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2 years ago

Its Accelerated Science 8th grade

Chemistry

1 answer:

skelet666 [1.2K]2 years ago

8 0

In my opinion I believe it would be motion because depending on how fast the person is going it would determine the outcome of the race

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C2H6(g) + O2(g) → CO2(g) + H2O(g)

attashe74 [19]

Answer:

2C2H6 + 7O2 --> 4CO2 + 6H20

Explanation:

Balanced equation

5 0

3 years ago

Read 2 more answers

When rearranging the formula for density, mass is equal to:?

Jet001 [13]

Mass equals density times volume
Because D=m/v
Multiply by v
Dv=m

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3 years ago

Assuming constant pressure, rank these reactions from most energy released by the system to most energy absorbed by the system,

gayaneshka [121]

Answer:

B > D > C > A

Explanation:

For the first law of the thermodynamics, the total energy variation in a process is:

ΔU = Q - W

Where Q is the heat, and W the work. If the system loses heat, Q < 0, if it absorbs heat, Q>0. If work is done in the system (volume decreases), W < 0, if the system does the work (volume increases), W > 0.

A. If the surroundings get colder, the system is absorbing heat, so Q>0, and the system decreases in volume so W < 0 :

ΔU = +Q - (-W) = +Q + W (absorbs a higher energy)

B. If the surroundings ger hotter, the system is losing heat, so Q<0, and the system expands, so W>0:

ΔU = -Q -W (loses higher energy)

C. Surroundings get hotter, Q<0, and the system decreases in volume, W<0

ΔU = - Q + W = 0 (magnitude of heat and work is similar)

D. Surroundings get hotter, Q<0, and the system is not changing in volume, W = 0.

ΔU = -Q (loses energy)

For the most released (more negative) for the most absorbed (most positive):

B > D > C > A

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3 years ago

Convert 50 m to mm <br> using the method of dimensional analysis

shusha [124]

Answer:

Explanation:

meters has to go on the bottom of the bracket used for conversion

50m [ 1000 mm / 1 m]= 50000 mm The meters cancel

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2 years ago

CER sentence starter

jonny [76]

Answer:

CER all starts with a question asked by the teacher. This question is based on a phenomena or lab experience. The student's explanation or answer, as you may have guessed, will consist of three parts: a claim, the evidence, and the student's reasoning. A claim is a statement that answers the question. Start with a hook or attention getting sentence. Briefly summarize the texts • State your claim. Make sure you are restating the prompt. Include a topic sentence that restates your claim and your reason.

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2 years ago

Its Accelerated Science 8th grade​

Its Accelerated Science 8th grade