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3 years ago

A student made a sketch of a potential energy diagram to represent an exothermic reaction.

Mathematics

2 answers:

dalvyx [7]3 years ago

6 0

This diagram is incorrect because in an exothermic reaction, the amount of potential energy in of the reactants is higher than that of the products because energy is being released. In this diagram, the potential energy of the products is higher than the reactants, which would represent an endothermic reaction because energy is being absorbed. If you simply look up exothermic reactions and endothermic reactions, you can view countless images of digrams that show this.

Jlenok [28]3 years ago

5 0

Answer:

This is not correct

Step-by-step explanation: I am just a 6th grader but i know this question, it is not correct because potential energy is mostly staying in one place this would be kenetic energy because it is moving.

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A particular beach is eroding at a rate of 4 centimeters per year. A realtor converts this rate to millimeters per day. Which ex

monitta

Correct answer is A) StartFraction 4 centimeters Over 1 year EndFraction times StartFraction 10 millimeters Over 1 centimeter EndFraction times StartFraction 1 year Over 365 days EndFraction

<u>Step-by-step explanation:</u>

We have , A particular beach is eroding at a rate of 4 centimetres per year. A realtor converts this rate to millimetres per day. We need to find correct expression, when evaluated, results in the correct units and numerical value . Let's find out:

We know that, A particular beach is eroding at a rate of $4\frac{cm}{year}$

$1cm = 10mm$

$1 year = 365 days$

⇒ $4(\frac{cm}{year})$

⇒ $4(\frac{10mm}{year})$

⇒ $4(\frac{10mm}{365days})$

⇒ $\frac{40mm}{365days}$

⇒ $\frac{8mm}{73days}$

Therefore, According to calculations, Correct answer is A) StartFraction 4 centimeters Over 1 year EndFraction times StartFraction 10 millimeters Over 1 centimeter EndFraction times StartFraction 1 year Over 365 days EndFraction

3 0

2 years ago

Read 2 more answers

50 POINTS .....................

Alenkinab [10]

The option (C) Mus. Apt. = -22.26 + 0.4925(IQ score) is correct because the value of slope is 0.4925 and y-intercept is -22.26.

A mathematical notion called the line of the best fit connects points spread throughout a graph. It's a type of linear regression that uses scatter data to figure out the best way to define the dots' relationship.

$\rm m = \dfrac{n\sum xy-\sum x \sum y}{n\sum x^2 - (\sum x)^2}$

$\rm c = \dfrac{\sum y -m \sum x}{n}$

We have data shown in the picture.

Let's suppose the regression line is:

y = mx + c

Where m is the slope of the regression line and c is the y-intercept of the line.

We can calculate the value of m and c by using the formula.

After calculating, we get:

m = 0.4925

c = -22.26

Mus. Apt. = 0.49253(IQ score) - 22.26

Mus. Apt. = -22.26 + 0.4925(IQ score)

Thus, the option (C) Mus. Apt. = -22.26 + 0.4925(IQ score) is correct because the value of slope is 0.4925 and y-intercept is -22.26.

Learn more about the line of best fit here:

brainly.com/question/14279419

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Maru [420]

Answer:

Step-by-step explanation:

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♫ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ♫

➷ A variable is an unknown number that is represented by a letter, for example, x.

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