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2 years ago

6

The graph above represents an object moving with a __________________. A) constant velocity B) constant acceleration C) constant

positive acceleration D) constant negative acceleration

1 answer:

Ann [662]2 years ago

4 0

Answer: I think its C or B

Explanation: Hope this was helpful....

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Which of the following statements is not accurate in regard to the first four energy levels?

seropon [69]

Answer:

D) False

Explanation:

A) True

The third energy level with principal quantum number n =3 will have s,p,d orbitals where the s, p ,d orbitals can accommodate a maximum of 2,6 and 8 electrons respectively. Therefore, total electron count = 18

B) True

The fourth energy level corresponds to n = 4 with s,p,d and f orbitals

C) True

A given orbital can accommodate a maximum of 2 electrons, one in the spin up and the other in a spin down orientation

D) False

The first energy level has n =1 with only s orbital

3 0

3 years ago

Why is gravity the dominant force among planets?

Allisa [31]

Answer:

But when we are talking about larger scales, like astronomical ones, gravity is dominant. The main reasons for this are that gravity has a longer range than the other forces (this shows that distance is important in both cases), and the second reason is that there is nothing in existence with negative mass.

5 0

2 years ago

What volume of hydrogen iodide is produced when 118 liters of hydrogen gas react according to the following reaction? (All gases

Nadya [2.5K]

Answer:

$V_{HI}=236LHI$

Explanation:

Hello,

In this case, for the given balanced chemical reaction:

$H_2(g)+I_2(g)\rightarrow 2HI(g)$

Thus, since hydrogen and hydrogen iodide are in a 1:2 mole ratio, we can easily compute the yielded volume as shown below:

$V_{HI}=118LH_2*\frac{2molHI}{1molH_2} \\\\V_{HI}=236LHI$

Thus, is possible, due to the Avogadro's law which allows to relate moles and volume by a directly proportional relationship.

Regards.

4 0

2 years ago

If 60.0 grams of carbonic acid are sealed in a 2.00 L soda bottle at room temperature (298 K) and decompose completely via the e

Tresset [83]

Answer:

The final pressure of the carbon dioxide gas will 11.84 atm.

Explanation:

Moles of carbonic acid = $\frac{60.0 g}{62 g/mol}=0.9677 mol$

$H_2CO_3(aq)\rightarrow H_2O(l) + CO_2(g)$

According to reaction, 1 mol of carbonic acid gives 1 mole of carbon dioxide gas.

Then 0.9677 moles of carbonic acid will give :

$\frac{1}{1}\times 0.9677 mol=0.09677 mol$ of carbon dioxide

Moles of carbon dioxide gas = n = 0.09677 mol

Volume of soda bottle = $V_1=2 L$

Pressure of the carbon dioxide gas = P

Temperature of the carbon dioxide gas = T = 298 K

$PV=nRT$ (ideal gas law)

$P=\frac{nRT}{V}=\frac{0.9677 mol\times 0.0821 atm L/mol K\times 298 K}{2 L}=11.84 atm$

The final pressure of the carbon dioxide gas will 11.84 atm.

6 0

2 years ago

Which of the following involves a chemical change?

Liula [17]

Answer:

A.

Explanation:

hehe plss give me a heart

7 0

3 years ago

Read 2 more answers