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
ANEK [815]
3 years ago
5

Question 10 (1 point)

Chemistry
1 answer:
choli [55]3 years ago
4 0
Answer
Manganese II oxide
Thank you
You might be interested in
consider the substance:carbon dioxide, gold, bronze, alcohol, iron, and, oxygen.from the list , select the substances that :(1)
lbvjy [14]

Answer:

Oxygen

Explanation:

 · Air decolorization makes use of chromophores’ instability on oxygen to decolorize the oil by air-oxidizing pigments. For example, the carotenoid and chlorophyll in the oil are very unstable because of their structure, which is easy to be discolored under the action of oxygen. However, air decolorization leads to thermal oxidation of the oil, too.

5 0
3 years ago
For the reaction N2(g) + 2H2(g) → N2H4(l), if the percent yield for this reaction is 100.0%, what is the actual mass of hydrazin
barxatty [35]

Answer:

53.6 g of N₂H₄

Explanation:

The begining is in the reaction:

N₂(g) + 2H₂(g) → N₂H₄(l)

We determine the moles of each reactant:

59.20 g / 28.01 g/mol = 2.11 moles of nitrogen

6.750 g / 2.016 g/mol = 3.35 moles of H₂

1 mol of N₂ react to 2 moles of H₂

Our 2.11 moles of N₂ may react to (2.11 . 2) /1 = 4.22 moles of H₂, but we only have 3.35 moles. The hydrogen is the limiting reactant.

2 moles of H₂ produce at 100 % yield, 1 mol of hydrazine

Then, 3.35 moles, may produce (3.35 . 1)/2 = 1.67 moles of N₂H₄

Let's convert the moles to mass:

1.67 mol . 32.05 g/mol = 53.6 g

4 0
3 years ago
(14.1.50) 0.03 mol of helium are enclosed in a cylinder with a piston which maintains a constant pressure in the helium. Initial
icang [17]

Answer:

a) 0.210 j /k

b) 0.032 j/k

Explanation:

Find the attachment for solution

3 0
3 years ago
The tip of a match is ignited as it is struck against the matchbox. Why is this a chemical change?
LUCKY_DIMON [66]
The answer is A, because of the chemical reaction taking place color can change (as in this case). Hope it helps!
5 0
3 years ago
Read 2 more answers
I need help with number 4 I mean k think I'm right
adell [148]
Its b because it explains it better than a waterfall does
5 0
3 years ago
Other questions:
  • A substance has a heat of fusion of 155 J/g. How many joules of energy are required to be removed in order to freeze a 10.0 g sa
    13·1 answer
  • What is an isotope? a. A form of an element with a different number of electrons c. A form of an atom with a different amount of
    9·1 answer
  • A circuit is shown in the picture above. Energy is transferred first from the battery to the circuit wire and then from the circ
    14·2 answers
  • An element is matter that is composed of one type of (atom/quark). 8. the unit of measurement used for atomic particles is the (
    15·1 answer
  • 3. Which element is most important for growing crops?
    13·1 answer
  • Why is sodium chloride not a mixture?<br> Why is sodium chloride a compound?
    12·1 answer
  • What is particles in chemistry?
    13·1 answer
  • Ill give u brainliest help asap!
    8·2 answers
  • 3. The picture below is an example of a _________ _________. (Answer is 2 words)
    14·1 answer
  • One central them of Jesus' message was the kingdom of _______?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!