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3 years ago

What creates an electric current in a battery?

Chemistry

1 answer:

sammy [17]3 years ago

8 0

Answer: The answers are kinda blury but use this info to help u out or read over the passage

Explanation:A battery is a device that stores chemical energy and converts it to electrical energy. The chemical reactions in a battery involve the flow of electrons from one material (electrode) to another, through an external circuit. The flow of electrons provides an electric current that can be used to do work.

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Rocks melt at what temperature range?

zlopas [31]

600 and 1,300 degrees Celsius Explanation: I searched it up lol

6 0

3 years ago

A. Calculations for the Determination of Ammonium Chloride The data from the data entry portion of the report has been copied in

Vladimir79 [104]

Answer:

Explanation:

Considering question A

Mass of original sample is $m_o = 0.945 \ g$

Mass of NH4Cl is $m_n = 0.116 \ g$

Percent of NH4Cl is $k = 12.275 \%$

Mass of NaCl $m_k = 0.359 \ g$

Mass of SiO2 $m_e = 0.46$

Mass of original sample $m_o = 0.945 \ g$

Differences in these weights (g) (use the absolute value of the difference)

recovery of matter $G = 0.01 \ g$

The correct option is C

From the question we are told that

The mass of evaporating dish on #1 is $m_1 = 38.646 \ g$

The mass of evaporating dish and original sample $m_2 = 39 591 \ g$

The mass of evaporating dish after subliming $NH_4Cl$ is $m_3 = 39.4750 \ g$

Generally the mass of the original sample is mathematically represented as

$m_o = m_2 - m_1$

=> $m_o = 39 591 - 38.646$

=> $m_o = 0.945 \ g$

Generally the mass of $NH_4Cl$ is mathematically represented as

$m_n = m_2 - m_3$

=> $m_n = 39 591 - 39.4750$

=> $m_n = 0.116 \ g$

The Percent $NaH_4 Cl (g)$

$k = \frac{ m_n}{m_o} *100$

=> $k = \frac{0.116 }{0.945} *100$

=> $k = 12.275 \%$

Considering question B

The mass of evaporating dish #2 is $m_g = 38700\ g$

The mass of watch glass is $m_a = 28 299 \ g$

The mass of evaporating dish #2, watch glass and NaCl $m_b = 67,355 \ g$

Generally the mass of NaCl is

$m_k = m_b -[m_g + m_a]$

=> $m_k = 67,355 -[38700 + 28 299]$

=> $m_k = 0.359 \ g$

Considering question C

The mass of evaporating dish is $m_p= 38.645$

The mass of evaporating dish and SiO2 $m_s = 39.105 \ g$

Generally the mass of SiO2 is mathematically represented as

$m_e = 39.105 - 38.645$

=> $m_e = 0.46$

Considering D

The mass of the original sample is $m_o = 0.945 \ g$

Generally the experimental mass recovered (NH_4Cl,NaCl, SiO2 ) is mathematically evaluated as

$M =0.116 + 0.46 + 0.359$

$M = 0.935 \ g$

Generally the differences in these weights (g) of recovery of matter is mathematically represented as.

$G =0.945- 0.935$

=> $G = 0.01 \ g$

While drying the NaCl, the liquid boiled and some splattered out of the evaporating dish, causing the recovered mass to be lower.

6 0

3 years ago

A box has dimensions of 14 inches long, 1.5 feet wide, and 7 inches high. What is the volume of the box?

Brilliant_brown [7]

Answer:

V = 4480.56 cm3

Explanation:

Data Given

Length “l” = 14 inches

Hight “h” = 7 inches

Width “w” = 1.5 feet

Volume= “V”

Solution:

Formula to Use

V= l . w. h

Note: here we have to values in the same unit

So the Length “l” and Hight “h” both are in inches but the width is in feet

So we changes the feet into inches

1 foot = 12 inches

1.5 feet = 12 x 1.5

1.5 feet = 18 inches

So width is 18 inches

Now putting the values in formula

V = l . w. h

V = 14 . 18 . 7

V = 1764 inch

You can convert inches to cm

1 inch = 2.54 cm

So 1764 inches = 2.54 x 1764

1764 inches = 4480.56 cm3

V = 4480.56 cm3

7 0

3 years ago

The force that slows down and eventually stops a ball you roll across the pavement is called A) kinetic force. B) friction force

Tpy6a [65]

The ball stops moving because of friction force. Friction is the force that opposes all motion. Therefore, the answer is friction force...

4 0

4 years ago

Which of the following subatomic particles has the LEAST mass?

ivanzaharov [21]

An electron this is the smallest particle and it takes up the least mass because its negative charge makes it harder for electrons to have a place in an atom.

3 0

3 years ago