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
jolli1 [7]
3 years ago
12

There is nothing that you can do to conserve energy. True or False

Chemistry
2 answers:
Firdavs [7]3 years ago
6 0
I am going to say it is false.
VMariaS [17]3 years ago
5 0

The law of conservation of energy is a law of science that states that energy<span> cannot be created or destroyed, but only changed from one form into another or transferred from one object to another.</span>
You might be interested in
What would be an evidence of release in energy?
shusha [124]
A heater letting of heat is an example of release of energy. Please comment if you have any questions about my answer.<span />
6 0
3 years ago
The combustion of 135 mg of a hydrocarbon produces 440 mg of CO2 and 135 mg H2O. The molar mass of the hydrocarbon is 270 g/mol.
NeX [460]

Answer:

Molecular formula = C20H30

Explanation:

NB 440mg = 0.44g, 135mg= 0.135g

From the question, moles of CO2= 0.44/44= 0.01mol

Since 1 mol of CO2 contains 1mol of C, it implies mol of C = 0.01

Also from the question, moles of H2O = 0.135/18= 0.0075mole

Since 1 mol of H2O contains 2mol of H, it implies mol of H = 0.0075×2= 0.015 mol of H

To get the empirical formula, divide by smallest number of mole

Mol of C = 0.01/0.01=1

Mol of H = 0.015/0.01= 1.5

Multiply both by 2 to obtain a whole number

Mol of C =1×2 = 2

Mol of H= 1.5×2 = 3

Empirical formula= C2H3

[C2H3] not = 270

[ (2×12) + 3]n = 270

27n = 270

n=10

Molecular formula= [C2H3]10= C20H30

5 0
3 years ago
What does a hygrometer measure?
gogolik [260]

Answer:

  • humidity

Explanation:

Hygrometer, instrument used in meteorological science to measure the humidity, or amount of water vapour in the air. Several major types of hygrometers are used to measure humidity.

3 0
3 years ago
Read 2 more answers
The element which has atomic number 17 is considered from... A. Metals B. Non-metals C. Noble gas D. No correct answer Please ex
jeyben [28]

Answer:

B. Non-metals

Explanation:

The element with the atomic number of 17 is Cl.

Chlorine belongs to the group 7 in the periodic table. It is a non metal.

Correct option: B. Non-metals

7 0
3 years ago
A solution that contains a small amount of salt and a large amount of water is said to be a?
artcher [175]
The answer is dilute. A dilute salt solution contains a small amount of salt with high water concentration while a concentrated salt solution has a large amount of salt with a lower water concentration. Salt is inorganic hence it is not monounsaturated, which is a term related to organic compounds. The salt is unable to dissolve anymore in a saturated salt solution, leaving the undissolved salt at the bottom and this is not the case here since we only have a small amount of salt. 
6 0
3 years ago
Other questions:
  • The sum of the numbers of protons and neutrons in a nucleus of an atom answer
    10·1 answer
  • A sample of carbon-12 has a mass of 6.00 g. How many atoms of carbon-12 are in the sample?
    7·2 answers
  • Washing soda, a compound used to prepare hard water for washing laundry, is a hydrate, which means that a certain number of wate
    14·1 answer
  • What is the balanced form of the chemical equation shown below?
    12·1 answer
  • Any one from Michigan on here????
    13·2 answers
  • Ag + HCl --&gt; ?
    13·1 answer
  • Does SiF4 have polar covalent bonds?
    6·1 answer
  • How are chemical bonds formed?
    8·1 answer
  • Please Help Me Answer Numbers 7, 9, 10, and 11!
    5·1 answer
  • (01.07 LC)
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!