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-BARSIC- [3]
3 years ago
11

How much energy is needed to heat 45 g of water from 15C to 75C?

Chemistry
1 answer:
defon3 years ago
5 0

25.0°C is the exact amount of energy needed to heat 45 g of water, anymore than that can cause the water to start boiling

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What is the total number of atoms in a molecule of ch 3 oh?
algol13
Number of Atoms in Methanol are calculated as,

Write chemical formula of Methanol,

                                                      CH₃-OH

Find out Subscripts:
                                There is only one subscript (₃) written after Hydrogen, it means there are 3 Hydrogen atoms attached to Carbon atoms.

Add all atoms in molecule:
                                           Carbons  =   1
                                       Hydrogens  =   4
                                          Oxygens  =   1
                  Total Atoms                        ______
                          
                                                               6 Atoms
6 0
3 years ago
Read 2 more answers
Which of the following four senses experience transduction?
maw [93]

Answer:

sight, smell, hearing and taste

Explanation:

7 0
3 years ago
why do you think the purple cabbage indicator used in this experiment is called "red cabbage"? where is it typically used in foo
tatiyna

Answer:

Red cabbage juice contains a natural pH indicator that changes colors depending on the acidity of the solution. The pigment in red cabbage that causes the red color change is called flavin (an anthocyanin). ... At a lower pH, more hydrogen ions are in solution, and therefore the solution is acidic

Actually I don't know but I tried so I hope it helped u!

4 0
3 years ago
Which of the following is one way that land contributes to production?
Phantasy [73]

Answer : Option B) Energy from the environment fuels production.

Explanation : Environmental fuels can be produced from lands and contribute towards production. The land can contribute for the production of a Biogas plant and help in generating energy from the plant. It uses mainly decaying matter and household wastes which are decomposed and then produce methane gas is then connected to the household kitchens.

8 0
3 years ago
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What chemical changes happen at school
kykrilka [37]

Burning, cooking

Explanation:

Chemical changes that happens in school are:

Cooking of meals

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Rusting of iron used in construction

  • A chemical change is a change that produces new kinds of substances.
  • These changes are usually accompanied by energy and mass changes.
  • Most of such changes are not reversible.

Chemical changes are driven by change in chemical properties of matter.

In a school, iron components might begin to rust. This is a chemical change.

learn more:

Chemical change brainly.com/question/9388643

#learnwithBrainly

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