 6.82L) / (0.082 . 308K) = n

0.591 mol = n

1 mol of H₂ gas came from 2 mol of hydrochloric, so, 0.591 mol came from the double of mole

0.591 .2 = 1.182 mole of acid.

Molar mass of HCl = 36.45 g/m

1.182 mole are (36.45 g/m . 1.182g ) contained in 43.1 g

Density HCl = HCl mass / HCl volume

0,118 g/mL = 43.1 g / HCl volume

43.1 g / 0.118 g/mL = 365.3 mL (HCl volume)

5 0
3 years ago
How many different types of elements are there in acetone C3H6O?
Ymorist [56]

Answer:

3

Explanation:

5 0
3 years ago
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If a chemist has 2.3 moles of arsenic that has a molar mass of 74.92g/mol, which would be the best way to find out how many atom
scZoUnD [109]
Mulitply 2.3 by avogadros #
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3 years ago
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A 1500 kg race car accelerates at a rate of about 9M /s2 as to how much force does the engine need to create for this to happen
IgorC [24]

Answer:

13500 N

Explanation:

According to newtons second law of motion

mass m =1500 Kg

a = 9m/s^2

Force F = mass m × acceleration a

F = 1500×9= 13500 N

7 0
2 years ago
Can someone explain how to do this, I don't understand?
solniwko [45]

Answer:

a) 2

b) 3

c) 5

d) 6

Explanation:

7 0
3 years ago
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