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garik1379 [7]
3 years ago
12

Give an example of where you may see heat and light produced in everyday life which is not evidence of a chemical reaction. Expl

ain the source of the heat and light.
Chemistry
1 answer:
xxTIMURxx [149]3 years ago
5 0
Heat and light- The sun because it gives us daylight and it produces heat. These arent made by a chemical reaction when it comes to the sun.
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The particle that adds mass but no charge to the atomic nucleus is the
andrew-mc [135]

The particle that adds mass but no charge to the atomic nucleus is the neutron.

The nucleus contains both protons and neutrons.

Protons and neutrons have about the same mass.

However, protons have a positive charge, while <em>neutrons have no charge</em>,

6 0
4 years ago
calculate density of a rectangular solid, which has a mass of 25.71 g. It is 2.30 cm long, 4.01 cm wide and 1.82 cm high.
Levart [38]
Density is a property of the substances that is obtained by dividing its mass by the volume. For a rectangular solid, the volume may be solved by the following equation,
 
                                          V = L x W x H

Substituting the given values for the dimension,
 
                  V = (2.30 cm) x (4.01 cm) x (1.82 cm) = 16.78786 cm³

Calculating for the density,
 
                                Density = mass / volume
 
                Density = 25.71 cm / <span>16.78786 cm³ = 1.53 grams per cm</span>³

Thus, the density of the given solid is approximately 1.53 grams per cm³.




5 0
3 years ago
How many rings/energy levels would the Bohe model for an element
sattari [20]
It would have THREE rings/energy levels. This is because of the amount of electrons each orbital can hold.
6 0
3 years ago
A cell using protein-mediated facilitated diffusion is treated with a toxin that prevents conformation change in the membrane pr
seraphim [82]

Answer:

The most likely outcome is that carrier protein dysfunction will increase the gradient which will lead to disruption of cellular metabolism.

3 0
3 years ago
A discus thrower throws a 1.6kg discus at 25m/s what's the kinetic energy?​
Ilya [14]

Answer:

<h2>500 J</h2>

Explanation:

The kinetic energy of an object can be found by using the formula

k =  \frac{1}{2} m {v}^{2} \\

where

m is the mass

v is the velocity

From the question

m = 1.6 kg

v = 25 m/s

We have

k =  \frac{1}{2}  \times 1.6 \times  {25}^{2}  \\  = 0.8 \times 625 \\  = 500

We have the final answer as

<h3>500 J </h3>

Hope this helps you

6 0
3 years ago
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