3 years ago

If an atom has no electric charge, what can be said about the number of protons and electrons it contains?

Chemistry

1 answer:

vitfil [10]3 years ago

8 0

then the electrons and protons would have a even amount of negetive electric charges

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3. Burns from boiling water can be severe, caused by the transfer of energy from the boiling water to the

Free_Kalibri [48]

Answer:

Q = 3937.56 J

Explanation:

Heat transferred due to change in temperature is given by :

$Q=mc\Delta T$

c is the specific heat of water, c=4.18 J/g-°C

We have, m = 15 g, $T_i=100^{\circ} C\ \text{and}\ T_f=37.2^{\circ} C$

So,

$Q=15\times 4.18\times (37.2-100)\\Q=-3937.56\ J$

Hence, 3937.56 J of heat is transferred.

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3 years ago

PLZZ!!!- I NEED THIS RIGHT NOWA block is pulled 0.90 m to the right in 2.5 s.

UNO [17]

The average speed is 0.28

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4 years ago

Which of the following statements is true based on the propositions of the kinetic molecular theory?

Delvig [45]

The answer is 4.
Gases have low densities, because of the increased space between hight-energy particles.

6 0

3 years ago

Read 2 more answers

in an experiment magnesium ribbon was heated in air the product formed was found heavier than original ribbon.potassium manganat

AlladinOne [14]

Answer:

1: due to difference in reactivity and melting point

2 during the reaction both combine with oxygen in this case magnesium remain solid but some potassium vaporise

5 0

3 years ago

In a 63.17 g sample of SO3, how many grams are sulfur?

Evgesh-ka [11]

Answer:

25.30 gram

Explanation:

No of moles = given mass / molar mass

No of moles = 63.17/80.06

0.7890 moles

Mass of sulphar = no of moles× molar mass of sulphar

Mass of sulphur = 0.7890×32.065

25.30 gram

4 0

3 years ago