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
Wittaler [7]
3 years ago
8

In which type of chemical reaction do two or more substances combine to form one substance?

Chemistry
2 answers:
Stella [2.4K]3 years ago
7 0
A) synthesis reaction
sveticcg [70]3 years ago
6 0
Your answer should be a
You might be interested in
describe the general trend in electronegativity as metals in group 2 on the periodic table are concidered in order of increasing
hjlf

Answer:

Electronegativity decrease in group from top to bottom

Explanation:

6 0
3 years ago
The PH of a solution of Hcl is 2.find out the amount of acid present in a litre of the solution ​
Scrat [10]

Answer:

The solution is 10^-2 or 0.01M in HCl.

Explanation:

meaning of pH is "power of hydrogen".

what is the molar concentration of a HCl solution with pH=2?

Let say pH=2

[H+]=10^-2M

HCL is a strong acid that dissociates completely:

[H+]=[HCL]

Therefore solution is 10^-2 or 0.01M in HCL.

5 0
3 years ago
Coefficients are used in a chemical formula to show the number of each element. True or False
ANTONII [103]

Answer:

The same number of each element present before the reaction takes place must also be present on the product side of the equation. Coefficients are placed in front of a chemical formula to show the number of moles of that substances that are necessary for the reaction to occur.

Explanation:

5 0
3 years ago
Values for the molar mass of nitrogen, oxygen, and nitrogen dioxide
CaHeK987 [17]

Answer:

n=N/Na

n =  \frac{8.23 \times {10}^{22} }{6.02  \times {10}^{23} }  = 0.1367 \: mol

answer: 0.14 mol

Explanation:

5 0
3 years ago
A television weights 8.50 pounds. How many grams is this?
kolezko [41]

Answer:

3,855.532 grams

Explanation:

1 pound = 453.592 grams

8.50 = ? grams

--> 8.50 * 453.592 = 3,855.532 grams.

4 0
3 years ago
Other questions:
  • The radioactive isotope z has a half-life of 12 hours. after 2 days, the fraction of the original amount remaining is
    12·1 answer
  • Four properties of water are listed.
    10·1 answer
  • Calculate the standard entropy of vaporization of ethanol at its boiling point 285 K. The standard molar enthalpy of vaporizatio
    13·2 answers
  • Why does chromium have a 3 charge? why is chromium (vi) oxide [cro3} not chromium 3 oxide?
    12·1 answer
  • Which of the following best describes a physical change?*
    15·2 answers
  • According to the equation 2Na + 2H2O mc012-1.jpg 2NaOH+H2, what mass of Na is required to yield 22.4 L of H2 at STP? (The atomic
    9·2 answers
  • Need help plz asap!!!!
    13·1 answer
  • Pls help really need it pls
    15·1 answer
  • 21. a. Describe why there is a difference in bond angles between H20 and CH4. (2 pts)
    8·1 answer
  • the reaction a(g) ⇌ b(g) has an equilibrium constant that is less than one. what can you conclude about ∆g° for the reaction?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!