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ArbitrLikvidat [17]
3 years ago
7

Which of the following is true about elements?

Chemistry
1 answer:
kondor19780726 [428]3 years ago
6 0

Answer:

The first one

Explanation:

Elements are as simple as it gets

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A volume measured by a graduated cylinder that was marked in 100 mL
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The volume measured using such a cylinder will be reported to the nearest 10th mL.

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10 mL graduated cylinders are always read to the nearest two decimal places.

100 mL graduated cylinders are always read to the nearest 1 decimal place. The nearest 1 decimal place is the same thing as the nearest 10th.

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2 years ago
An aqueous solution of HNO2 is poured onto a solid pile of SrCO3. Identify the net ionic equation for this reaction.
Eddi Din [679]

Answer:

D) SrCO3(s) + 2 HNO2(aq) → Sr(NO2)2 + H2O + CO2(g)

Explanation:

When an acid react with carbonate, it produces nitrate, carbon-dioxide gas and water molecule. When nitrous acid react with Strontium carbonate, three products are formed i. e. Strontium nitrate, carbon-dioxide gas and water. In the reaction, both nitrous acid and Strontium carbonate exchange their partners with each other and forming a different products.

6 0
3 years ago
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