3 years ago

______ transport requires the use of energy.

Chemistry

2 answers:

Leona [35]3 years ago

5 0

Hi There! :)

Active <span>transport requires the use of energy. :)

Therefore A</span>

stiks02 [169]3 years ago

3 0

Hello i believe that the answer is a

You might be interested in

What is mass wasting and how can it disturb the ecosystem ? (Need this ASAP PLEASEE !!!)

Naddika [18.5K]

Xkgxkydlfyfktdtkdlyflyfyl

8 0

2 years ago

What role does the vulture playing this food web

musickatia [10]

Answer:

scavenger- eats dead carcasses

Explanation:

4 0

3 years ago

Which salt is produced when NH4OH Reacts with HNO3

borishaifa [10]

Explanation:

When an acid reacts with a base then it results in the formation of salt and water.

$HNO_{3}$ is an acid and $NH_{4}OH$ is a base thus, when we dissolve ammonium hydroxide in nitric acid then it results in the formation of ammonium nitrate and water.

The reaction is as follows.

$NH_{4}OH + HNO_{3} \rightarrow NH_{4}NO_{3} + H_{2}O$

Hence, there will be formation of ammonium nitrate $(NH_{4}NO_{3})$ salt.

5 0

2 years ago

Read 2 more answers

Boron has two isotopes, Boron 10 which has a mass of 10.0129 amu and Boron-11 with a mass of 11.0093 amu. B-10 occurs 84.74% of

podryga [215]

The average atomic mass of Boron: 10.431 amu

<h3>Further explanation </h3>

Isotopes are atoms whose no-atom has the same number of protons while still having a different number of neutrons.

So Isotopes are elements that have the same Atomic Number (Proton)

Atomic mass is the average atomic mass of all its isotopes

In determining the mass of an atom, as a standard is the mass of 1 carbon-12 atom whose mass is 12 amu

Mass atom X = mass isotope 1 . % + mass isotope 2.% + ...

The average atomic mass of boron :

$\tt avg~mass=0.8474\times 10.0129+0.1526\times 11.0093\\\\avg~mass=10.431~amu$

3 0

2 years ago

When calcium forms an ion that has the same number of outer electrons as which noble gas?

Talja [164]

The answer is 4 krypton

6 0

2 years ago