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
timofeeve [1]
3 years ago
10

MULTIPLE CHOICE QUESTION

Chemistry
1 answer:
Tanzania [10]3 years ago
3 0

Answer:

the oxidation number of those elements is 2 because some of them are molecules

You might be interested in
What is the formula of calcium carbonate​
lara31 [8.8K]

Answer:

<h3>hope its help u.................</h3>

8 0
3 years ago
Read 2 more answers
HELP !!!!!!! ASAP !!!!!!!!!!!!!!
Dmitry [639]
The color changes, heat change, smell change, are a few
4 0
3 years ago
Read 2 more answers
What mass of lead (II) chloride is produced when 200.0 mL of a 0.250 M solution of sodium chloride is mixed with 200.0 mL of a 0
kow [346]

Answer:

Option d. 6.95 g

Explanation:

First of all, we state the reaction:

2NaCl + Pb(NO₃)₂ → PbCl₂ +  2NaNO₃

We determine the moles of each reactant, to state the limiting

Firstly we convert volume frm mL to L

0.200 L . 0.250M = 0.05 moles of NaCl

0.200L . 0.250M = 0.05 moles of Pb(NO₃)₂

Acording to stoichiometry we know that relation is 1:2, so the limiting reagent is the NaCl.

For 1 mol of Pb(NO₃)₂ I need 2 moles of NaCl

For 0.05 moles of Pb(NO₃)₂ I would need, the double → 0.1 moles

(We only have, 0.05 moles of NaCl)

Stoichiometry to the formed product is 2:1

From 2 moles of NaCl I produce 1 mol of PbCl₂

From 0.05 moles I would produce, the half → 0.025 moles

Let's convert the moles to mass → 0.025 mol . 278.1 g / 1mol = 6.95 g

8 0
3 years ago
A. Draw a graph that shows the relative concentration of BTB from the center of the
rosijanka [135]

Answer:

did you get the answer???

Explanation:

I really need help

6 0
2 years ago
\hy carbon used to reduce the oxide of aluminium to get the metal?
irga5000 [103]

___________________________________________________

Carbon is used to reduce the oxide of aluminium to get the metal, in case condensation happens during this process.

___________________________________________________

Hope this helps!

7 0
3 years ago
Other questions:
  • given the mass lost during the reaction when the alka seltzer is the limiting reagent and that the molar mass of carbon dioxide
    11·1 answer
  • 9. A Toyota Prius hybrid gets 21 kilometers per liter in highway driving. What is
    5·1 answer
  • Which of the following is true for all chemical reactions
    11·1 answer
  • Calculate the pH of a solution with [OH−]=1.3×10−2M. (Hint: Begin by using Kw to find [H3O+].)
    7·1 answer
  • When light cannot travel trough a material, the light has been
    12·1 answer
  • Define essential elements and how many elements are required for life
    12·1 answer
  • After 100 mL of 1.0 M NaOH are titrated into a 50 mL solution of HCl, the indicator changes color, signaling that the solution h
    14·1 answer
  • A car is traveling with an initial velocity of 15 m/s when the driver decides to go faster by accelerating at 5 m/s2 for 10 seco
    8·1 answer
  • How many atoms of aluminum would be produced from the decomposition of 53.2 g of aluminum oxide?
    7·1 answer
  • How today's pharmaceutical
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!