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Over [174]
3 years ago
13

32 g of a metal, M, reacts with 8 g of oxygen to form an oxide. The formula of the oxide is MO. What is the atomic mass of M in

g mol-?
​
Chemistry
1 answer:
schepotkina [342]3 years ago
7 0

Answer: M= 128 g/mol (Te is quite close)

Explanation: number of Oxygen moles is n = 8 g / 32 g/mol = 0,25 mol.

Because formula of oxide is MO, thus amount of metal is also 0,25 mol.

Because n = m/M , Molar mass of the metal M = m/n = 32 g /0.25 mol = 128 g/ mol

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How many grams of nickel are in 1.57 moles of nickel
Crank
Question: <span>How many grams of Nickel are in 1.57 moles of nickel

There are 58.6934 grams of Nickel in 1 mole. 

There are 92.1486 grams of Nickel in 1.57 moles.

Nickle is the most common ore to find on Earth. The atomic number of Nickle is 28 and the symbol for Nickle is Ni. The color is silvery-white with a tinge of gold.

Final Answer:
</span>
There are 92.1486 grams of Nickel in 1.57 moles.
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On a plateau on a heating curve, _____.
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On a Plateu on a heating curve phase changes are occuring

Explanation:

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which has a lower freeging point oxgyen or ethanol

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-(x+23)=34 find x<br>-(2-3)+(2+3)<br>​
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3 years ago
A 50.6 grams sample of magnesium hydroxide (Mg(OH)2) is reacted with 45.0 grams of hydrochloric acid (HCl). What is the theoreti
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            <span> Mg(OH)2(s) + 2HCl(aq) yield MgCl2(aq) + 2H2O(l)

grams HCl required = (50.6 grams Mg(OH)2) * (1 mol Mg(OH)2 / 58.3197 grams Mg(OH)2) * (2 mol HCl / 1 mol Mg(OH)2) * (36.453 grams HCl / 1 mol HCl) = 63.26 grams HCl required

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theoretical yield MgCl2 = (45.0 grams HCl) * (1 mol HCl / 36.453 grams HCl) * (1 mol MgCl2 / 2 mol HCl) * (95.211 grams MgCl2 / 1 mol MgCl2) = 58.6 grams MgCl2 </span>
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