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lutik1710 [3]
3 years ago
5

The chemical standard for the quantity of a mole is based on which substance? a.hydrogen-1 b.helium-2 c.oxygen-16 d.carbon-12

Chemistry
1 answer:
jekas [21]3 years ago
5 0
D.carbon-12 is the answer.......
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The diameter of carbon atom is.000000000154m. What is this expressed in scientific notation.
Margarita [4]

1.54 x 10^-10

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3 years ago
A. If both Assertion & Reason are true and the reason is the correct explanation of the assertion. B. If both Assertion &amp
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Answer:

C. If Assertion is true statement but Reason is false.

Explanation:

The burning of magnesium in air produces magnesium oxide as shown by the equation;

2Mg(s) + O2(g) -----> 2MgO(s)

The magnesium oxide solid is recovered as a white ash. This is a typical example of an oxidation reaction which is also a combustion reaction.

The reason has nothing at all to do with the assertion hence the answer given.

Magnesium oxide is basic just like the oxides of other metals and dissolves in water to yield an alkali.

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If an object is travelling 25.0 meters/second, how far will it travel in 45 minutes?
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  • Speed=25m/s
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\\ \rm\longmapsto Distance=Speed(Time)

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4 0
2 years ago
Ms. Clark added a spoonful of baking soda and then poured a little vinegar into the cup. We observed fizzing and bubbling. Based
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Answer:

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Which statement describes how technology has increased our information on Mars?
Luden [163]

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3 years ago
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