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3 years ago

Changes in ________ move matter from one state to another.

2 answers:

7 0

Temperature. Water is an example. When water is at room temp. its liquid. When water is at boiling temp. It is a gas. And when water is at freezing temp. Its a solid.

Keith_Richards [23]3 years ago

5 0

Answer: Option (A) is the correct answer.

Explanation:

Change in state of a substance or matter is affected by changes in kinetic energy of atoms of the matter.

More is the kinetic energy within the atoms of a matter, more easily it is able to change its state.

Also, it is known that

$K.E \propto \frac{3}{2}kT$

This relation shows that kinetic energy is directly proportional to temperature of a substance.

Hence, we can conclude that changes in temperature move matter from one state to another.

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What atomic or hybrid orbitals make up the bond between c2 and o in acetaldehyde, ch3cho?

SSSSS [86.1K]

Acetaldehyde is an organic compound (a compound containing C atoms) composed of a carbonyl group. On the other hand, a carbonyl group is a functional group containing C = O. The hybrid orbitals of a compound determines the number pi and s orbitals in the electronic configuration. For a single bond, there are two s orbitals. For double bonds, on the other hand, the number of s orbital bond is 1 while the number of pi bonds is 2. For triple bonds, there are three pi bonds present in the cloud.

Thus for a c = O bond, the atomic orbital configuration is sp3 containing 1 s orbital and 2 pi bonds.

8 0

3 years ago

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The decomposition reaction of A to B is a first-order reaction with a half-life of 2.42×103 seconds: A → 2B If the initial conce

kipiarov [429]

Answer:

$t=23.5min$

Explanation:

Hello,

In this case, since the rate equation turns out as shown below due to the first-order kinetics:

$\frac{dC_A}{dt}=-kC_A$

Its integration results:

$\int\limits^{C_A}_{C_A^0} { \frac{dC_A}{C_A}} \,=-k\int\limits^t_0 {} \, dt\\ln(\frac{C_A}{C_A^0})=-kt$

However, the rate constant is computed by considering the given half-life time as follows:

$k=\frac{ln(2)}{t_{1/2}}=\frac{ln(2)}{2.42x10^3s}=2.86x10^{-4}s^{-1}$

In such a way, the required time in minutes to diminish the concentration by 66.8% of the initial turns out:

$C_A=0.668C_A^0$

$ln(\frac{0.668C_A^0}{C_A^0})=-kt$

$t=\frac{-ln(0.668)}{2.86x10^{-4}s^1}=1408.3s*\frac{1min}{60s} \\t=23.5min$

Best regards.

3 0

3 years ago

Select all of the physical properties of matter

Vera_Pavlovna [14]

Answer:

A) solubility

B)luster

D)Density

F)magnetism

Explanation:

A physical property is one that tells us everything about what a substance is when no change is is occurring to its constituent.

Such properties can be observed with our senses or instruments or pieces of apparatus.

Examples are luster, density, solubility, taste, odor, color, melting point, boiling point etc.

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3 years ago

How to change τhe color of silver mercury to red???

elena-14-01-66 [18.8K]

Answer: This is the hue of mercury if you're looking for it. Mercury reacts with sulphur to generate a crimson hue. In the past, they always used a thermometer.

Explanation: However, due of its toxicity, individuals have switched to using alcohol in glass thermometers, which work similarly to mercury thermometers.

hope this helped best of luck mate! :) if this helped make sure to mark me Brainliest!

8 0

3 years ago

Please help me thanks:)

lianna [129]

Answer:

where it goes

Explanation:

3 0

3 years ago

Read 2 more answers