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krek1111 [17]
3 years ago
13

Which best describes a single atom of an element?

Chemistry
2 answers:
masya89 [10]3 years ago
8 0
It is the simplest form of matter
Anettt [7]3 years ago
4 0

Answer:

I believe the answer is A: *It is the simplest form of matter" not 100% sure but I think that's correct

Explanation:

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How much energy is required to raise the temperature of a 300.0
Montano1993 [528]

Answer:

Q = 1455.12 Joules.

Explanation:

Given the following data;

Mass = 300 grams

Initial temperature = 22.3

Final temperature = 59.9°C

Specific heat capacity = 0.129 J/gºC.

To find the quantity of energy;

Q = mcdt

Where,

Q represents the heat capacity.

m represents the mass of an object.

c represents the specific heat capacity of water.

dt represents the change in temperature.

dt represents the change in temperature.

dt = T2 - T1

dt = 59.9 - 22.3

dt = 37.6°C

Substituting the values into the equation, we have;

Q = 300*0.129*37.6

Q = 1455.12 Joules.

8 0
3 years ago
What is the relationship between DNA and proteins?
gayaneshka [121]

Explanation:

At first sight, I could recognize you

As if we were calling for each other

The DNA in my blood vessels tell me

That it’s you I was looking all over for

7 0
2 years ago
A cylinder with a movable piston originally has a volume of 2805 mL and is filled with nitrogen to a pressure of 4.00
Sergio039 [100]

This problem is providing the initial volume and pressure of nitrogen in a piston-cylinder system and asks for the final pressure it will have when the volume increases. At the end, the answer turns out to be 2.90 atm.

<h3>Boyle's law</h3>

In chemistry, gas laws are used so as to understand the volume-pressure-temperature-moles behavior in ideal gases and relate different pairs of variables.

In this case, we focus on the Boyle's law as an inversely proportional relationship between both pressure and volume at constant both temperature and moles:

P_1V_1=P_2V_2

Thus, we solve for the final pressure by dividing both sides by V2:

P_2=\frac{P_1V_1}{V_2}

Hence, we plug in both the initial pressure and volume and final volume in order to calculate the final pressure:

P_2=\frac{2805mL*4.00atm}{3864mL}\\ \\P_2=2.90atm

Learn more about ideal gases: brainly.com/question/8711877

6 0
2 years ago
What would you predict about a chemical that has a hydrogen ion concentration of 1×10 to the -12
KonstantinChe [14]

Answer:

It is basic.

Explanation:-

Given hydrogen ion concentration [H+] = 1×10^-12

Using the formula

pH = - log [H+]

= - log [ 1 x 10^-12]

= 12

Since the pH is more than 7, the chemical is basic

3 0
3 years ago
In the first half of the Citric acid cycle, ____________ is oxidized, yielding a pair of electrons that reduce a molecule of NAD
KiRa [710]

Answer:

Pyruvate, FAD, Acetyl CoA, Fumarate, Oxaloacetate

Explanation:

In the first half of the citric acid cycle pyruvate is oxidized,yielding a pair of electrons that reduce a molecule of NAD to NADH .Succinate is oxidized to fumarate using FAD as electron acceptor.A 2 carbon group from acetyl CoA enters the cycle.A second oxidation produces fumarate and 2 electrons.Malate is oxidized yielding a 4 carbon molecule of oxaloacetate and two electrons.

8 0
3 years ago
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