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3 years ago

Please help me I need help with this questions I’m very confused fused as to what the answer is please

Chemistry

1 answer:

zepelin [54]3 years ago

3 0

Answer: This was because the experiment showed that a substance could emit radiation even while it was not exposed to light.

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HELP ASAP!!! How many grams of lead are in a 41.2 gram sample of lead (II) oxide? With work please :)

Afina-wow [57]

That would be 58.6 oxide because if the 41.2 plus the oxide would be 48 plus the other particcles inside it so it equaled 58.6 oxide

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4 years ago

the word cumulative mean that's something builds itself. which example best shows scientific knowledge is cumulative ?

eimsori [14]

They want you pick choice-B, but it's a terribly corrupted example.

Newton came 100 years AFTER Kepler.

Furthermore, he didn't USE Kepler's laws to work out his law of gravity, but once he HAD his law of gravity, he was able to use IT to show why Kepler's laws must be true.

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3 years ago

Read 2 more answers

In scientific notation, the number .000 000 753 should be written as

kramer

Answer:

Explanation:

You want one whole number to the left of the decimal. Depending on how many times u have to move the decimal over (in this case 7 times) determines the number you put after 10. And its -7 because to get it back to its original position you have to move left, which is a negative direction.

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3 years ago

A student uses eight chocolate sandwich cookies to model the Moon's phases. The student separates each cookie and removes frosti

Serjik [45]

The link below is a picture of the "Waning gibbus" phase, really hope that it helps you out :D

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3 years ago

If 9.5 atms of pressure were increased to 25 atms of pressure, what would be the final volume

nordsb [41]

Answer:

The final volume of the gas is 36.1 L.

Explanation:

Given:

Initial pressure of the gas is, $P_1=9.5\ atm$

Final pressure of the gas is, $P_2=25\ atm$

Initial volume of the gas is, $V_1=95\ L$

Final volume of the gas is, $V_2=?$

Here, we shall use Boyle's Law which states that for a process under constant temperature, the pressure of the gas changes inversely with the change in volume.

Here, the pressure is increased. So, the volume of the gas is decreased.

Therefore, as per Boyle's Law:

$P_1V_1=P_2V_2\\9.5\times 95=25V_2\\902.5=25V_2\\V_2=\frac{902.5}{25}\\V_2=36.1\ L$

So, the final volume of the gas is 36.1 L.

4 0

3 years ago