2 years ago

50. The Sun's energy and composition is provided by which of the following?

Chemistry

1 answer:

PIT_PIT [208]2 years ago

3 0

Answer:

A. the burning of fossil fuels within the Sun

Explanation:

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Which of the example most complete description an objects motion?

Rashid [163]

c] The golfer sent the golf ball flying toward the cup to score a hole in one.

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What are people who study wildfires called

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The person is called a wildlife biologist.

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The reactant concentration in a second-order reaction was 0.560 m after 115 s and 3.30×10−2 m after 735 s . what is the rate con

Aloiza [94]

Use the formula for second order reaction:

$\frac{1}{C} = \frac{1}{C_0} + kt$

C = concentration at time t
C0 = initial conc.
k = rate constant
t = time

1st equation : $\frac{1}{0.56} = \frac{1}{C_0} + 115k$

2nd Equation: $\frac{1}{0.033} = \frac{1}{C_0} + 735k$

Find $\frac{1}{C_0}$ from 1st equation and put it in 2nd equation:

$\frac{1}{0.033} = \frac{1}{0.56} - 115k + 735k$

$\frac{1}{0.033} - \frac{1}{0.56} = 620k$

k = 0.046

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3 years ago

An objective that revolves around a planet is... A) star B) moon C)dwarf planet

Evgen [1.6K]

Answer:

B. Moon

Explanation:

An object revolving around a star is a planet or a dwarf planet (dependent on size).

An object revolving around a planet is a moon.

An object revolving around a black hole is a goner.

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3 years ago

Question 1 (2 points)

bogdanovich [222]

Answer:

3.75 L

Explanation:

We can solve this problem by using Charles' law, which states:

V₁T₂=V₂T₁

Where subscript 1 stands for initial volume and temperature and subscript 2 for final volume and temperature, meaning that in this case:

V₁ = 2.5 L

T₂ = 300 K

V₂ = ?

T₁ = 200 K

We input the data:

2.5 L * 300 K = V₂ * 200 K

And solve for V₂:

V₂ = 3.75 L

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2 years ago