1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Snezhnost [94]
3 years ago
7

Which of the following is a diatomic molecule? a. ca2- b. n2 c. kcl d. mgcl2

Chemistry
1 answer:
ipn [44]3 years ago
8 0
N2 is a diatomic molecule as it is composed of 2 atoms of the same element, covalently bonded to each other in this case Nitrogen.
You might be interested in
Urea makes up a significant amount of urine, and is the chemical that the body uses to rid cells of unwanted carbon dioxide and
Ira Lisetskai [31]
Urea is highly soluble in water. When it is allowed to dissolve in water in the presence of heat, it will yield ammonia and carbon dioxide. The reaction is shown below:

<span>NH2-CO-NH2 + H2O </span>⇒ 2 NH3 + CO2

As you can observe in the stoichiometric equations, 1 molecule of water can dissolve with 1 mole of urea.
3 0
3 years ago
Which situation would lead to increased competition
I am Lyosha [343]

I would say B because c and d would decrease competition and a would do the same, or just kill the ecosystem.

Hope this helps and don't forget to hit that heart :)

8 0
3 years ago
What is temperature?
BabaBlast [244]

the degree or intensity of heat present in a substance or object, especially as expressed according to a comparative scale and shown by a thermometer or perceived by touch. So I would have to go with A.

8 0
3 years ago
Read 2 more answers
Based on the information above, which statement provides evidence that a chemical reaction has occurred?
Vesna [10]

Answer: Atoms that make up reactants rearrange into new products

Explanation:

A chemical reaction is the process of breaking down the chemical bonds of the reacting substances  which are commonly called as reactants and making new bonds to form new substances commonly called as products.

The products will contain the same atoms as there are in the reactants but the bonds will rearrange to form different substances.

Every chemical reaction is accompanied with absorption or release of energy.

3 0
3 years ago
What mass of the protein gelatin is needed to make 0.5 L of a 3 g/L gelatin solution? Show your work.
REY [17]

Answer:

m = 1.5 gram

Explanation:

Given that,

Density of protein gelatin, d = 3 g/L

The volume of protein gelatin, V = 0.5 L

We need to find the mass of the protein gelatin. The density of an object is given by :

d = m/V

Where

m is mass

m=d\times V\\\\m=3\ g/L\times 0.5\ L\\\\m=1.5\ g

So, the required mass is 1.5 gram.

6 0
2 years ago
Other questions:
  • Write a nuclear equation to represent radium-226 decaying to radon-222 plus an alpha particle.
    11·1 answer
  • Aluminum has a density of 2.7 g/cm3, how much space in cm3 would 81 grams of aluminum occupy? Show steps to answering this equat
    14·1 answer
  • During a titration, a known concentration of _____ is added to a _____ of an unknown concentration g
    9·1 answer
  • If you have 0.56 moles of an ideal gas at 87c and a pressure of 569 torr, what volume will the gas take up
    7·1 answer
  • How many moles of calcium chloride, cacl2, can be added to 1.5 l of 0.020 m potassium sulfate, k2so4, before a precipitate is ex
    9·1 answer
  • 10. If 200. L of ammonia (NH3) are produced in the reaction between nitrogen and hydrogen at STP, how many
    8·1 answer
  • Mechanical energy is the sum of the _____ energy of an object. A kinetic and potential B potential and thermal C kinetic and che
    6·1 answer
  • Molar mass (NH4)2SO4
    6·1 answer
  • describe the differences of the kinetic energy of a cold water solution to that of a hot water solution
    11·2 answers
  • Please help!-- 20 pts!
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!