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Vlad1618 [11]
3 years ago
13

Scientists use their to make observations

Chemistry
2 answers:
frosja888 [35]3 years ago
5 0
Microscopes?
Scanners?
Transmitters?
Cameras?
Hand lens?
There are a lot
andreev551 [17]3 years ago
3 0
Eyes?
Tools?
Experience?
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What type of change is baking a cake?
gladu [14]

Chemical reactions occur when baking a cake, there fore cake baking is a chemical change. Generally, if a change is chemical, the thing or things that have been changed cannot be reverted back to their original state e.g. you cannot separate the ingredients of a cake after it has been baked.

3 0
3 years ago
What is the molarity of 122.5 g of AlCl3 in 1.0 L of solution? (MM = 133 g/mol)
yawa3891 [41]
Answer: Molarity is defined as moles of solute per liter of solution. So, find the moles of solute and divide by the liters of solution.
molar mass AlCl3 = 133g/mole
moles AlCl3 = 127 g x 1 mole/133 g = 0.955 moles
liters of solution = 400 ml x 1 liter/1000 ml = 0.400 liters
Molarity = 0.955 moles/0.400 liters = 2.39 M
Explain: I looked it up on wyzant.com
4 0
3 years ago
Name two chemical used to disinfect water
dmitriy555 [2]

Answer:

chlorine and I think maybe sulphur. but check the internet

4 0
3 years ago
Read 2 more answers
A student is shown a simple model of particles that make up a liquid,as shown.
trapecia [35]
Answer:
            Option-D : <span>Decrease the velocities of the particles, and decrease the space between the particles.

Explanation:
                     The solid state of matter is composed of particles closely packed with a minimum space between them. This closed packing of particles occur due to strong interatomic or intermolecular interactions between particles. Therefore, solids particles have zero translational and rotational motions and only show vibrational motions. So, decrease in velocity and decrease in space between particles is the right answer for making solids.</span>
6 0
3 years ago
How many gases are there that are not noble gases
natulia [17]

Answer:

Noble gas, any of the seven chemical elements that make up Group 18 (VIIIa) of the periodic table. The elements are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), radon (Rn), and oganesson (Og).

Explanation:

I pretty much covered it in my answer!

Pls Brainliest! It would mean a lot! ;)

8 0
3 years ago
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