Ask question

Ask question

All categories

3 years ago

14

Select the correct answer.

2 answers:

elixir [45]3 years ago

5 0

A) Energy is absorbed in the reaction.

Such reactions are called endothermic reactions.

svetoff [14.1K]3 years ago

3 0

Answer:

<h2>A. Energy is absorbed in the reaction.</h2>

Explanation:

In chemistry, there are two types of reactions: <em>Exothermic and Endothermic Reactions.</em>

An <em>exothermic reaction </em>occurs when the reactants have higher energy than the products, the effect is <em>energy released</em>.

On the contrary, an <em>endothermic reaction</em> is when the products have higher energy than reactants, and the <em>energy is absorbed.</em>

So, based on these concepts, the correct answer is A, in a given chemical reaction, if the energy of the products is greater than the energy of the reactants, energy is absorbed.

You might be interested in

an open rectangular tank 1.0 meter wide and 2.0 meter long contains gasoline to a depth of 1.5 meters. if the height of the tank

Alekssandra [29.7K]

The maximum horizontal acceleration is solved to be 4.91 m/s^2

<u />

<h3>What is acceleration?</h3>

This is a term in physics that refers to change in velocity with time. Acceleration can be positive or negative or zero,

<u />

<u>Given data</u>

open rectangular tank

width = 1.0 m

length = 2.0 m

gasoline depth level = 1.5 m

height of the tank = 2.0 m

<h3>How to solve for maximum horizontal acceleration</h3>

lets represent the volume with x, y, and z such that z corresponds to height, y corresponds to wide or width, and x corresponds to length.

dz / dy = - ay / ( g + az )

where

ay = acceleration in the y direction

az = acceleration in the z direction which is equal to zero

g = acceleration due to gravity

plugging in az = 0

dz / dy = - ay / ( g )

ay = - ( dz / dy ) * g

to prevent spilling

dz / dy = - ( 1.5 - 1 ) / 1

dz / dy = - 0.5

ay = - ( - 0.5 ) * 9.81

ay = 4.91 meters per second square

Hence the maximum horizontal acceleration is solved to be 4.91 m/s^2

Read more on acceleration here: brainly.com/question/605631

#SPJ1

7 0

2 years ago

The label on a bottle of soda can shows the can contains 397 ml of soda how many litters of soda are in one can

oee [108]

Answer:

0.397

Explanation:

Divide the volume value by 1000

6 0

3 years ago

Two masses, each having a value of M, are vibrating vertically on a spring with a Hooke's law constant, k. At the lowest point o

ELEN [110]

What are you asking for they

7 0

3 years ago

When you drink cold water, your body must expend metabolic energy in order to maintain normal body temperature (37° C) by warmin

Andre45 [30]

Answer:

$V=12.1622\ L$

Explanation:

Given:

Initial temperature of water, $T_i=0^{\circ}C$

final temperature of water, $T_f=37^{\circ}C$

energy spent in one hour of walk, $Q=450\ kcal=450\times4186=1883700\ J$

volumetric capacity of stomach, $V=1\ L$

<em>Now, let </em><em>m </em><em>be the mass of water at zero degree Celsius to be drank to spend 450 kilo-calories of energy.</em>

We know:

$Q=m.c.\Delta T$ .....................................(1)

where:

m = mass of water

Q = heat energy

$\Delta T=$ temperature difference

$c=4186\ J.kg^{-1}.K^{-1}$ = specific heat capacity of water

<u>Putting values in the eq. (1):</u>

$1883700=m\times 4186\times 37$

$m=12.1622\ kg$

Since water has a density of 1 kilogram per liter, therefore the volume of water will be:

$V=12.1622\ L$

8 0

3 years ago

I need help on number 11 please help

Crazy boy [7]

C. bottle opener is the correct answer.

5 0

4 years ago