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il63 [147K]
1 year ago
15

CAN someone please help me !!!!!!!!!!!

Chemistry
1 answer:
vova2212 [387]1 year ago
4 0

Yes, the motor would run faster because the increased electrical force increases the magnetic force in the motor. That is option B.

<h3>What are electrical forces?</h3>

An electrical field is defined as the type of field that is surrounded by charged particles which may be negatively or positively charged.

A battery is an electron chemical cell that has the ability to generate electrical energy through chemical reaction in its cells.

A magnetic force is defined as the type of force generated through the action of moving electric charges or magnetic materials.

When the number of batteries in a circuit is being increased, there would be increase in the input voltage leading to an increase in the magnitude of the speed.

Therefore, the motor is expected to run faster because of the increased magnetic force of the motor which is caused by increase electrical force.

Learn more about magnetic field here:

brainly.com/question/26257705

#SPJ1

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How many atoms are in 3.2 pg of Ca? The molar mass of Ca is 40.08<br> g/mol.
anyanavicka [17]

Answer:

4.81×10¹⁰ atoms.

Explanation:

We'll begin by converting 3.2 pg to Ca to grams (g). This can be obtained as follow:

1 pg = 1×10¯¹² g

Therefore,

3.2 pg = 3.2 pg × 1×10¯¹² g / 1 pg

3.2 pg = 3.2×10¯¹² g

Therefore, 3.2 pg is equivalent to 3.2×10¯¹² g

Next, we shall determine the number of mole in 3.2×10¯¹² g of Ca. This can be obtained as follow:

Mass of Ca = 3.2×10¯¹² g

Molar mass of Ca = 40.08 g/mol

Mole of ca=.?

Mole = mass /molar mass

Mole of Ca = 3.2×10¯¹² / 40.08

Mole of Ca = 7.98×10¯¹⁴ mole.

Finally, we shall determine the number of atoms present in 7.98×10¯¹⁴ mole of Ca. This can be obtained as illustrated below:

From Avogadro's hypothesis,

1 mole of Ca contains 6.02×10²³ atoms.

Therefore, 7.98×10¯¹⁴ mole of Ca will contain = 7.98×10¯¹⁴ × 6.02×10²³ = 4.81×10¹⁰ atoms.

Therefore, 3.2 pg of Ca contains 4.81×10¹⁰ atoms.

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Answer:

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Explanation:

I got this from chem.libretexts.org in case you wanted to know

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