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
Kobotan [32]
3 years ago
7

(1 point) The law of conservation of mass lets us know that in every chemical equation you have to have the same number of _____

___ on both sides of the equation. * • moles • coefficients • atoms of each element • molecules
Chemistry
2 answers:
mote1985 [20]3 years ago
5 0
Atoms of each element is the answer
guapka [62]3 years ago
5 0
Atoms of each element 
You might be interested in
Worth 15 points!!! Choose ALL of the examples of a heterogeneous mixture, where the components are unevenly spread. THIS IS A MU
ycow [4]

Answer:

A

B

C

Explanation:

A B and C are heterogeneous because they don’t have all the same components throughout. D is homogeneous because kool aid dissolves into the water.

5 0
2 years ago
NH4NO3, whose heat of solution is 25.7 kJ/mol, is one substance that can be used in cold pack. If the goal is to decrease the te
makvit [3.9K]

Answer:

There are necessaries 35,2g of NH₄NO₃ per 100,0g of water to decrease the temperature of the solution from 25,0°C to 5,0°C

Explanation:

To decrease the temperature of the solution there are necessaries:

4,184J/g°C×(5,0°C-25,0°C)×(100,0g+X) = -Y

8368J + 83,68J/gX = Y <em>(1)</em>

Where x are grams of NH₄NO₃ you need to add and Y is the energy that you need to decrease the heat.

Also, the energy Y will be:

Y = 25700J/mol×\frac{1mol}{80,043g}X

Y = 321J/g X <em>(2)</em>

Replacing (2) in (1)

8368J + 83,68J/g X = 321J/g X

8363J = 237,32J/gX

<em>X = 35,2g</em>

<em />

Thus, there are necessaries 35,2g of NH₄NO₃ per 100,0g of water to decrease the temperature of the solution from 25,0°C to 5,0°C

I hope it helps!

6 0
3 years ago
What is the electron configuration for magnesium (Mg)?
AveGali [126]

Magnesium has atomic no 12

Electronic configuration given by

  • 1s²2s²2p⁶3s²

Or

  • [Ne]3s²
6 0
1 year ago
Why do mentos react to coke? Also is this a chemical or physical reaction?
navik [9.2K]
Mentos reacts to coca-cola because of the sugars and then they expand which causes the soda to explode out of the open container. this is a chemical reaction because it cause the sugars to expand which you can't see happen.
5 0
3 years ago
Read 2 more answers
What is the IUPAC name of KNO3<br>​
Tasya [4]
Answer: potassium nitrate


hope this helps
4 0
3 years ago
Read 2 more answers
Other questions:
  • Chlorine gas (cl2) forms when two chlorine atoms share an electron. what type of bonding is present in chlorine gas?
    7·2 answers
  • All forms of crystalline carbon have the same structure. True or False
    13·1 answer
  • Characteristics of the fungus kingdom (all of them)
    10·1 answer
  • Boron fluoride obeys the octet rule.<br><br> True or false
    13·2 answers
  • If the pH is 9, what is the concentration of hydroxide ion?
    9·1 answer
  • Which of the following prefixes would show up in the name for SF6? Hexa, penta, tetra, hepta, and mono
    10·1 answer
  • An unbalanced chemical equation is shown: 2NaN3 → 2Na + N2 Which of the following statements explains why the equation is not ba
    11·2 answers
  • State any two mixture that can separated using the method? ​
    12·1 answer
  • Identify the structure below.
    7·1 answer
  • A CHM 111 student completing Part B recorded the mass of several pieces of dry metal as
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!