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
Maurinko [17]
2 years ago
14

I) Choose The Correct Answer 1. Which of the following statement correctly describes the law of conservation of mass? A/ It stat

es that the total mass of reactants is equals with the total mass of products in all chemical reaction B/ The total numbers of atoms at the left should be equal with the total numbers of atoms at the right side of arrow C/Atom is neither created nor destroyed in any chemical reaction D/ All E/ None​
Chemistry
1 answer:
spin [16.1K]2 years ago
6 0

Answer:

<em><u>D</u></em><em><u> </u></em>all

Explanation:

because law of conservation of mass describes A, B and C statement

You might be interested in
Which pure substance can be classified as an element?<br> H2<br> NO3<br> NaCl<br> H2SO4
Varvara68 [4.7K]
H2 is an elemental gas
4 0
3 years ago
Read 2 more answers
Which formula represents a polar molecule
krek1111 [17]

Answer:

the formula that represents a polar molecule is NH3 the 3 is small and toward the bottom

8 0
3 years ago
Chem help will give brainliest a student makes 255 mL of the solution of hydrochloric acid with a molarity of 0.15 M
SSSSS [86.1K]

The answer is in the photo.

3 0
3 years ago
You are instructed to create 900. mL of a 0.29 M phosphate buffer with a pH of 7.8. You have phosphoric acid and the sodium salt
Aleksandr [31]

Answer:

B and C

Explanation:

When we have to do a buffer solution we always have to choose the reaction that has the <u>pKa closer to the desired pH value</u>. When we find the pKa values we will obtain:

pKa_1=-Log[6.9x10^-^3]=2.16

pKa_2=-Log[6.2x10^-^8]=7.20

pKa_3=-Log[4.8x10^-^13]=12.31

The closer value is pKa2 with a value of 7.2. Therefore we have to use the second reaction. In which  H_2PO_4^-^1 is the <u>acid</u> and HPO_4^-^2 is the <u>base</u>. Therefore the answer for the first question is B and the answer for the second question is C.

8 0
3 years ago
What phase of matter is least common on earth
Diano4ka-milaya [45]
Plasma is the least common matter on earth 
4 0
3 years ago
Other questions:
  • Electronegativity tends to increase from left to right across a row, because
    15·1 answer
  • I need to clean the Kwik Switch thermometer between<br>each measurement.<br>O<br>True<br>False<br>​
    8·2 answers
  • Where do babies come from
    5·2 answers
  • What factors could be used to increase reaction rate? Check all that apply.
    15·2 answers
  • A neutralization reaction is taking place between solutions of phosphoric acid and calcium
    10·1 answer
  • How does the moon affect the Earth's tides?
    6·2 answers
  • HURRY PLS HELP
    8·1 answer
  • Which particle has a mass of 1.67 x 10-24 g and a charge of zero? A B electron proton neutron​
    6·1 answer
  • What kind of weather is associated with high air pressure?
    15·2 answers
  • What music was made in 1920
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!