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Zinaida [17]
3 years ago
15

How is heat transferred when a person holds a pen that is already at body temperature?

Chemistry
2 answers:
pickupchik [31]3 years ago
7 0
Your answer would be “through thermal energy”
Pani-rosa [81]3 years ago
5 0

Answer:

through thermal energy

Explanation:

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3 years ago
Read 2 more answers
What is the mass of solute in a 500 mL solution of 0.200 M
Fofino [41]

16.4 grams is the mass of solute in a 500 mL solution of 0.200 M .

sodium phosphate

Explanation:

Given data about sodium phosphate

atomic mass of Na3PO4 = 164 grams/mole

volume of the solution = 500 ml or 0.5 litres

molarity of sodium phosphate solution = 0.200 M

The formula for molarity will be used here to know the mass dissolved in the given volume of the solution:

The formula is

molarity = \frac{number of moles of solute}{volume in litres}

    putting the values in the equation, we get

molarity x volume = number of moles

0.200 X 0.5= number of  moles

number of moles = 0.1 moles

Atomic mass x number of moles = mass

putting the values in the above equation

164 x 0.1 = 16.4 grams

16.4 grams of sodium phosphate is present in 0.5 L of the solution to make a 0.2 M solution.

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3 years ago
How has СOVID-19 demonstrated<br> the process of the scientific<br> method for the public?
Vesnalui [34]

Answer:

none

Explanation:

none

7 0
3 years ago
a solution of prepared by dissolving 20.0 brams of mavni fluride (MgF2) in 80.0 of water (H2O). whag is the mole fraction of mag
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Answer:

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3 0
3 years ago
How do scientists think that gravity affected the formation of our solar system?
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Maybe because gravity has control of each formation of the solarsydtem thats why its just a guess
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