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kkurt [141]
2 years ago
5

Match each item to its proper disposal method. Answers to be used more than once.

Chemistry
1 answer:
salantis [7]2 years ago
8 0

Answer:

1. a)

2. a)

3. b)

4. d)

Explanation:

The disposal method is how we throw away the wastes. In a chemical lab, the correct disposal method guarantees the security of the environment and the humans and animals that may be in contact with the materials.

So:

1. Excess chemical: Because it can be toxic, it may be disposed of in the appropriate waste container, which will depend on the characteristics of the material;

2. Reaction mixture: As the excess chemical, it can be toxic, so it must be disposed of at an appropriate waste container;

3. Used filter paper: Generally, the solids in the filter paper is not toxic, so it can be thrown away in the trash can;

4. Cracked or chipped beaker: Because the beaker is made of glass, it can cut when broken, so it must go to a broken glass box, that will protect the people that will deal with it.

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13. Which best describes the transition from gas to liquidy (2 points)
Vlad1618 [11]

Energy must be removed because particles in liquid move more slowly. This statement best describes the transition from gas to liquid.

Option A

<u>Explanation:</u>

The process of transferring from gas to liquid is termed as condensation. It requires the release of energy from the gas molecules to condense them as liquid. Gas molecules inherit large amount of energy in order to move fast as the particles of gas moves faster compared to liquid.

Thus, the extra energy need to be released before converting it to liquid which has particles having less velocity of particles. So the statement describing the transition from gas to liquid is that the energy must be removed because the particles in liquid move more slowly.

3 0
3 years ago
What is the speed of a wave with a frequency of 2 Hz and a wavelength of 87m (subject is science) pls answer fast
beks73 [17]

Answer:

43.5

Explanation:

Hope that helps

4 0
2 years ago
During osmosis, water moves from a region of _____ to a region of _____.both "high solvent concentration; low solvent concentrat
Vinil7 [7]

Answer: -

Osmosis is the process by which water molecules move from a region of high solvent concentration to low solvent concentration.

Now in any solution there are just solute and solvent.

If the amount of solvent is more in a solution then the amount of solute would be less.

Again if the amount of solvent is less in a solution then amount of solute is more.

Thus we can write that :- osmosis is the movement of water molecules from a region of low solute concentration to high solute concentration.

5 0
3 years ago
Read 2 more answers
A crystallographer measures the horizontal spacing between molecules in a crystal. The spacing is 10.59 nm . What is the total w
Readme [11.4K]
Whenever objects are placed in a line with spaced in between them, the number of spaces is one less than the number of objects. For reference, you may hold up four fingers and count the spaced between your fingers.

Therefore, if there are 105 molecules, then there are 104 spaces present.

We also know that 1 mm = 1000 nm. So, we first convert the spacing to millimeters as the final answer is required in millimeters

spacing = 10.59/1000 = 0.01059 mm

Now, the width of the lattice will be (ignoring the size of the molecules):

104 * 0.01059

1.10 millimeters
8 0
3 years ago
Which of the following equations is balanced in a basic solution? A. ClO-(aq) + 2H-(aq) + 2e- Cl-(aq) + H2O(l) B. ClO-(aq) + H2O
Phantasy [73]
D
ClO-(aq) + H2O(l) + 2e- Cl-(aq) + 2OH-(aq) apex
6 0
2 years ago
Read 2 more answers
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