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bija089 [108]
3 years ago
5

If an atom has 43 electrons, 50 neutrons, and 43 protons, what is it's approximate atomic mass? what is the name of this element

?
Chemistry
1 answer:
Flauer [41]3 years ago
4 0
I believe the answer to your question would be Fluorine. I hope I answered your question, my friend. :) 
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How much heat energy is needed to heat 300g of water from 10 degrees Celsius to 50 degrees Celsius
elixir [45]

Answer:

There is 50.2 kJ heat need to heat 300 gram of water from 10° to 50°C

Explanation:

<u>Step 1: </u>Data given

mass of water = 300 grams

initial temperature = 10°C

final temperature = 50°C

Temperature rise = 50 °C - 10 °C = 40 °C

Specific heat capacity of water = 4.184 J/g °C

<u>Step 2:</u> Calculate the heat

Q = m*c*ΔT

Q = 300 grams * 4.184 J/g °C * (50°C - 10 °C)

Q = 50208 Joule = 50.2 kJ

There is 50.2 kJ heat need to heat 300 gram of water from 10° to 50°C

8 0
2 years ago
Which of the following reactions are possible if sodium is more reactive than aluminum, 3 iron, and lead?
Deffense [45]

Answer:

Reaction I: Sodium + Aluminum chloride →Sodium chloride + Aluminum

Explanation:

Sodium being more reactive means that it will take the place of aluminium in whats called a displacement reaction and form.

Sodium chloride + Aluminum

8 0
3 years ago
Read 2 more answers
Liquid Q is a polar solvent and liquid R is a nonpolar solvent. On the basis of this information, you would expect:
bearhunter [10]
4) is correct
This is because water is polar and it will mix with a polar solvent. A good rule for remembering the behavior of non-polar and polar compounds when it comes to being miscible is that "like dissolves like."
6 0
3 years ago
5. An object is a regular, rectangular, solid with dimensions of 2 cm by 3cm by 2cm. It has a mass of 24 g. find its density.
m_a_m_a [10]

Answer:

Density, D = 2g/cm^3

Explanation:

Given the following data;

Length = 2cm

Width = 3cm

Height = 2cm

Mass = 24g

Density = ?

Volume of a rectangular solid (V) = Length × Weight × Height

Therefore, V = L× W × H

Substituting the values, we have;

V = 2 *3 * 2 = 12

V = 12cm

Density can be defined as the ratio of mass to volume i.e mass all over volume.

Mathematically, Density = \frac{Mass}{Volume}

D = \frac{M}{V}

Substituting the values, we have;

D = \frac{24}{12}

<em>Density, D = 2g/cm^3</em>

Hence, the density of the rectangular solid is 2g/cm^3.

3 0
3 years ago
Weather is influenced by global patterns of atmospheric movement. Winds and
Sholpan [36]

Winds and ocean currents are evidence for the process of regulating and stabilizing the climate patterns.

<h3>What are winds and ocean currents?</h3>

Ocean current is the flow or movement of water in a direction by gravity, wind, and difference in density of the water.

Wind currents pull water and create ocean currents. The current flow to westwards, which is called Coriolis effect.

Thus, Winds and ocean currents are evidence for the process of regulating and stabilizing the climate patterns.

Learn more about ocean currents

brainly.com/question/21654036

#SPJ1

6 0
2 years ago
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