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oksano4ka [1.4K]
3 years ago
8

The number of O atoms in 2CaO is 1. true or false

Chemistry
2 answers:
lukranit [14]3 years ago
6 0
The 2 in the front means there’s 2 of Ca and 2 of O so false
stepan [7]3 years ago
5 0

Answer:

false

Explanation:

2CaO --> 2Ca + 2O

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299792458 m/s in scientific notation
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How many moles would there be in 500,000,000,000 atoms of silver? Show your calculation
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Explanation:

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Convert 63.3 kg to grams
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If you have 6.25g of O2, how many moles of H2O are produced?
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Answer:

0.4 moles of water produced by 6.25 g of oxygen.

Explanation:

Given data:

Mass of oxygen = 6.25 g

Moles of water produced = ?

Solution:

Chemical equation;

2H₂ + O₂  → 2H₂O

Number of moles of oxygen:

Number of moles = mass/ molar mass

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Now we will compare the moles of oxygen with water:

                    O₂          :          H₂O

                     1            :            2

                   0.2          :        2×0.2 = 0.4 mol

0.4 moles of water produced by 6.25 g of oxygen.

8 0
3 years ago
In three to five sentences, identify two components of the control subsystem of a vehicle, and use them
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