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Over [174]
3 years ago
13

Make a line graph of the data found above. On the same graph, show the average number of paper clips

Chemistry
1 answer:
Svetlanka [38]3 years ago
8 0

Answer:

The answer would be 9/7

Explanation:

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Giving brainiest to whoever answers correctly.
Digiron [165]

Answer:250

Explanation:

5 0
3 years ago
Calculate the number of pounds of CO2 released into the atmosphere when a 22.0 gallon tank of gasoline is burned in an automobil
IrinaK [193]

Answer:

391.28771 pounds of carbon-dioxide released into the atmosphere.

Explanation:

Density of the gasoline ,d= 0.692 g/mL

Volume of gasoline in an tanks,V = 22.0 gallons = 83,279.02 mL

Let mass of the gasolin be M

d=\frac{M}{V}

M = V × d = 83,279.02 mL × 0.692 g/mL=57,629.081 g

Assume that gasoline is primarily octane (given)

2C_8H_{18}+25O_2\rightarrow 16CO_2+18H_2O

Mass of octane burnt in the tank =  M = 57,629.081 g

Moles of octane =\frac{57,629.081 g}{114.08 g/mol}=505.1637 mol

According to reaction, 2 moles of octane gives 16 moles of carbon-dioxide.

Then 505.1637 mol of octane will give:

\frac{16}{2}\times 505.1637 mol=4,041.3100 mol of carbon-dioxide

Mass of 4,041.3100 mol of carbon-dioxide:

4,041.3100 mol × 44.01 g/mol = 177,858.05 g

Mass of carbon-dioxide produced in pounds = 391.28771 pounds

391.28771 pounds of carbon-dioxide released into the atmosphe

4 0
3 years ago
The middle ear converts sound from what into vibrations that can be sent through what?
Katarina [22]

Answer:

.

Explanation:

Eardrum or tympanic membrane changes sound to vibration and pass through malleus, incus and stapes.

5 0
3 years ago
Cl2 + 2na → 2nacl 1.5 moles of cl2 and 4.0 moles of na are combined and allowed to react. the limiting reactant will be ___(i)__
cricket20 [7]
Hope this helps you;):):

7 0
3 years ago
A sample of gas occupies 806 mL at 26 degrees c and 1 atm. Find the volume of the gas at STP
Varvara68 [4.7K]
The standard temperature and pressure is 273 K and 1 atm. Since, pressure is not changed we can use Charle's law for the calculations.

<span>Charle's law says "at a constant pressure, the volume of a fixed amount of gas is directly proportional to its absolute temperature".

V α T 

Where V is the volume and T is the temperature in Kelvin of the gas. We can use this for two situations as,
V</span>₁/T₁ = V₂/T₂<span>

</span>V₁ = 806 mL<span>
T</span>₁ = 26 ⁰C = 299 K
V₂ <span>= ? </span><span>
T</span>₂ = 273 K<span>
<span>
By applying the formula,
</span></span>(806 mL / 299 K) = (V₂ / 273 K)

                       V₂ = 735. 91 mL

<span>
Hence, the answer is "a".</span>

6 0
3 years ago
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