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
JulsSmile [24]
2 years ago
14

Help for this practice work

Chemistry
1 answer:
allochka39001 [22]2 years ago
8 0

Answer:

It's the third option.

Explanation:

In order for the chemical equation to be correctly it needs the same number of atoms of each element on both sides of the equal sign

You might be interested in
The formula for a chemical reaction is given. 2Na + 2H2O → 2NaOH + H2 Which of the following describes this reaction? Group of a
professor190 [17]
It is a reaction between an element and a compound that results in a different element and compound
5 0
3 years ago
Name this compound please ​
jasenka [17]

Answer:

Ethanol

Explanation:

2 C atoms and a single OH group.

Formula: C2H5OH

4 0
4 years ago
PLEASE HELP WILL GIVE 20PTS AND WILL MARK BRAINLIEST FOR RIGHT ANSWER!!!
Marysya12 [62]

Answer:

C) 0.457

Explanation:

The ratio between O2 and H2O is 1:2 according to the balanced equation. You can find how many moles is O2 by : 5.12/22.4 = 0.22857 ( 1 mole = 22.4 litters)

Moles of H2O will be 0.22857 * 2 = 0.457142.

Therefore answer C)

7 0
3 years ago
If you have studied the chemistry of fats can you identify the end arrangement found in fatty acids as well as amino acids? What
White raven [17]
Answers:
1) - COOH
2) carboxyl group

The organic acids contain the carboxyl group: - COOH.

Fats are structures composed by fatty acids. Fatty acids are long aliphatic chains with a carboxyl group at the end.

Aminoacids are chains that contains amine group (NH2) at one end and the carboxyl group at the other end.

Then both aminoacids and fatty acids contain the carboxyl group (-COOH) at one end.
8 0
4 years ago
Boyle's Law states that when a sample of gas is compressed at a constant temperature, the pressure P and volume V satisfy the eq
ad-work [718]

Answer:

-75 cm^3/min

Explanation:

Given from Boyle's law;

PV=C

From product rule;

VdP/dt + PdV/dt = dC/dt

but dC/dt = 0, V= 500 cm^3, P= 200kPa, dP= 30kPa/min

PdV/dt = dC/dt - VdP/dt

dV/dt = dC/dt - VdP/dt/ P

substituting values;

dV/dt = 0 - (500 * 30)/200

dV/dt = -75 cm^3/min

5 0
3 years ago
Other questions:
  • The average kinetic energy of the atoms that make up a substance which is changing from a liquid to a solid is _____________.dec
    8·1 answer
  • A substance containing atoms of two or more different elements chemically bonded together is called what
    14·1 answer
  • What change would occur in the kinetic energy of vapor if a container of vapor is placed at 0 Kelvin?
    9·2 answers
  • Select the single best answer. When 2-heptyne was treated with aqueous sulfuric acid containing mercury(II) sulfate, two product
    7·1 answer
  • An exothermic reaction has a positive enthalpy (heat) of reaction.(T/F)
    6·2 answers
  • Which is an effect of short term expsure to stress​
    14·1 answer
  • 2.<br> _______ properties depend on the amount of<br> matter present
    15·1 answer
  • Which of the following body responses help maintain homeostasis by
    5·2 answers
  • A goup of cells that work together to perform a specific function.
    13·1 answer
  • How do plants respond to seasonal changes
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!