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
ludmilkaskok [199]
3 years ago
12

PLZ HELP ME..ITS MY TEST

Chemistry
2 answers:
Sati [7]3 years ago
8 0

Answer: Oxidizing Agent

Explanation: When Cr is reduced (gains electrons), it is oxidizing the other element (removing its electrons) so it is the oxidizing agent.

artcher [175]3 years ago
4 0
Oxidizing agent would be the best answer choice i would choose
You might be interested in
How much heat is released when 24.8 g of ch4 is burned in excess oxygen gas?
balu736 [363]

The given question is incomplete. The complete question is:

How much heat is produced when 24.8 g of CH_4 is burned in excess oxygen gas

Given: CH _4
+2O_2\rightarrow CO_2+2H_2O  ΔH= −802 kJ.

Answer: 1243.1 kJ

Explanation:

Heat of combustion is the amount of heat released on complete combustion of 1 mole of substance.

Given :

Amount of heat released on combustion of  1 mole of methane = 802 kJ kJ/mol

According to avogadro's law, 1 mole of every substance occupies 22.4 L at NTP, weighs equal to the molecular mass and contains avogadro's number 6.023\times 10^{23} of particles.

1 mole of CH_4 weighs = 16 g  

Thus we can say:  

16 g of CH_4 on combustion releases heat = 802 kJ

Thus 24.8 g of CH_4 on combustion releases =\frac{802}{16}\times 24.8=1243.1kJ

Thus heat released when 24.8 g of methane is burned in excess oxygen gas is 1243.1 kJ

4 0
3 years ago
Which statement describes the BEST example of animals avoiding competition?
Svetlanka [38]

Answer:

D

Explanation:

If the deer leave the forest then they are avoiding compotation

4 0
2 years ago
Read 2 more answers
What is the charge on an atom after it gains two electrons during the formation of a bond?
vekshin1

Answer:

two negative charges is the answer of your question

8 0
2 years ago
If 1,079.75 Joules of heat are added to 77.75 grams of water, by how many degrees Celsius would the water increase? Assume water
djyliett [7]

Answer:

If 1,079.75 Joules of heat are added to 77.75 grams of water, by 3.32 degrees Celsius the temperature of  water will increase

\Delta T=3.32 C^{0}

Explanation:

q = mC\Delta T

Here , q = heat added / removed from the substance

m  = mass of the substance taken

\Delta T = Change in temperature

C = specific heat capacity of the substance

In liquid state the value of C for water is :

4.18 J/gC^{0}

Given values :

q = 1079.75 J

m = 77.75 gram

Insert the value of C, m , q in the given equation

q = mC\Delta T

on transposing ,

\Delta T=\frac{q}{mC}

\Delta T=\frac{1079.75}{77.75\times 4.18}

\Delta T=3.32 C^{0}

3 0
3 years ago
A small cube of iron and a large flat sheet of iron contain the same volume. Which one will completely rust first? Explain why.
Hunter-Best [27]

The flat sheet will completely rust before the iron cube. Since they both have the same volume, the flat sheet has more surface area than the small cube. This means more particles are exposed on the flat sheet that can react in a chemical reaction.

4 0
3 years ago
Read 2 more answers
Other questions:
  • Which difection do most weather systems move in the united states
    12·2 answers
  • There are several hazards associated with the chemicals in the qualitative analysis experiment. for each chemical, identify the
    15·1 answer
  • Which of the following is the correct definition of chemical energy?
    11·2 answers
  • Q #4 please help if you are sure
    5·1 answer
  • How many particles are contained in 2.75 moles of aluminum fluoride?
    11·1 answer
  • What best explains the type of energy present in the vibrating atoms of a substance
    5·1 answer
  • Y7EICqeuL helppp meeee
    5·1 answer
  • Who ever can finish the rest of the lyrics will get THE CROWN <br><br><br> Choke me like you hate me
    8·2 answers
  • Razak uses 70 W fan and a 40 w lamp for eight hours a day, Calculate the amount of energy he used in a month. NORS Analysing​
    7·1 answer
  • A loaf of bread has a green substance growing on each slice. Which of the following types of spoilage could have occurred?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!