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Margaret [11]
3 years ago
13

Calculate the [OH−] value with [H3O+]=3.0×10−9M.

Chemistry
1 answer:
saw5 [17]3 years ago
4 0
Yessssssssdddssssssss

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Fill in the coefficients that will balance the following reaction:
bulgar [2K]

2Ca + 2CO2 + O2 → 2CaCO3

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2 years ago
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Nitric oxide (NO) reacts with oxygen gas to produce nitrogen dioxide. A gaseous mixture contains 0.66 g of nitric oxide and 0.58
tigry1 [53]

Answer:

NO is the limiting reagent.  

In this reaction 0.886 mole of NO2 is produced

Explanation:

The chemical equation for this reaction is  

2NO(g) + O2(g) → 2NO2(g)

In this limiting reagent reaction, 2 moles of NO reacts with one mole of O2  to produce 2 mole of 2NO2

0.886 mole of NO * (2 mole of NO2/2 mole of NO) = 0.886 mole of NO2

0.503 mole of O2 * (1 mole of NO2/1 mole of O2) = 1.01 mole of NO2

Hence, NO is the limiting reagent.  

In this reaction 0.886 mole of NO2 is produced

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3 years ago
Match the scientist to his contribution to the atomic theory - Thomson - Rutherford - Bohr A. Electron energy levels B. Nucleus
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Answer: Thomson - C

Rutherford - B

Bohr - A

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6 0
3 years ago
3) <br> Which subatomic particle is NOT found at the center of the atom?
erik [133]

Answer:

electrons

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protons and neutrons are found in the nucleus while electrons circle around the nucleus

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Which statement best describes the process that the diagrams show?
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B. This looks like ice turning to water then to steam

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