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
WITCHER [35]
3 years ago
5

100 POINTS!!! :0! What two things do all chemical reactions have in common (tick 2)? 1. They create new substances- the substanc

es you end up with are different from the ones you started with. 2. They do not create new substances- the products at the end look exactly the same as the reactants at the start. 3. They are reversible- you can get back the substances that you started with at the end of the reaction 4. They are irreversible- at the end of the reaction, you can't get back the substances you started with
Chemistry
2 answers:
dusya [7]3 years ago
7 0

Answer:

1 and 4

Explanation:

Dovator [93]3 years ago
3 0

Answer:

Explanation:

The answer is 1st and 4th point

hope this helps

plz mark it as brainliest!!!!!!

You might be interested in
I need to repost cause I did it wrong and the price was blank, but imma mark BRAINLIEST on this one :D
k0ka [10]

Explanation:

I'm pretty sure 1. yes 2. no and 3. it might be yes but I'd just put a maybe

5 0
3 years ago
Help me with 4,5 plz
Helen [10]
The answer to 4 is A.                                              
The answer to 5 is C.
7 0
3 years ago
When a radioactive sample decays for 2 half-lives the amount remaining will be ____ of the original?
mash [69]
1/4 of the original.
4 0
3 years ago
3. How many moles of NaCl are present in 6000. La 1.5 M NaCl solution?
Leno4ka [110]

Answer:

Option A (9.0) is the correct alternative.

Explanation:

The given values are:

Molarity,

= 1.5 M

Volume,

= 6000 mL

or,

= 6 L

As we know,

⇒ Molarity=\frac{Moles}{Volume}

or,

⇒ The \ moles \ of \ NaCl=Molarity\times Volume

By putting the values, we get

                                     =1.5\times 6

                                     =9 \ mol

7 0
3 years ago
PLEASE HELP! MAJOR TEST GRADE! :(
Goshia [24]

Answer:

c

Explanation:

7 0
3 years ago
Other questions:
  • The energy released by a nuclear reaction results primarily from the
    14·2 answers
  • What was the history and use of the periodic table?
    14·1 answer
  • Which colligative property is employed when salt is put on an icy sidewalk to melt ice?
    6·2 answers
  • Why is distilled water added to the crucible after igniting the magnesium metal?
    7·2 answers
  • As the number of effective collisions between reacting particles increases, the rate if a chemical reaction:
    14·1 answer
  • The thin muscular wall that separates the right side of the heart from the left side is called the​
    7·1 answer
  • The dehydration of the alcohol functional group is a widely used reaction in organic chemistry. The mechanism is generally accep
    6·1 answer
  • Do your answers to the previous questions satisfy
    14·1 answer
  • It takes Mark two hours to ride his bike 12 miles to his grandma’s house. What is Mark’s speed in miles per hour? I need an answ
    14·2 answers
  • Without using Appendix B, predict the sign of ΔS° for(b) KBr(s)→ KBr(aq)
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!