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kiruha [24]
4 years ago
12

(c) He, Na, Mg (increasing order of melting point).​

Chemistry
1 answer:
blondinia [14]4 years ago
4 0

Answer:

Helium has melting point of - 272.2°C or - 458°F

Sodium (Na) = 650°C. or 208°C

Magnesium (Mg) = 97.79°C. Or 1202°F

Explanation:

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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
I need help on my chemistry quiz
slamgirl [31]

Answer:

it could be 25degrees c... not sure

4 0
3 years ago
Which statement best describes the liquid state of matter?
Andrei [34K]

Answer:

There are no acceptable descriptions at all on that list of choices.

5 0
4 years ago
Read 2 more answers
Which element has 32 protons in its nucleus?
BartSMP [9]

germanium  has 32 protons in its nucleus


3 0
4 years ago
Read 2 more answers
write a balanced equation to determine the molarity of the HCI solution when a 24.6 ml sample of HCI reacts with a 33.0 mL of 0.
MatroZZZ [7]

Answer: 0.30 M

Explanation:

HCl+NaOH\rightarrow NaCl+H_2O

According to the neutralization law,

n_1M_1V_1=n_2M_2V_2

where,

M_1 = molarity of HCl solution = ?

V_1 = volume of HCl solution = 24.6 ml

M_2 = molarity of NaOH solution = 0.222 M

V_2 = volume of NaOH solution = 33.0 ml

n_1 = valency of HCl = 21

n_2 = valency of NaOH = 1

1\times M_1\times 24.6=1\times 0.222\times 33.0

M_1=0.30M

Therefore, the molarity of the HCI solution is 0.30 M

5 0
3 years ago
Read 2 more answers
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