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vampirchik [111]
3 years ago
9

DIMENTIONAL ANALYSIS! ‼️ASAP!!! BRAINLIEST!!‼️ PLS HELP!!! SHOW ALL WORK + STEPS!! Thx!

Chemistry
1 answer:
zhannawk [14.2K]3 years ago
4 0

Answer:

1037.56 mph

Explanation:

We are told the distance around the earth which is the circumference is 40075 km.

Converting to miles gives 24901.451 miles

Formula for speed = distance/time

Time for one rotation is 24 hours.

Thus, speed = 24901.451/24 = 1037.56 mph

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Answer:

Mecury almagamated zinc

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Consider the following reversible reaction. What is the equilibrium constant expression for the given system?
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The question is incomplete. Complete question is attached below
..........................................................................................................................

Answer: 
Equilibrium constant (K) is defined as the ratio of concentration of product to concentration of reactant.

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[ ] bracket in above expression indicates concentration.

  

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We drop a cube of ice into a glass of water. The mass of the cube of ice is 33.1 g and its initial temperature is −10.2∘C. The m
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Answer: The final temperature (T) will be;

16.23°c

Explanation: To find the final temperature of any mixture of substance with an initial temperature use the formula;

M1c(T-T1) + M2c(T-T2)=0

c is the specific heat capacity of the two different substance, but because ice and water are the same, we assume c to be 1

T= final temperature of the mixture

T1= initial temperature of the ice= -10.2°c

T2= initial temperature of the water= 19.7°c

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M2= mass of water= 251g

Using the formula above

33.1(T-(-10.2)) + 251(T-19.7)=0

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33.1T + 337.62 + 251T - 4944.7 = 0

Collecting like terms to both side of the equation and solving

33.1T + 251T = 4944.7 - 33.62

284.1T = 4607.08

T = 4607.08÷284.1 = 16.23°c

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