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
Vinvika [58]
3 years ago
6

1)

Chemistry
1 answer:
nataly862011 [7]3 years ago
5 0

Answer:

A

Explanation:

a is the right answer abi

You might be interested in
The density of water is 1.00g/ml at 4 degrees Celsius.How many water molecules are present in 2.56ml of water at this temperatur
vivado [14]

Answer:

8.55x10^22 molecules

Explanation:

From the question given, the following data were obtained:

Density = 1g/mL

Volume = 2.56mL

Mass =?

Density = Mass /volume

Mass = Density x volume

Mass = 1 x 2.56

Mass = 2.56g

Now let us convert this mass (i.e 2.56g) of water to mole

Molar Mass of H2O = (2x1) + 16 = 2 + 16 = 18g/mol

Mass of H2O = 2.56g

Number of mole of H2O=? Number of mole = Mass /Molar Mass

Number of mole of H2O = 2.56/18

Number of mole of H2O = 0.142mol

From Avogadro's hypothesis, 1mole of any substance contains 6.02x10^23 molecules. This means that 1mole of H2O contains 6.02x10^23 molecules.

Now if 1mole of H2O contains 6.02x10^23 molecules, then 0.142mol of H2O will contain = 0.142 x 6.02x10^23 = 8.55x10^22 molecules

6 0
3 years ago
Please help if you can.
IrinaVladis [17]

Answer: i thought i knew but nver mind but on the last won it is c i belive

Explanation:

3 0
3 years ago
How do we turn petroleum into energy we use?
arlik [135]

You don't "turn" it into energy; petroleum HAS stored energy (chemical energy).However, you can turn it into ANOTHER TYPE OF ENERGY; usually this is done by burning the petroleum, and using it to drive machinery.

Since burning fuels is wasteful (the efficiency is limited, in theory, to the Carnot efficiency of a heat engine), other options are being explored, such as chemical reactions in a fuel cell. But such technology is not yet used on a large scale.

7 0
3 years ago
WHAT MEASURING EQUIPMENT DID LEANNE USE TO GET HER RESULTS
julia-pushkina [17]

Answer:

Thietbi  od

Explanation:

7 0
3 years ago
Read 2 more answers
Which of the following is not an example of a chemical change? (hint:
Lena [83]

Answer:

C. Boiling water

Explanation:

Boiling water is a physical change only; the H20 molecules are moving from a liquid state to a gas state and not turning into a new substance.

3 0
3 years ago
Other questions:
  • How did Thompson know that the atom was made of more than just electron?
    15·1 answer
  • In the reaction A + B + C + D, what are the products?
    9·1 answer
  • What is the relationship between the sequence of DNA’s subcomponents and the properties of DNA? 1. The amino acid sequence along
    8·1 answer
  • Balance _Na+_H2O->_NaOH_H2
    11·2 answers
  • The chemical reaction shown above takes place in a closed system. What is true about the system while the reaction occurs? A. Th
    11·1 answer
  • What is the number of molecules present in 1.12 dm^3 of nitrogen gas at STP​
    12·1 answer
  • Gravity on Earth is 9.8 m/s2, and gravity on the Moon is 1.6 m/s2.
    8·1 answer
  • 1. Hay un gas con 700 milímetros de Mercurio de presión en 922 ml de volumen a 20 grados Celsius. Calcula la temperatura final a
    14·1 answer
  • Are all the atoms in the same plane for cyclohexanone.
    7·1 answer
  • Convert 26.02 x 1023 molecules of C2H8 to grams. Round your answer to the hundredths place.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!