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lys-0071 [83]
3 years ago
5

Describe the current model of the atom and the characteristics of each of the 3 subatomic particles. Be prepared to provide the

number of protons, neutrons and electrons for a given element.
Chemistry
1 answer:
pantera1 [17]3 years ago
3 0

Answer:

The current model of the atom and the characteristics of each of the 3 subatomic particles are the electron cloud which contains 1 subatomic particle the electron which has negative charge and weights 1/2000 AMU the electron cloud surrounds the nucleus, the nucleus contains two subatomic particles the proton which has positive charge and weights one AMU and the neutron which has neutral/no charge and weights one AMU.

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you find 13406190 pennies. how many dollars did you actcually find? if each penny weighs 4 grams, how much does all of it weigh
notsponge [240]

Answer:

134,061.9 dollars and 118,222.45 lbs.

Explanation: you're welcome :)

5 0
3 years ago
What is the mass of a gold bar that is 7.379*10^-4 m^3 in volume?
NISA [10]
Mass to volume
M^3 --> cm^3
Cm^3 --> mL
Centi = 10*-2
7.379*10-4 / 1*10-2 = .07379

8 0
3 years ago
A low-pressure weather system comes into the city of Denver. The atmospheric pressure is 693 mmHg.693 mmHg. If 78.0%78.0% of dry
scoundrel [369]

Answer:

540.54 mmHg

Explanation:

We know that the partial pressure of a substance is defined as; Mole fraction * total pressure.

If the total amount of gases in the atmosphere is 100%, the mole fraction of nitrogen gas is now

78/100 = 0.78

Thus, partial pressure of nitrogen gas = 0.78 * 693 = 540.54 mmHg

6 0
3 years ago
Which direction will the following reaction (in a 5.0 L flask) proceed if the pressure of CO_2(g) is 1.0 atm? CaCO_3(s) rightarr
storchak [24]

Answer:

d. To the left because Q > K_p

Explanation:

Hello,

In this case, for the given reaction:

CaCO_3(s) \rightarrow CaO(s) + CO_2(g)

The pressure-based equilibrium expression is:

Kp=p_{CO_2}

In such a way, since Kp is given we rather compute the reaction quotient at the specificed pressure of carbon dioxide as shown below:

Q=p_{CO2}=1.0

Therefore, since Q>Kp we can see that there are more products than reactants, which means that the reaction must shift leftwards towards the reactants in order to reestablish equilibrium, thus, answer is d. To the left because Q > Kp.

Regards.

6 0
3 years ago
Which of the following units is an SI base unit?
Kisachek [45]

Answer:

kg

Explanation:

kilogram√

m³×

cm×

l×

5 0
3 years ago
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