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3 years ago

ASAP (2 questions & are iv the pic ) will get BRAINIEST

Chemistry

1 answer:

Zinaida [17]3 years ago

3 0

Answer:

Hey again!

Q1: 4 N

Q2: 24 N

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Calculate the mass of arsenic trihydride produced from 117.4 g of hydrogen gas with excess arsenic trioxide:

Lana71 [14]

Answer: The mass of $AsH_3$ produced is, 1528.8 grams.

Explanation : Given,

Mass of $H_2$ = 117.4 g

Molar mass of $H_2$ = 2 g/mol

First we have to calculate the moles of $H_2$ .

$\text{Moles of }H_2=\frac{\text{Given mass }H_2}{\text{Molar mass }H_2}$

$\text{Moles of }H_2=\frac{117.4g}{2g/mol}=58.7mol$

Now we have to calculate the moles of $AsH_3$

The balanced chemical equation is:

$6H_2+As_2O_3\rightarrow 2AsH_3+3H_2O$

From the reaction, we conclude that

As, 6 moles of $H_2$ react to give 2 moles of $AsH_3$

So, 58.7 moles of $H_2$ react to give $\frac{2}{6}\times 58.7=19.6$ mole of $AsH_3$

Now we have to calculate the mass of $AsH_3$

$\text{ Mass of }AsH_3=\text{ Moles of }AsH_3\times \text{ Molar mass of }AsH_3$

Molar mass of $AsH_3$ = 78 g/mole

$\text{ Mass of }AsH_3=(19.6moles)\times (78g/mole)=1528.8g$

Therefore, the mass of $AsH_3$ produced is, 1528.8 grams.

6 0

3 years ago

6th grade science i will give brainliest

Alexandra [31]

0.2 m/s! keep in mind, speed= distance divided by time :D

7 0

3 years ago

When two amino acids condense to form a dipeptide, what is the other product of the reaction? enter the molecular formula?

Viktor [21]

When amino acids are linked together, they form a peptide bond. When it joins two amino acids, it forms a dipeptide bond. When a long chain of amino acids are joined by peptide bonds, it becomes a protein. As shown in the picture, it loses H-OH molecules. So, it will appear in the product side as a H₂O molecule.

3 0

4 years ago

Help me pass this test my last day of school is may 26 if you don’t mind I have more questions :)

Paraphin [41]

Answer:

equal

Explanation:

4 0

3 years ago

Which of the following isotopes would most likely be unstable and therefore radioactive?

svlad2 [7]

Answer: Mercury-194 is an unstable isotope and hence is radioactive.

Explanation: Mercury-194 is an isotope of mercury, having formula $_{80}^{194}\textrm{Hg}$

Number of protons in this isotope = 80

Number of neutrons in this isotope = 114

This isotope is radioactive in nature and under decay process by Electron Capture.

Electron capture reactions are the reactions in which a proton in a nucleus absorbs an electron and convert it into neutron. The resulting nucleus will have a decreased atomic number and same atomic mass.

Reaction for electron capture of mercury-194 follows:

$_{80}^{194}\textrm{Hg}+_{-1}^0\textrm{e}\rightarrow _{79}^{194}\textrm{Au}$

6 0

3 years ago