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
Oliga [24]
2 years ago
5

Need help with this please thanks

Chemistry
1 answer:
kolbaska11 [484]2 years ago
5 0

Answer: 1. 2H_2+O_2\rightarrow 2H_2O

2. P_4+3O_2\rightarrow 2P_2O_3

3. N_2+3H_2\rightarrow 2NH_3

4. 2K+Cl_2\rightarrow 2KCl

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

The given equations are balanced as:

1. 2H_2+O_2\rightarrow 2H_2O

2. P_4+3O_2\rightarrow 2P_2O_3

3. N_2+3H_2\rightarrow 2NH_3

4. 2K+Cl_2\rightarrow 2KCl

You might be interested in
Calculate the density of the items below. (D = M/V)<br> 1) M = 15g V = 5.0ml *
grin007 [14]

Answer:

<h3>The answer is 3.0 g/mL</h3>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume} \\

From the question

mass = 15 g

volume = 5 mL

We have

density =  \frac{15}{5}  \\

We have the final answer as

<h3>3.0 g/mL</h3>

Hope this helps you

5 0
2 years ago
How do you solve this? I am so confused. This is Chemistry 1 HON and its dimensional analysis. It would help me so much if someo
Mekhanik [1.2K]

1. 150 yards

2. 4320

3. 144

4. 2688

4 0
3 years ago
The actual yield of a certain reaction is 44.0 g, while the theoretical yield is 50.0 g. Calculate the percent yield.
Goshia [24]
Percent yield represents to what extent the reaction runs to completion. In this, the theoretical yield is 50 grams (100% completion).

To calculate percent yield, divide the actual by the theoretical. In doing so, the percent yield is 88% (44/50).
3 0
3 years ago
Read 2 more answers
Review this balanced neutralization reaction: HBr + KOH KBr + H2O. Which substance is the base?
Olegator [25]
B KOH
I would say this is the base for the compound substance
8 0
3 years ago
Beryllium Plus flourine
larisa [96]

Be is +2 charge

F is -1 charge

It is

BeF2

8 0
3 years ago
Other questions:
  • The volume of 400mL chlorine gas at 400mm Hg is decrease to 200mL at constant tempature. What is the new gas pressure?
    5·1 answer
  • Please answer as many as you can please put the number next to the question thank you guys so much
    8·1 answer
  • When a substance changes from one phase to another, which of the following occurs?
    9·1 answer
  • Write out the following statements in balanced chemical reactions. Specify states of matter for each substance. Watch out for el
    5·1 answer
  • What is an extensive property? *
    11·1 answer
  • How does the experiment with the marshmallow and the syringe prove that air is matter?
    5·1 answer
  • The first measurements of the sea depth was made in 1840 in the centra south of Atlantic, where a plummet was lowered 2425 fatho
    12·1 answer
  • Write a complete balanced redox reaction, wherein electron(s) are transferred between Coenzyme Q and lipoic/dihydrolipoic acid,
    15·1 answer
  • Find the sum of the<br> following:<br> 89.001 + 0.0001 + 348.4 +<br> 49166
    8·2 answers
  • Chemistry mixes 108 g of O2, with 232 L of C3Hg at STP. How many grams of H2O will be produced? The balanced equation for this r
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!