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
Ganezh [65]
3 years ago
6

What explains the fact that no machine is 100 percent efficient?

Chemistry
1 answer:
nydimaria [60]3 years ago
4 0
Because some machine might not work and would give you the wrong answer
You might be interested in
Which part of an atom has a negative electric charge?
kherson [118]

Answer: A:electrons

Explanation:

4 0
3 years ago
Read 2 more answers
Which analogy most accurately describes quantized energy levels?
grigory [225]

Answer:garden steps that get closer together the further they are from teh ground

Explanation:

Quantized energy levels are discrete and get closer together the further they are from the nucleus

6 0
3 years ago
A sample contains 1.29×1022 atoms of Cs. Calculate the amount of Cs.
tester [92]

There are 0.0214 mol Cs in 1.29×10²² atoms Cs.

Use <em>Avogadro’s number</em> to convert atoms of Cs to moles of Cs.

Moles of Cs = 1.29×10²² atoms Cs × (1 mol Cs /6.022 × 10²³ atoms Cs) = 0.0214 mol Cs

4 0
3 years ago
The diameter of carbon atom is.000000000154m. What is this expressed in scientific notation.
Margarita [4]

1.54 x 10^-10

thats the answer

5 0
3 years ago
A gas at a constant temperature of 300. K, a pressure of 200. kPa, and a volume of 15.0L was decreased to a volume of 10.0 L. Wh
Vesnalui [34]

Answer:

300 kPa

Explanation:

P2=P1V1/V2

You can check this by knowing that P and V at constant T have an inverse relationship. Hence, this is correct.

3 0
3 years ago
Other questions:
  • What is the mass of 1.82 moles of lithium carbonate?
    13·2 answers
  • How much HCL exists in 172 mL of 0.95 M solution of HCL? Answer in units of mol.
    7·1 answer
  • A chemical reaction gives off 1,500 kj of heat energy. about how many calories is this? (1 calorie = 4.18 joules)
    8·2 answers
  • What is the difference between h+ concentration in an acidic solution such as lemon juice (ph 2) and a basic solution such as ho
    8·1 answer
  • Bay 101: Wetlands POST Lesson Review
    11·1 answer
  • To prepare 250 grams of an aqueous KI solution that is 24.0% by weight of this solute how many grams of water and how many grams
    11·1 answer
  • Is water wet? If so how
    5·2 answers
  • How are animal-like and plant-like protists are similar and different?​
    14·2 answers
  • To answer this question, use the hydrazine–nitrogen tetroxide rocket fuel reaction: 2N2H4+N2O4→3N2+4H2O You are given 96 g of N2
    10·1 answer
  • Why does lithium form a 1 ion?.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!