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
zubka84 [21]
3 years ago
14

I need help with it please

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

Answer:

1. cells

2. energy

3. pre-existing cells by division

Explanation:

Goryan [66]3 years ago
3 0

Answer:

1. All living things have 1 or more cell

2. All organisms use a source of energy

3. All cells come form other pre-exsisting cells

Explanation:

You might be interested in
Under appropriate conditions, nitrogen and hydrogen undergo a combination reaction to yield ammonia: N 2 (g) 3H 2 (g) 2NH3 (g) I
balandron [24]

Answer:

We need 1.714 moles N2

Explanation:

Step 1: Data given

The reaction yield = 87.5 %

Number of moles NH3 produced = 3.00 moles

Step 2: The balanced equation

N2(g)+ 3H2(g) →2NH3(g)

Step 3: Calculate moles N2

For 2 moles NH3 produced we need 1 mol N2 and 3 moles H2

This means, if the yield was 100%, for 3.00 moles NH3 produced , we need 1.5 moles N2

For a 87.5 % yield:  

we need more N2, increased by a ratio of 100/87.5.

100/87.5 * 1.5 =  1.714 moles N2

5 0
3 years ago
DONT COMMENT ANY LINKS OR DONT COMMENT IF YOU DONT KNOW THE ANSWER.
Vsevolod [243]

Answer:

the first one is protons and electrons the second one is protons the third one is neutrons and the forth one is also neutron

3 0
2 years ago
Read 2 more answers
A catalyst is:
icang [17]
A catalyst is a substance that increases the rate of a chemical reaction without itself being consumed . (ans: second choice)
7 0
2 years ago
Read 2 more answers
Name four products of incomplete combustion
aalyn [17]

Answer: The products are carbon monoxide, water and carbon.

Explanation:

5 0
3 years ago
2 moles of sodium chloride are dissolved in 8 liters of water. What is its molarity (M) ?
otez555 [7]

Answer:

0.25M

Explanation:

Since molarity is defined as the amount of substance in 1 liter of a solution, and amount in chemistry refers to the number of moles, molarity can be found using the equation below:

Molarity= number of moles ÷ volume in liters

Given: number of moles= 2

Volume= 8L

∴ Molarity of NaCl

= 2 ÷8

= 0.25M

4 0
3 years ago
Other questions:
  • The following atoms are all variations of the element carbon: 12C, 13C, and 14C due to differing
    15·1 answer
  • Explain why the reactivity series must be used for single replacement reactions, but not for double replacement.
    11·1 answer
  • Many objects have both kinetic and potential energy. List two examples of these.
    15·2 answers
  • What is the overall charge on the compound, sodium hydroxide?
    14·1 answer
  • Is air a gas? If so can it become a liquid
    6·2 answers
  • The main source of energy for life on earth is ____? <br><br> Dirt <br> Nuclear radiation <br> Sun
    9·1 answer
  • Write any four properties of water.​
    14·1 answer
  • How does light interact with materials
    7·1 answer
  • 1) Draw a particle picture of liquid lemonade turning into a solid popsicle <br> BEFORE<br> AFTER
    7·1 answer
  • I REALLY NEED HELP can someone help me please I’ll mark you brainliest! :)
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!