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
Sergio [31]
3 years ago
13

PLS HELP ASAP ON BOTH

Chemistry
2 answers:
NNADVOKAT [17]3 years ago
7 0
19. Mesosphere I think

20. True not sure though
lesya692 [45]3 years ago
3 0

Answer:

mesosphere

I hope this helps a little bit.

You might be interested in
A gas occupies a volume of 30.0L, a temperature of 25°C and a pressure of 0.600atm. What will be the volume of the gas at STP?​
Shalnov [3]

Answer:

=16.49 L

Explanation:

Using the equation

P1= 0.6atm V1= 30L, T1= 25+273= 298K, P2= 1atm, V2=? T2= 273

P1V1/T1= P2V2/T2

0.6×30/298= 1×V2/273

V2=16.49L

5 0
3 years ago
On a periodic table, element names are represented by:
alina1380 [7]

Answer: Symbols

Explanation:

4 0
3 years ago
The electromagnetic force is
Debora [2.8K]
The electromagnetic force is attractive for unlike charges and repulsive for like charges
8 0
3 years ago
Read 2 more answers
PLEASE HELP ASAP!
choli [55]

Answer:

\large \boxed{\text{D. 710 g}}

Explanation:

1. Calculate the molar mass of Na₂SO₄

\begin{array}{ccc}\textbf{Atoms} &\textbf{M}_{\textbf{r}} & \textbf{Mass/u}\\\text{2Na} & 23 & 46\\\text{1S} & 32 & 32\\\text{4O}&16 & 64\\&\text{TOTAL =} & \mathbf{142}\\\end{array}

The molar mass of Na₂SO₄ is 142 g/mol.

2. Calculate the moles of Na₂SO₄

\text{Moles of Na$_{2}$SO}_{4} = \text{2.5 L solution} \times \dfrac{\text{2.0 mol Na$_{2}$SO}_{4}}{\text{1 L solution}} = \text{5.0 mol Na$_{2}$SO}_{4}

3. Calculate the mass of Na₂SO₄

\text{Mass of Na$_{2}$SO}_{4} = \text{5.0 mol Na$_{2}$SO}_{4} \times \dfrac{\text{142 g Na$_{2}$SO}_{4}}{\text{1 mol Na$_{2}$SO}_{4}} = \text{710 g Na$_{2}$SO}_{4}\\\\\text{You need } \large \boxed{\textbf{710 g}} \text{ of Na$_{2}$SO}_{4}

6 0
3 years ago
Most of the elements of which region of the periodic table are located directly to the right of the metalloids?
scZoUnD [109]

Answer:

im sorry for being mean goodbye im get the real answer

Explanation:

7 0
3 years ago
Other questions:
  • What is the ∆G for the following reaction under standard conditions (T = 298 K) for the formation of NH4NO3(s)? 2NH3(g) + 2O2(g)
    11·2 answers
  • How are temperature and heat related
    6·1 answer
  • Can a mini fridge still be used if you break the freezer
    9·1 answer
  • What is synthesis reation?​
    6·1 answer
  • A sports car and a fully loaded semi truck pull side by side at a red light. Using your knowledge of acceleration, predict which
    12·1 answer
  • If 3.0 liters of oxygen gas react with excess carbon monoxide at STP, how many liters of carbon dioxide can be produced under th
    6·2 answers
  • The 235U isotope (atomic mass = 235.00) undergoes fission when bombarded with neutrons. However, its natural abundance is only 0
    8·1 answer
  • Which is the following summaries expresses the main points of the best passages
    6·2 answers
  • The table shows the average distance between the molecules of a substance in the solid, liquid, and gaseous states.
    10·1 answer
  • I'll give brianliest if correct .
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!