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
Ede4ka [16]
3 years ago
15

Pls help really need it pls

Chemistry
1 answer:
rosijanka [135]3 years ago
4 0
The correct answer is the first one i think
You might be interested in
How does sleeping help us maintain homeostasis?
hjlf

Answer:

Sleep homeostasis denotes a basic principle of sleep regulation. A sleep deficit elicits a compensatory increase in the intensity and duration of sleep, while excessive sleep reduces sleep propensity

Explanation:

:]

7 0
3 years ago
Can a combination reaction be a redox reaction ?
saul85 [17]

Answer:

Yes A redox reaction can be a combination reaction.

Two elements are mixed in a combination reaction to produce a single product.

Explanation:

Example: water formula

2H2 + O2 → 2H2O

Oxygen is reduced in this reaction when electrons are transferred from hydrogen to oxygen and hydrogen is also oxidized since oxygen from hydrogen accepts electrons. Oxygen is the oxidizing agent and hydrogen is the reducing agent.

2H2 + O2 → 2H2O

4 0
3 years ago
1) Find the mass of 2.7 moles of NaCl.
sukhopar [10]

Answer:

157. 788 grams

Explanation:

number of moles = mass/molar mass.

hence the mass = molar mass × number of moles

m = 58.44 × 2.7 = 157.788 grams

5 0
2 years ago
All are true about how does gravity aid erosion except?
Sunny_sXe [5.5K]

Answer:

I think it is b

Explanation:

4 0
3 years ago
Read 2 more answers
Enzymes are proteins that speed up chemical reactions in the body how do they work
Mila [183]
The answer would be D, Enzymes<span> are soluble </span>protein<span> molecules that can </span>speed up chemical reactions<span> in cells. </span>These reactions<span> include respiration, photosynthesis and making new </span>proteins<span>. For this reason </span>enzymes<span> are sometimes called biological catalysts.</span>
5 0
4 years ago
Other questions:
  • How many elements make up this chemical compound CO2FeHN3CoBNa2
    15·1 answer
  • Write the molecular formula for maltose by adding the correct subscripts. C H O
    5·1 answer
  • How much is 3.5 gallons in cups
    9·1 answer
  • What investigations never involve hypotheses?
    5·2 answers
  • evidence of a chemical change includes A) change in size B) change in color C) change in shape D) change in weight
    10·1 answer
  • Balance it by oxidation number method:Zn +HNO3----Zn(NO3)2+NO+H2O​
    10·2 answers
  • Which of the following is accurate about the octet rule? -please explain your reasoning for answer
    8·1 answer
  • Which reason best explains why metals are malleable
    5·2 answers
  • Name the gases that mostly compose the atmosphere.
    11·1 answer
  • Calculate the ΔHrxn for the following
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!