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
Vitek1552 [10]
2 years ago
15

Please help ASAP. No one could not help me with this question.

Chemistry
1 answer:
Tanya [424]2 years ago
3 0

Answer:

sorry

Explanation:

I don't know the answer this is really confusing but I am really sorry you have to do this.

You might be interested in
Which substance can not be broken down by a chemical change?
frosja888 [35]
(4) Zirconium 
This element is often used in the chemical production field, and as implants due to its high chemical resistance and stability. 
8 0
3 years ago
How many valence electrons are in N2O? SeCl2? PBr3?
8090 [49]
Here is the answer for the three of them
<span>N20 = 16 e-
</span><span>SeCl2 =20
</span><span>PBr3 = 26 
Remember that t</span><span>o find the valence electrons in an atom you need to identify what group the element is in. An element in group 1A has 1 valence electron. If the element is in group 2A, then it has two valence electrons.</span>
5 0
2 years ago
A gas occupies a volume of 40.0 milliliters at 20 c if the volume is increased too 80.0 milliliters at constant pressure, the re
Troyanec [42]
Charles law gives the relationship between temperature and volume of gases. It  states that the volume of gas is directly proportional to temperature at constant pressure. 
V / T = k 
where V - volume and T - temperature in Kelvin and k - constant 
\frac{V1}{T1} =  \frac{V2}{T2}
where parameters for the first instance are on the left side and parameters for the second instance are on the right side of the equation 
T1 - 20 °C + 273 = 293 K
substituting these values in the equation 
\frac{40.0 mL}{293 K}  =  \frac{80.0 mL}{T}
T = 586 K
temperature in celsius = 586 K - 273 = 313 °C
new temperature is 313 °C
8 0
3 years ago
PLEASE PLEASE PLEASE HELP ME
Neko [114]
In descending order from top:

E
F
D
A
C
B

All you really need to do is remember the symbols of each, and you’ve got it.
8 0
2 years ago
Read 2 more answers
Count the total number of atoms in the chemical formula 5H2O2
SVEN [57.7K]

Answer:

20 atoms

Explanation:

There are 4 in H2O2 because of 2 hydrogens and 2 oxygens.

Then, multiply by 5 because the coefficient is 5, therefore there are 5 H2O2 molecules.

5 x 4 = 20

5 0
3 years ago
Other questions:
  • The table below gives the atomic mass and relative abundance values for the three isotopes of element M.
    10·1 answer
  • What subatomic particle has negligible mass and travels around outside the nucleus?
    12·1 answer
  • ___AIBr3+__K--&gt;__KBr+__AI
    6·1 answer
  • CaCO3(s) + HCl → CaCl2(s) + CO2(g) + H2O(g)
    15·1 answer
  • How do valence electrons affect chemical bonding?
    11·1 answer
  • Water boils at a higher temperature than a non-polar solvent like ether because...
    6·2 answers
  • A car moved 20km East and 70km West. What is the distance?
    5·1 answer
  • What role do plants have in the movement of water through the water cycle
    14·1 answer
  • hen CO(g) reacts with O2(g) to form CO2(g) , 283 kJ of energy are evolved for each mole of CO(g) that reacts. Write a balanced t
    12·1 answer
  • Is cellphone is made from renewable resources * true or false
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!