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professor190 [17]
4 years ago
8

A Cobalt (Co) atom has a mass number of 60. Its atomic number is 27. How many neutrons does the cobalt atom have?

Chemistry
1 answer:
Roman55 [17]4 years ago
6 0

Answer:

33 Neutrons

Explanation:

Atomic Mass = # of Protons + # of Neutrons

Atomic Number = Proton count

Atomic Mass of Co = 27 Protons + x Neutrons

60 = 27 + x

x = 33

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If you have 3.50 moles of hydrogen and 5.00 moles of nitrogen to produce ammonia, which element is the reactant in excess? 3H2 +
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Answer:

nitrogen

Explanation:

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3 0
3 years ago
Sulfuric acid (H2SO4) has a molar mass of 98.1 g/mol. How many oxygen atoms are found in 75.0 g of H2SO4? A. 1.15 × 10^23 B. 1.8
Margarita [4]

Answer:

B

Explanation:

first find the no. Of moles of H2SO4

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Next step

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next multiply avogadros constant

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3 0
4 years ago
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