Which one is a true statement about exothermic reactions?A.
Energy from an outside source is continuously being added
B.
The reaction container always feels cold.
C.
The reactants have more heat energy than the products.
D.
More heat is given off than is put into the reaction.

Answers

Answer 1

Answer:

The statement which is true about exothermic reactions is as follows:

The reactants have more heat energy than the products.

Thus, the correct option for this question is C.

What is an Exothermic reaction?

An exothermic reaction may be defined as a type of reaction in which energy is significantly liberated in the form of heat or light. In such types of reactions, energy is generally transferred into the surroundings rather than utilized from the surroundings.

The option "energy from an outside source is continuously being added" represents an endothermic reaction in which heat or light energy is externally been provided. The option "more heat is given off than is put into the reaction" is not absolutely true because exothermic reactions liberate energy but it does not matter if it is higher or lower than that of being put into the reaction.

Therefore, the reactants have more heat energy than the products is a statement that is true about exothermic reactions. Thus, the correct option for this question is C.

To learn more about Exothermic reactions, refer to the link:

brainly.com/question/2924714

#SPJ5

Answer 2

Answer: An Exothermic Reaction , gives off more heat, and a little energy to its surroundings.
this can helps us figure out that the answer is , C, More heat is given off into its products.

most people would choose D, but i beg to differ.

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A fighter bomber is making a bombing run flying horizontally at 500 knots (256m/s) at an altitude of 100.0m. a) How long will it take for the bomb to hit the ground after it is dropped from the plane?

b) How far will the bomb go over the ground (in the x direction) before it hits the target?

Answers

Answer:

(a) t = 4.52 sec

(b) X = 1,156.49 m

Explanation:

Horizontal Launching

If an object is launched horizontally, its initial speed is zero in the y-coordinate and the horizontal component of the velocity $v_o$ remains the same in time. The distance x is computed as.

$\displaystyle x=v_o.t$

(a)

The vertical component of the velocity $v_y$ starts from zero and gradually starts to increase due to the acceleration of gravity as follows

$v_y=gt$

This means the vertical height is computed by

$\displaystyle h=h_o-(gt^2)/(2)$

Where $h_o$ is the initial height. Our fighter bomber is 100 m high, so we can compute the time the bomb needs to reach the ground by solving the above equation for t knowing h=0

$\displaystyle t=\sqrt{(2h_o)/(g)}$

$\displaystyle t=\sqrt{(2(100))/(9.8)}=4.52\ sec$

(b)

We now compute the horizontal distance knowing $v_o=256\ m/s$

$\displaystyle x=(256).(4.52)$

$X=1,156.49\ m$

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Answers

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An engineer discovered that a TV set was receiving too much voltage to work properly.Which of the following circuit parts should the engineer add to make the TV set work properly?A.Switch
B.Insulator
C.Resistor
D.Conductor

Answers

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How did scientists boost the spacecraft Juno on its way to Jupiter, helping it overcome the gravitational pull of the Sun?

Answers

For the answer to the question above asking how did scientists boost the spacecraft Juno on its way to Jupiter, helping it overcome the gravitational pull of the Sun?
Scientists boost the spacecraft Juno on its way to Jupiter, helping it overcome the gravitational pull of the Sun by using a gravitational slingshot.

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Answers

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Other hormones come from the thyroid gland, the parathyroid gland, the pituitary gland near the brain, and the brain itself. These hormones control levels of calcium in the blood, energy levels, and ability to grow. They act the same in boys and in girls. Healthy bones need the correct levels of all of these hormones. There are many reasons these hormones can be too high or low, but fortunately they are all uncommon.

Most of these hormones do not become abnormal because of things we can do. Estrogen and testosterone, however, depend on normal body weight. If teenagers do not get enough nutrition and become too thin, then the hormone levels will be too low. The parathryoid hormone also responds to nutrition. Too little calcium causes parathyroid hormone to increase and that will dissolve some of the bone.

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