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Sholpan [36]
3 years ago
5

Which of the following are testable?

Chemistry
2 answers:
GREYUIT [131]3 years ago
4 0
Where’s the answers ?
jeyben [28]3 years ago
3 0

you forgot the well answers

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Need help on these please and thank you
Snowcat [4.5K]

Statement:

The best way to measure the mass of an orange is to use a balance. You put the orange and the mass pieces in the same cup on the balance and find out how many centimeters it is. The mass of my orange was 145.

Explanation:

Problem 1

The student has not done a good job in measuring the weight of the orange. In fact, the has complicated his simple problem.

Reasons:

  • Using the mass pieces and the cup to find the weight of the orange is wrong approach.

     He can easily place the orange on the balance and read off the weight.

  • Centimeters is a unit of length. What length is he measuring and recording?

    The unit of weight is in newtons(N).

  • Mass is not read from a balance. A balance gives the weight of substance. Mass is different from weight.

Problem 2

Rewriting to paragraph to correct the errors:

The best way to measure the mass of an orange is to use a balance. You put the orange on the balance and find out how many newtons it is. The weight in newtons can be converted to mass in kilogram. The mass of my orange will be 145kg.

Learn more:

force brainly.com/question/11869811

#learnwithBrainly

6 0
3 years ago
Which tool is used to detect yellow light rays emitted by stars from outer space?
elixir [45]
Answer A

x-ray optical telescope.

hope this helps!.

3 0
3 years ago
5 Which polyatomic ion is found in the compound represented by the formula NaHCO3?
pav-90 [236]
Hydrogen Carbonate, or HCO3.
7 0
4 years ago
What is the job of these macromolecules ​
Ray Of Light [21]

Answer:

<u>When small organic molecules bind together, they form larger molecules called biological macromolecules.</u>Biological macromolecules are important cellular components and perform a wide array of functions necessary for the survival and growth of living organisms. The four major classes of biological macromolecules are carbohydrates, lipids, proteins, and nucleic acids.

(i hope this helps)

5 0
4 years ago
Does a flame always give off heat
AlekseyPX
No a flame doesn't always give heat because sometimes fire can burn but it doesn't have heat
4 0
3 years ago
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