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
cestrela7 [59]
2 years ago
11

Hey! Could someone explain how to do this? Thanks!

Chemistry
1 answer:
Aleksandr [31]2 years ago
4 0

Answer:

2

Explanation:

The compounds XCl₂ and  X₃N₂ shows that the valency of X is 2. If they are ionic compounds then X is a metal. The metals having valency=2 mostly reside in group-2. Exapmle: MgCl₂ and Mg₃N₂.

You might be interested in
Which element is chemically similar to chlorine?
ad-work [718]

bromine

Explanation:

halogens are a group of elemnts simlar to eachother

flourine, chlorine, and bromine

6 0
3 years ago
Hydrogen iodide, HI, is formed in an equilibrium reaction when gaseous hydrogen and iodine gas are heated together. If 20.0 g of
Kaylis [27]

Answer: D. 19.9 g hydrogen remains.

Explanation:

To calculate the moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}

a) moles of H_2

\text{Number of moles}=\frac{20.0g}{2g/mol}=10.0moles

b) moles of I_2

\text{Number of moles}=\frac{20.0g}{254g/mol}=0.0787moles

H_2(g)+I_2(g)\rightarrow 2HI(g)

According to stoichiometry :

1 mole of I_2 require 1 mole of H_2

Thus 0.0787 moles of l_2 require=\frac{1}{1}\times 0.0787=0.0787moles of H_2

Thus l_2 is the limiting reagent as it limits the formation of product and H_2 acts as the excess reagent. (10.0-0.0787)= 9.92 moles of H_2are left unreacted.

Mass of H_2=moles\times {\text {Molar mass}}=9.92moles\times 2.01g/mol=19.9g

Thus 19.9 g of H_2 remains unreacted.

5 0
3 years ago
A cube is 4 cm on each side. What is its volume?<br><br> Answer: 64cm^3
Anit [1.1K]

Answer:

yeah

Explanation:

5 0
3 years ago
Which of the following best describes subduction?
siniylev [52]

Answer:

A more dense plate going underneath a less dense plate.

5 0
2 years ago
Pls help me on this question????
astraxan [27]

Explanation:

The first one is series circuit as it is joined one after another while the second one is parallel circuit joined in a parallel way. Ok the line just like this --------- is the wire , the sign like this | | is the battery and the circles with cross are the bulbs

Hope this helps :) Have a great day

7 0
3 years ago
Other questions:
  • The surface of water can act like a sort of skin due to a property of liquids called
    9·2 answers
  • A scientist would most likely need to update her model when it
    9·2 answers
  • (I seriously don't understand what this questin means, please don't delete need all the help i can get)
    8·2 answers
  • Chlorine is widely used to purify municipal water supplies and to treat swimming pool waters. suppose that the volume of a parti
    9·2 answers
  • Read the given equation.
    12·2 answers
  • Which of the following statements is true about what happens during a chemical reaction?
    12·2 answers
  • Quartz when heat and pressure are apllied to it
    7·1 answer
  • 1.
    15·1 answer
  • How to solve the equation for the value of X
    12·1 answer
  • Living things are classified into groups based on similar characteristics which of the following best represents how plants are
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!