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o-na [289]
3 years ago
15

Which increases the rate of a chemical reaction?

Chemistry
1 answer:
Anastasy [175]3 years ago
3 0
A catalyst

A catalyst can be in many forms
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when a substance donates a proton during a chemical reaction, that substance can be classified as a(an) ___ ?
Anarel [89]

Answer:

An acid

Explanation:

According to the Arrhenius theory of acids and bases "an Arrhenius acid is a compound that increases the concentration of H+ ions that are present when added to water"

4 0
4 years ago
A book is pushed off the edge of a table. At what point during the fall will the potential and kinetic energy be equal?
vfiekz [6]

Answer:

KE = PE at half the table Height:

Explanation

AT ANY POINT IN THE BOOK'S FALL,

TOTAL E = PE +KE

THE TOTAL E IS CONSTANT

Before the book is pushed off, the total energy is potential

TOT E=PE =MGH

BEFORE THE BOOK HITS THE GROUND, THE TOTAL E IS KINETIC

TOT=KE = MVXV/2

WHEN KE = PE

KE+PE =<u> MGH (STARTING ENERGY SINCE E IS CONSERVED)</u>

<u>OR PE+ PE = MGH</u>

<u>OR MGH' + MGH' =MGH</u>

<u>OR 2H' =</u>H

H' (NEW HEIGHT) =H/2

5 0
3 years ago
1. Moby travels down a halfpipe on his skateboard in five seconds. His speed at the bottom is 10 m/s. What was his
pshichka [43]

The acceleration of Moby is 2 m/s²

<u>Explanation:</u>

Given:

Time, t = 5 seconds

Velocity, v = 10 m/s

Acceleration ,a = ?

We know:

Acceleration = \frac{velocity}{time}

On substituting the value we get:

a = \frac{10}{5} \\\\a = 2 m/s^2

Therefore, the acceleration of Moby is 2 m/s²

3 0
4 years ago
A cube 20 cm could contain how many millimeters of fluid
labwork [276]

Answer:

The cube will contain 8000 mL of the fluid.

Explanation:

  • Knowing that the volume of the cube = L³.

where, L is the edge length.

∴ V of the cube = L³ = (20.0 cm)³ = 8000 cm³.

Knowing that 1.0 cm³ = 1.0 mL.

<em>∴ The cube will contain 8000 mL of the fluid.</em>

3 0
4 years ago
A variable that is not being directly tested during an experiment should be ____. changed
Kruka [31]

Controlled because there is always going to be a control group and an experimental group so that you could see the difference in the results

7 0
4 years ago
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