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4 years ago

What is the particle that is labeled with a question mark (?) in the diagram?

Chemistry

2 answers:

joja [24]4 years ago

8 0

The answer is (b)= a quark

Nat2105 [25]4 years ago

5 0

Answer is: quark.

Quark is a type of elementary particle and a fundamental constituent of matter.

Quarks form composite hadrons (protons and neutrons). Protons and neutrons are in the nucleus of an atom.

Hadrons include baryons (protons and neutrons) and mesons.

There are six types of quarks: up, down, strange, charm, bottom, and top.

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I need helppppppp ..............

NeTakaya

A. Li also know as Lithium has 3 protons.
B. To find number of neutrons in a element you subtract number of protons by mass number.
C. Protons have a positive charge.
D. Electrons have a negative charge.
E. Neutrons have no charge and are neutral.

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3 years ago

Isoniazid is used in the treatment of tuberculosis and multiple sclerosis. Identify each lone pair as either localized or deloca

dolphi86 [110]

Answer:

Please find the complete question and its solution in the attached file:

Explanation:

4 0

3 years ago

They say that the sun will blow up after 200 billion years.

Nikitich [7]

Answer:

True

Explanation:

Because the sun is a star, all stars eventually explode after a certain amount of time

4 0

3 years ago

Read 2 more answers

The half-life of Erbium-165 is 10.4 hours. After 24 hours a sample has been reduced to a mass of 2 mg. What was the initial mass

Pachacha [2.7K]

Answer:

$[A_0]=10\ mg$

$[A_t]=0.08245\ mg$

Explanation:

Given that:

Half life = 10.4 hours

$t_{1/2}=\frac{\ln2}{k}$

Where, k is rate constant

So,

$k=\frac{\ln2}{t_{1/2}}$

$k=\frac{\ln2}{10.4}\ hour^{-1}$

The rate constant, k = 0.06664 hour⁻¹

Time = 24 hours

Using integrated rate law for first order kinetics as:

$[A_t]=[A_0]e^{-kt}$

Where,

$[A_t]$ is the concentration at time t = 2 mg

$[A_0]$ is the initial concentration = ?

So,

$2\ mg=[A_0]\times e^{-0.06664\times 24}$

$[A_0]=10\ mg$

Now, time = 3 days = 3*24 hours = 72 hours ( 1 day = 24 hours)

$[A_0]=10\ mg$

Thus,

$[A_t]=10\times e^{-0.06664\times 72}\ mg=0.08245\ mg$

6 0

4 years ago

A sample of co2 gas at 22 degrees celsius and 1 atm has a volume of 2.00 l. determine the ratio of the original volume to the fi

REY [17]

Need to know the variable. What changed, the amount of CO2, temp or pressure?
Incomplete question.

6 0

3 years ago