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Bezzdna [24]
2 years ago
11

Which statement is true about the Amazon rainforest? (Select all that apply.)

Chemistry
1 answer:
Rainbow [258]2 years ago
5 0

Answer:

b,c because I took the test

Explanation:

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How many grams of H3PO4 are in 300 mL of a .50 M solution of H3PO4
Liono4ka [1.6K]
The first thing you need to do is convert mL into L
so (175 mL)(.001L/1mL)=.175L then you multiply by the Molarity of H3PO4 which is 3.5mol/L so (.175L)(3.5mol/L)=.6125 mol H3PO4, and since it wants the answer in grams you then multiply (.6125molH3PO4) by the molar mass of H3P04 which is about 97.99g and your answer is 60.02g which is about 60 grams of H3PO4. Hope this helped
3 0
4 years ago
If the percent yield for the following reaction is 75.0%, and 25.0 g of NO₂ are consumed in the reaction, how many grams of nitr
victus00 [196]

Answer:

17.1195 grams of nitric acid are produced.

Explanation:

3NO_2+H_2O\rightarrow 2HNO_3+NO

Moles of nitrogen dioxide :

\frac{25.0 g}{56 g/mol}=0.5434 mol

According to reaction 3 moles of nitrogen dioxides gives 2 moles of nitric acid.

Then 0.5434 moles of nitrogen dioxides will give:

\frac{2}{3}\times 0.5434 mol=0.3623 mol of nitric acid.

Mass of 0.3623 moles of nitric acid :

0.3623 mol\times 63 g/mol=22.8260 g

Theoretical yield = 22.8260 g

Experimental yield = ?

\%Yield=\frac{\text{Experimental yield}}{\text{theoretical yield}}\times 100

75\%=\frac{\text{Experimental yield}}{22.8260 g}

Experimental yield of nitric acid = 17.1195 g

7 0
4 years ago
a nickel atom (atomic symbol Ni) has an atomic number of 28 and has an atomic mass of 59. how many neutrons does it have ??
shusha [124]

Answer: 31 neutrons

Explanation:

8 0
3 years ago
What does HHPS stand for?​
maw [93]

Answer:

it stands for Hazardous Household Products Symbols.

4 0
4 years ago
Why can you use a coin flips to represent sex combination that may occur In families?
zimovet [89]
I never heard of that actually
5 0
3 years ago
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