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
larisa [96]
3 years ago
6

PLS help it is a timed test!

Chemistry
1 answer:
Mars2501 [29]3 years ago
6 0

Answer:

For question 1 the answer is D, Because the higher you are the more PE you have.

You might be interested in
How many boxes of B would be required to make 30 grams of C?
Mashutka [201]

Do you have a picture to go with it?

3 0
3 years ago
Identify the properties of a covalent substance (multiple answers )
denis-greek [22]
B. Is the answer I think
5 0
2 years ago
Read 2 more answers
A horizontal row of the periodic table is usually referred to as a ____________
zaharov [31]

the answer is period

8 0
3 years ago
Read 2 more answers
What compound has the ability to absorb large amounts of heat without itself increasing dramatically in temperature
Scorpion4ik [409]
It can be anything with a big heat capacity like water
5 0
2 years ago
Use the half-reaction method to balance the following equation in acidic solution. It is not necessary to include any phases of
yawa3891 [41]

Answer:

2H⁺ + 2MnO4⁻ + 3CN⁻ → 2MnO₂  + H₂O + 3CNO⁻

Explanation:

CN⁻   +   MnO4⁻  →  CNO⁻   +   MnO₂

In right side permangante, with Mn element has +7 as oxidation number.

In the MnO₂, Mn acts with +4.

This is the half reaction of reduction, where the Mn has gained 3 electrons.

in right side, cianide with C element has +2 as oxidation number. In the anion cianate, C acts with +4.

The oxidation number has increased in this half reaction. It's oxidation where the C, has lost 2 elecontrons

( 4H⁺ + MnO4⁻ + 3e⁻  → MnO₂  + 2H₂O ) .2

(H₂O  +  CN⁻  →  CNO⁻  + 2e⁻  + 2H⁺) .3

I have to add water, to ballance the amount of oxygens and protons to ballance H, in the opposite side

To ballance the half reactions, I have to multiply x2 (reduction) and x3 (oxidation)  so I can cancel, the electrons.

2H⁺  +  2MnO4⁻ + 3CN⁻ → 2MnO₂  + H₂O + 3CNO⁻

The electrons are now cancelled, and I can also modify water. In reactant side I have 3H₂O and in product side, I have 4H₂O so, H₂O in right side is gone so I finally obtained 1 H₂O on left. I had 8H⁺ on right, and 6H⁺ on left, so finally I obtained 2H⁺ on right, and the protons of product side are gone.

6 0
3 years ago
Other questions:
  • Which characteristic property of the substances in the solutions does thin-layer
    10·1 answer
  • Single atoms can be seen with a powerful light microscope
    15·2 answers
  • Larissa needs to make 500ml of 2.00 M NaCl. The molecular weight of NaCl is 58.44. How does she make 500ml of 2.00 M NaCl? Quest
    10·1 answer
  • A solution is prepared at 25 °C that is initially 0.23 M in propanoic acid, a weak acid with K, = 1.3 x 10^-5, and 0.42 M in sod
    6·1 answer
  • Hypothesis 2 (Particle size): If you
    6·1 answer
  • ASAP What is the main cause of any change of state?
    12·2 answers
  • A 90 lb person is prescribed a drug in the amount of 50mg/kg body per day to be delivered in 2 doses per day. Each tablet contai
    12·1 answer
  • What is hydroponics
    5·1 answer
  • Diego runs away from zombies at 11 km/h for 3 h.<br> How far does he go?
    8·1 answer
  • Radium-227 decays to a radon isotope.
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!