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Dafna1 [17]
3 years ago
6

true or false: the use of fossil fuels for energy production beneficial to the environment and not cause environmental problems

in future
Chemistry
1 answer:
MissTica3 years ago
8 0
Answer:


False
Step by step
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A parachute on a racing dragster opens and changes the speed of the car from 85 m/s to 45 m/s in a period of 4.5 seconds. What i
LiRa [457]

Answer:

- 8.89 m/s^{2}

Explanation:

\frac{(Vf-Vo)}{time} =  \frac{(45-85 m/s)}{4.5s} = - 8.89 m/s^{2}

7 0
3 years ago
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1. Calculate the number of moles of carbon dioxide formed when 40.0 moles of oxygen is consumed in the burning of propane. Note
Andrews [41]

Answer:

1. D (24.0 moles CO2)

2. A (.239 moles H2)

Explanation:

1. First Balance the equation

1 C3H8 + 5 O2 ---> 3 CO2 + 4 H2O

Then set up a stoiciometric equation so that the moles of O2 cancel out

40mol O2 x \frac{3 mole CO2}{5 mole O2} = 24.0 moles CO2

2. Set up a stoichiometric equation

10 grams Fe x \frac{1 mole Fe}{55.85 grams Fe} x \frac{4 mole H2}{3 mole Fe} = 0.239 moles H2

6 0
2 years ago
8 mm =<br> Cm<br> What’s the answer to that???
Vika [28.1K]

Answer:

0.8 cm

Explanation:

If 1mm is 0.1 cm, then

8mm is 0.8 cm since 8 * 0.1 is 0.8

4 0
3 years ago
Can anyone do these problems? ​
timama [110]

Answer:

-76

296

228

603

485

Explanation:

Subtract 273 to 200 to get -76

add 273 to 23 to get 296

add 273 to -45 to get 228

subtract 273 to 876 to get 603

add 273 to 212 to get 485

8 0
3 years ago
What is the oxidation number of nitrogen in nitrogen gas?
andrew11 [14]
Ans: (D) 0
Hope my answer is correct:))
3 0
2 years ago
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