CHEMISTRY COLLEGE

(01.04 LC)What phase of matter has particles that are held together but can flow past each
other and takes the shape of a container, filling it from the bottom up? (3 points)
1) Gas
2) Liquid
3) Plasma
4) Solid

Answers

Answer 1
Answer: the answer is liquid ! hope this helped :)

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If sodium arsenite is Na3AsO3, the formula for calcium arsenite would be

Answers

Answer:

Ca₃(AsO₃)₂

Explanation:

Sodium arsenite, with the chemical formula Na₃AsO₃, is formed  by the cation Na⁺ and the anion AsO₃³⁻. For the molecule to be neutral, 3 cations Na⁺ and 1 anion AsO₃³⁻ are required.

Calcium arsenite would be formed by the cation Ca²⁺ and the anion AsO₃³⁻. For the molecule to be neutral, we require 3 cations Ca²⁺ and 2 anions AsO₃³⁻. The resulting chemical formula is Ca₃(AsO₃)₂.

After mixing sand with water, after awhile it settles to the bottom. WHY?

Answers

Answer:

Because the water is filled up with the sand every where

Explanation:

So the exess sand goes to the bottem

Answer:

Mass/Volume

Explanation:

The sand eventually makes it way to the bottom because of its mass/volume compared to the waters density. Just like while swimming in a pool, we sink to the bottom because of our mass/volume.

If you perfom 30 joules of work lifting a 20-N box from the floor to a shelf how high is the shelf ​

Answers

Answer: 1.5 m

Explanation: E=mgh=Fh

30 J = 20 N * h

h = 30/20 = 1.5 m

Answer:

1.5 m

Explanation:

it just is its easy made A on test

Which compound is classified as an electrolyte? a) C6H12O6
b)Ca(OH)2
c)C12H22O11
d)CH3OH

Answers

Answer:
            Option-B, Ca(OH)₂ is the correct answer.

Explanation:
                   By definition Electrolytes are those compounds which when poured in polar solvents dissociate into a positively charged specie called Cation and a negatively charged specie called an Anion. These ions have the potential to conduct electricity. 
                   So Ca(OH)₂ is dissolved in water it produces Ca⁺² cation and OH⁻ anions. So it acts as an Electrolyte.
                    While, C₆H₁₂O₆ (Glucose), C₁₂H₂₂O₁₁ (Table Sugar) and CH₃OH (Methanol) are covalent compounds and does not produce any positive or negative ions when dissolved in water.

Which of the following statements is true with regard to transverse and longitudinal waves?Group of answer choices

Both transverse waves and longitudinal waves have motion parallel to velocity.

Both transverse waves and longitudinal waves have motion perpendicular to velocity.

Transverse waves have motion parallel to velocity, while longitudinal waves have motion perpendicular to velocity.

Transverse waves have motion perpendicular to velocity, while longitudinal waves have motion parallel to velocity.

Answers

The true statement is that Transverse waves have motion perpendicular to

velocity, while longitudinal waves have motion parallel to velocity.

What is a wave?

This is a disturbance which travels through a medium and transports

energy in the process.

Transverse waves have motion which are perpendicular to the velocity

while the longitudinal waves move in the direction of the velocity which is

why they are regarded as being  parallel to each other.

Read more about Waves here brainly.com/question/15663649

Answer:

D (The last answer)

Explanation:

In a transverse wave, particles oscillate perpendicular to the direction of wave motion.

In a longitudinal wave, the oscillations of particles are parallel to the direction of propagation.

How could you use these solutions to determine the identities of each metal powder?Fill in the blanks with options in below:
1. The nitric acid solution will oxidize and thus dissolve _________. This will allow to identify ________.
2. To distinguish between ________, we can use the nickel nitrate
3. The nickel nitrate solution will oxidize and thus dissolve ________ and will not oxidize or dissolve ________.
Options:
a. Zn and Pt
b. Zn, Pb and Pt
c. Pb and Pt
d. Pb
e. Zn
f. Pt
g. Zn and Pb

Answers

Answer:

1.) The nitric acid solution will oxidize and thus dissolve _*(Zn and Pb)*_. This will allow to identify _**Pt**_.

2) To distinguish between _*(Zn and Pb)*_, we can use the nickel nitrate.

3) The nickel nitrate solution will oxidize and thus dissolve _**Zn**_ and will not oxidize or dissolve _**Pb**_.

Explanation:

1) Unlike Zinc and Lead, Platinum does not react with Nitric acid. So, it will be the only metal from step 1 that doesn't react. Pt is identified in this manner.

2) Nickel is higher than Lead in the activity series, but Zinc is higher than both of them in the activity series. This selectivity can be used to distinguish between Zinc and Lead metal powders.

3) Because Zinc is higher than Nickel in the activity series, it means that Zinc metal can and will displace Nickel from Nickel Nitrate solution. Therefore the Nickel Nitrate solution will oxidize and dissolve the Zinc metal.

But, there will be no reaction with the Lead metal powders sample as Pb is lower than Ni in the activity series, so, Nickel Nitrate solution will not oxidize or dissolve the Lead metal powders.
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