CHEMISTRY HIGH SCHOOL

Nitrogen gas has the chemical formula N2. One molecule of nitrogen gas is made up ofA.
one atom of nitrogen and one atom of oxygen.
B.
two atoms of nitrogen and one atom of oxygen.
C.
two atoms of nitrogen.
D.
one atom of nitrogen.

Answers

Answer 1
Answer:

Nitrogen gas has the chemical formula N2. One molecule of nitrogen gas is made up of two atoms of nitrogen.

The correct option is C.

Explanation:

Nitrogen gas has the chemical formula N_(2), which means that two atoms of nitrogen element combined to form nitrogen gas.

The combination of two atoms of element nitrogen produce dinitrogen atom.

Dinitrogen is the nitrogen gas usually present in atmosphere of the earth in abundance.

2 atoms of nitrogen element

N + N = N_(2)

the gas is colorless and odorless formed at standard condition of temperature and pressure. The two nitrogen atoms are tightly bonded with triple bonds in between the atoms.

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Answers

conserved. if its absorbed then there will be no reaction.

How many atoms of carbon are in 24 grams of carbon?a) 1.2 x 10²⁴ atoms
b) 1.7 x 10²⁶ atoms
c) 1.2 x 10²⁵ atoms
d) 3.0 x 10²⁴ atoms
e) 3.0 x 10²³ atoms

Can anyone explain this one?

Answers

(3 grams of carbon) x (1 mole of carbon/12 grams ) =3/12 = 1/4 of a mole of carbon. Then... ( 1/4 of a mole) x (6.02 x 10^23 atoms/mole) = approximately 1.5 x 10^23 atoms.

which of the molecules listed below directly donates a nitrogen atom for the formation of urea during the urea cycle?

Answers

Aspartate directly donates a nitrogen atom from the formation of urea during the urea cycle.
The argininosuccinate synthase reeaction links aspartate and citrulline via the amino group of aspartate and provides the second nitrogen of urea.

A neutron star that spins and emits beams of energy is called a _____.protostar
red dwarf
white dwarf
pulsar
black hole

Answers

Answer:

The correct answer is pulsar.

Explanation:

Protostar : Its a young star with contracting mass which gains mass from its parent molecular cloud. At this stage fusion process does not start.

Red dwarf:  A star having lower surface temperature , luminosity, mass and size than of the sun.

White dwarf : its an ultimate stage for an average mass star like sun . its a small dense star with size relatively equal to planet.

Pulsar :  A rotating neutron star that emits beam of radio waves and other electromagnetic radiations.

Black hole:  It is region of space time with very strong gravitational pull that even smallest particle or electromagnetic wave is incapable to escape it.
I believe its a pulsar

According to the Arrhenius theory, when a basedissolves in water it produces
(1) CO3 2– as the only negative ion in solution
(2) OH– as the only negative ion in solution
(3) NH4 + as the only positive ion in solution
(4) H+ as the only positive ion in solution

Answers

According to Arrhenius Theory of acids and bases, when a base dissolves in water, the only negative ion produced is OH-.

Therefore, (2) OH– as the only negative ion in solution is the correct answer.

Hope this would help~

Why is ice cream a mixture

Answers


Ice is a mixture and it can be a compound at the same time. A mixture is when you have to substance's put together fro example you can mix salt and sugar together. But a compound is when two different elements or molecules are combined. Ice cream is a mixture or cream and sugar mainly.
ice cream are a mixture because they are a mix of two different things like milk, salt and other ingrediants used to make ice cream.
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