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2 years ago

If a reaction is exothermic, what is true of its reverse reaction?

Chemistry

1 answer:

Allushta [10]2 years ago

3 0

Answer:

the forward reaction will have a lower activation energy than the reverse reaction.

Explanation:

hope this helps

i am so sorry if this is the wrong answer

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The measure of the attraction that an atom has for electrons involved in chemical bonds is known as:

Mariana [72]

Electronegativity is the tendency of atom to attract shared pair of electron towards itself . Its value is out of 4 , and Fluorine is higly electronegative.
So,
D electronegativity, is the correct answer.

7 0

3 years ago

Which balanced equation represents a chemical change?

Paul [167]

Number 2. this is a chemical change cuz numbers 1, 3 and 4 are physical. So if you add the equation of 2 it has two molecules.

4 0

2 years ago

Read 2 more answers

An irrelgular object with a mass of 118g displaces 25ml of water when placed in a graduated cylinder. What is the density

oksian1 [2.3K]

Density = Mass of Object / Volume of water displaced.

The volume of water displaced is the same as the volume of the object.

Density = 118 g / 25 ml

   = 4.72 g/ml

But 1 liter = 1000 cm³
   1 mL = 1 cm³

   Density = 4.72 g/ml = 4.72 g/cm³

5 0

3 years ago

10. A rectangle box measures 6.00 in. in length, 7.00 in. in width, and 8.00 in. in height. What is the volume of the box in lit

erastova [34]

A rectangle box measures 6.00 in. in length, 7.00 in. in width, and 8.00 in. in height. The volume of the rectangular box is 5.506 L

Given,

1 inch = 2.54 cm

Length = 6.00 inches = 6.00 x 2.54 cm = 15.24 cm

Width = 7.00 inches = 7.00 x 2.54 cm = 17.78 cm

Height = 8.00 inches = 8.00 x 2.54 cm = 20.32 cm

Now,

Volume of rectangular box = Length x Width x Height

= 15.24 cm x 17.78 cm x 20.32 cm

= 5506.05 cm3

= 5506.05 mL (\small \because 1 cm3 = 1 mL)

= 5.506 L (\small \because 1000 mL = 1 L)

Hence, the volume of rectangular box is 5.506 L.

Learn more about Volume of rectangular brainly.com/question/21308574

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6 0

1 year ago

Which statement about subatomic particles is true?

Dafna1 [17]

The correct statement about subatomic particles is Electrons are the subatomic particles with the smallest mass.

The mass of protons and neutrons which are considered as 1 unit of mass of atoms is approximately 1836 times the mass of the electron

$\boxed {\boxed {\bold {Further ~ explanation}}}$

Atoms are composed of 3 types of basic particles namely protons, electrons, and neutrons

The mass of this basic particle is expressed in units of atomic mass

This atomic unit uses the standard atomic mass, that is, the C-12 isotope

1 atom C-12 = 12 atomic mass units

1 atomic mass unit = 1/12 x mass 1 C-12 atom

1 unit of atomic mass = 1.66.10⁻²⁴

the mass of each basic particle in atomic mass units is:

electron mass = 9.11.10⁻²⁸

proton mass = 1.6726.10⁻²⁴

neutron mass = 1,675.10⁻²⁴

The proton mass is considered to be equal to 1 atomic mass unit and a neutron which is also considered to be equal to 1 atomic mass unit

The charge of 1 proton is equal to a charge of 1 electron but has a different sign

The proton is positively charged (+1), the electron is negatively charged (-1). and neutrons not charged (neutral)

For a charge of 1 electron = e = 1.66.10⁻¹⁹ coulomb

Whereas the neutron charge = 0

Let's look at the answer choices

1. Protons are the only subatomic particles to have a charge.

This statement is wrong because in the nucleus there are electrons charged -

2. Electrons are the subatomic particles with the smallest mass.

The statement is true because the mass of protons and neutrons which are considered as 1 unit of mass of atoms is approximately 1836 times the mass of the electron

3. Neutrons orbit the nucleus of the atom.

This statement is wrong.

It can be explained by the Bohr atomic model, where electrons circulate the nucleus on a particular path so that electrons are not attracted to the nucleus.