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3 years ago

What state of matter is jello?

2 answers:

7 0

Well it takes liquid to make it and jello powder when you put it in the fridge and take it out its a solid so if you wanna know what it is at room temperature is solid

Minchanka [31]3 years ago

5 0

<span>An amorphous solid</span> s the answer

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Elements beyond number ___on the periodic table are radioactive

KATRIN_1 [288]

Uranium, which is number 92

3 0

4 years ago

Read 2 more answers

Consider the following equation for the combustion of acetone (C3H6O), the main ingredient in nail polish remover.

solong [7]

Answer:

a) 4869 kj will be released

b) 43.86 g of octane

Explanation:

The heat of combustion is the amount of heat released when one mole of a substance reacts with enough oxygen

since the heat of combustion is per mol of combustible substancewjat we are required to do in this problem is calculate number moles in the reactions although in a different manner

a) MW C3H6O = 158 g/ mol

mol C3H6O = 158 g × 1 mol/ 58.08 g

= 2.72 - 1790 kj / mol ×2.72 mol = 4869 kj

b) Here we are asked the mass of octane to produce 1950 kj of heat knowing that per mole of octane we get 5074.1 kj then

1 mol / 5074.1kj × 1950 kj= 0.384 mol

mass C8H18 = 0.384 mol × 114.23 g/ mol = 43.86 g

4 0

3 years ago

Read 2 more answers

Calculate the root mean square (rms) average speed of the atoms in a sample of xenon gas at 0.15 atm and -55c

GrogVix [38]

Answer:
Vrms is 149.7266 m/sec

Explanation:
The root means square velocity of a gas can be calculated as follows:
Vrms = $\sqrt{ \frac{3RT}{M}}$
where:
R is the ideal gas constant = 8.3145
T is absolute temperature = -55 + 273 = 118 degrees kelvin
M is the molar mass of the gas = 131.293 grams = 0.131293 kg

Substituting with these givens in the above equation, we would find that the Vrms is 149.7266 m/sec

Hope this helps :)

7 0

4 years ago

Hey.... If I got a question in my exams of which metal does not react with hydrochloric acid and I write gold as the answer, wil

Slav-nsk [51]

Answer:

I think you would pretty much get the answer wrong.

You won´t get full credit. sorry for your wrong test answer, :(

Explanation:

The correct answer would be copper and mercury do NOT react with hydrochloric acid.

3 0

3 years ago

How is an analogy different from a metaphor

iragen [17]

An analogy is a comparison between two things
Example: banana is to yellow as red is to apple OR banana:yellow as red:apple

A metaphor is a figure of speech where a word or phrase is applied and it’s not literal.
Example: it’s raining cats and dogs. It’s not really raining literal cats and dogs. It’s just raining really hard.

3 0

4 years ago