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ra1l [238]
3 years ago
14

HEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEELLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP MEEEEEEEEEEEEEEEE

EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
ty its science

Chemistry
2 answers:
jonny [76]3 years ago
8 0
C hhbhhhbbbbbbbbbbbbbbb
Ghella [55]3 years ago
4 0

Answer:

I would say C

Explanation: Hope this helped

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The diameter of an atom is 300 pm. How many times larger is an atom than the longest wavelength of a gamma ray?
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The gamma ray is in science i guess try to look it up on google or something
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3 years ago
Na2S+2AgNO3 = Ag2S + NaNO3 If 2.86g of Ag2S are actually produced by a reaction between an excess of Na2S and 4.27g of AgNO3 the
Advocard [28]

Answer:

D. 91.0%

Explanation:

Hello,

In this case, for the given chemical reaction:

Na_2S+2AgNO_3 \rightarrow Ag_2S + 2NaNO_3

Next, since silver nitrate (molar mass 169.87 g/mol) is in a 2:1 molar ratio with silver sulfide (molar mass 247.8 g/mol), we compute its theoretical yield as shown below:

m_{Ag_2S}^{theoretical}=4.27gAgNO_3*\frac{1molAgNO_3}{169.87gAgNO_3} *\frac{1molAg_2S}{2molAgNO_3}*\frac{247.8gAg_2S}{1molAg_2S}\\\\m_{Ag_2S}^{theoretical}=3.11gAg_2S

Next, we compute the percent yield as:

Y=\frac{m_{Ag_2S}^{actual}}{m_{Ag_2S}^{theoretical}}*100\% =\frac{2.86g}{3.11g} *100\%\\\\Y=91.0%

Hence, answer is D. 91.0%.

Best regards.

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4 years ago
Which of the following are forms that chemical hazards can be in?
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Is mixing acid and base a chemical change or a physical change
gladu [14]

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7 0
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Correct answer. 9. The mass number of an element is the number of? ​
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