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Dafna11 [192]
3 years ago
6

What is the definition of isotope?

Chemistry
2 answers:
fomenos3 years ago
8 0
Hey!


ANSWER: each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties.

Hope this helped you out!!!
Crank3 years ago
7 0

Answer:

An isotope is basically when the element of an atom has a different number of neutrons (which is atomic mass)

Explanation:

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The nature of reactants, temperature, concentration, surface area and catalysts.
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Which tool was most likely used in a procedure if the lab report shows that approximately 300 mL of water was used?
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A beaker

Explanation:

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4. What is the total mass of ice that can be vaporized by 2100 kJ of heat energy?
anygoal [31]

Answer:

5 g

Explanation:

The heat required to vaporize ice is the sum of

i) Heat required to melt ice at 0°C

ii) Heat required to raise the temperature from  0°C to 100°C

iii) Heat required to vaporize water at 100°C

Thus;

H = nLfus + ncθ + nLvap

H= n(Lfus + cθ + Lvap)

Lfus = 6.01 kJ/mol

Lvap = 41 kJ/mol

c = 75.38

n =?

2100 = n(6.01  + 75.38(100) + 41)

n = 2100 KJ/7585.01 kJ/mol

n = 0.277 moles

Mass of water = number of moles * molar mass

Mass of water = 0.277 moles * 18 g/mol

Mass of water =  5 g

3 0
3 years ago
Which of the following is the name of the process scientists use to gain
kobusy [5.1K]

Scientific method

Explanation:

The scientific method is the name of the process scientists use to gain knowledge about the physical world.

The scientific method is a systematic approach into the study of nature. It follows the following processes:

  • Detailed observation
  • Asking of question
  • Formulation of hypothesis
  • Experimentation
  • Analysis and interpretation
  • Conclusion

learn more:

Experiment brainly.com/question/1621519

#learnwithBrainly

8 0
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Which groups on the periodic table contain metalloids? Groups 1–2 Groups 3–12 Groups 13–16 Groups 17–18
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The correct answer is groups 13-16
6 0
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Read 2 more answers
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