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DedPeter [7]
2 years ago
13

Find the element. Plz help!

Chemistry
1 answer:
Hunter-Best [27]2 years ago
4 0

Answer:

Hydrogen.

Explanation:

We see in the nucleus that we have 1 proton and 1 neutron.

The number of protons in the nucleus determines which element it is.

Element with 1 proton is the 1st element on the Periodic Table, Hydrogen.

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If 200 g of water is heated from 20 C to 40 C, then what is the heat added in kilocalories (same as food calories)?
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Answer: 4Kcal

Explanation:

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C= 1 cal/g/°c

Ø= 40-20=20°c

H= 200*1*20= 4000calories= 4Kcal

8 0
2 years ago
What titrant will be used to titrate the 0. 02 m hcl phenol red solution?
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The NaOH will be used What titrant  to titrate the 0. 02 m hcl phenol red solution.

Acid-base titrations may be the most typical titrations, although there are numerous more forms as well. Take a look at this illustration where sodium hydroxide is used to titrate a sample of hydrochloric acid (HCl) (NaOH). The titrant (NaOH), which is added gradually throughout the duration of the titration, has been added to the unknown solution.

Titrants are solutions with known concentrations that are added to solutions whose concentrations must be determined. The solution for whom the concentration needs to be determined is known as a titrant as well as analyte.

Therefore, the NaOH will be used as a titrant to titrate the 0. 02 m hcl phenol red solution.

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brainly.com/question/21504465

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7 0
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