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3 years ago

The energy stored in fossil fuels originated from ____. A) fusion B) lightning C) thermal energy D) electrical energy

1 answer:

5 0

Answer:I'm not completely sure but I think the energy stored in fossil fuels came from the sun and was captured through photosynthesis.

Explanation:

You might be interested in

Carbon and oxygen can only combine to form one compound. Select one aFalse b. True

erastovalidia [21]

Answer:

False

Explanation:

Carbon and Oxygen can for Carbon Monoxide (CO), Carbon Dioxide (CO2), Carbon Trioxide (CO3), etc.

3 0

3 years ago

What mass of YCL3 forms when 10.0 grams of each reactant are combined?

Triss [41]

The mass of $YCl_3$ that would be formed will be 18.22 grams

<h3>Stoichiometric calculations</h3>

Let us first look at the balanced equation of the reaction:

$2Y + 3Cl_2 --- > 2YCl_3$

The mole ratio of Y to $Cl_2$ is 2:3.

Mole of 10.0 grams of Y = 10/88.9 = 0.11 moles

Mole of 10.0 grams $Cl_2$ = 10/71 = 0.14 moles

3/2 of 0.11 = 0.165. Thus, $Cl_2$ is limiting in availability.

Mole ratio of $Cl_2$ and $YCl_3$ = 3:2

Equivalent mole of $YCl_3$ = 2/3 x 0.14 = 0.093 moles.

Mass of 0.093 moles $YCl_3$ =0.093 x 195.26 = 18.22 grams

More on stoichiometric calculations can be found here: brainly.com/question/27287858

#SPJ1

5 0

2 years ago

Juan and Tanisha wanted to build a track for their marbles. They wanted to see how fast their marbles would run down one

frutty [35]

Answer:

Explanation:

i took the test

4 0

4 years ago

During this reaction, P4 + 5O2 → P4O10, 1.5 moles of product were made in seconds. What is the rate of reaction? 0.011 g/min 210

Ivanshal [37]

The answer is: the rate of reaction is 850 g/min.

n(P₄O₁₀) = 1.5 mol; amount of product.

M(P₄O₁₀) = 283.9 g/mol; molar mass of phosphorus(V) oxide.

m(P₄O₁₀) = n(P₄O₁₀) · M(P₄O₁₀).

m(P₄O₁₀) = 1.5 mol · 283.9 g/mol.

m(P₄O₁₀) = 425.85 g in 30 seconds.

Make proportion: 425 g : 30 s = m(P₄O₁₀) : 60 s.

m(P₄O₁₀) = 850 g in 60 s.

7 0

3 years ago

Read 2 more answers

A cylinder with a radius of 5.6 cm and a height of 10.7 cm has what volume? (You can look up the formula for the volume of a cyl

Keith_Richards [23]

Answer:

$V=1054.2cm^{3}$

Explanation:

1. First take the cylinder volume formula:

$V=\pi.r^{2}.h$

2. Then take the values for the radius and the height of the cylinder and replace them into the formula:

$V=\pi*(5.6cm)^{2}*(10.7cm)$

3. Solve the equation:

$V=\pi*(31.36cm^{2})*(10.7cm)$

$V=\pi*335.5cm^{3}$

$V=1054.2cm^{3}$

6 0

4 years ago