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Varvara68 [4.7K]
3 years ago
6

How many total atoms are in 3.3 moles of potassium sulfide, K2S?

Chemistry
1 answer:
marissa [1.9K]3 years ago
3 0
The answer is 363.99 g
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In science, what models are usually the best? A: Simple B: Complex C: Alphabetical D: Mathematical
Flura [38]
A) simple.

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3 years ago
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Solve the question that follows using the equation for the conversion of Celsius to Fahrenheit. F=95(C)+32 On February 9, 1934,
ahrayia [7]

Answer:

Buffalo, NY was colder on February 9, 1934

Explanation:

Temperature is the measure of thermal energy present in a given substance. It is a physical property of a matter which can be measured on the Celsius scale (°C), Fahrenheit scale (°F), and Kelvin scale (K).

<u>To convert Celsius (°C) to Fahrenheit (°F), we use the equation:</u>

°F = 9/5 (°C) + 32

Given: On February 9, 1934,

Temperature in Buffalo, NY: T₁ = (- 29) °C

Temperature in Anchorage, AL: T₂ = 19 °F

<u>To convert T₁ from °C to °F:</u>

9/5 (- 29 °C) + 32 = (- 52.2) + 32 = (- 20.2) °F

So,

Temperature in Buffalo, NY: T₁ = (- 20.2) °F

Temperature in Anchorage, AL: T₂ = 19 °F

⇒ T₁ < T₂

<u>Therefore, Buffalo, NY was colder on February 9, 1934.</u>

4 0
4 years ago
No links please. How many moles of methane (CH4) are in 7.31x10^25 molecules?
ad-work [718]

Answer:

molar mass of methane CH4

= C + 4 H  

= 12.0 + 4 x 1.008

= 12.0 +  4.032

= 16.042g/mol

7.31 x 10^25 molecules x             1 mole  CH4      = 121.43 moles

                                      6.02 x 10^23 CH4 molecules

121.43 moles CH4 are present.

Explanation:

not to certain if this is right or not.. but hope it helps!

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2 years ago
Sapphires and Rubies are composed of ? <br>A. olive<br>B. turquoise<br>C. corundum<br>D. quartz​
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Answer:

c

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it is corundum now please follow me

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!!20 Points!!
elena-14-01-66 [18.8K]

Answer:Tungsten changes oxidation numbers +6 to zero

Undergoes reduction

Explanation:

did it!

4 0
3 years ago
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