If you had a sample containing 55 alpha particles, how many protons would be present in that sample? Show all necessary work.

1 answer:

8 0

An alpha particle is a helium nucleus without the electrons - 2 neutrons and 2 protons.

So, all you would have to do is 2 x 55, which equals 110.

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How many oxygen molecules are produced when 3.2×1022 molecules of water decompose?

snow_lady [41]

What this is confusing

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4 years ago

5.36 liters of nitrogen gas are at STP. What would be the new volume if we increased the moles from 3.5 moles to 6.0 moles?

Aleksandr [31]

Answer:

$V_2=9.20L$

Explanation:

Hello there!

In this case, according to the given STP (standard pressure and temperature), it is possible for us to realize that the equation to use here is the Avogadro's law as a directly proportional relationship between moles and volume:

$\frac{V_2}{n_2}= \frac{V_1}{n_1}$

In such a way, given the initial volume and both initial and final moles, we can easily compute the final volume as shown below:

$V_2= \frac{V_1n_2}{n_1} \\\\V_2=\frac{5.36L*6.0mol}{3.5mol}\\\\V_2=9.20L$

Best regards!

3 0

3 years ago

Reaction has a theoretical yield of 56.9 g. when the reaction is carried out, 36.6 g of the product is obtained.

musickatia [10]

I'm assuming you need to know the percentage yield of the reaction
To calculate the percentage yield = (actual yield x 100%) / predicted yield

actual yield is 56,9 g
predicted yield is 36,6g ( is the amount that's expected if nothing had got lost)

(56,9 x100)/36,6=
= 155%

7 0

4 years ago

HEY PLEASE THANK YOU

Goshia [24]

Radon hope this helps.

original answer was monoxide which is incorrect and dioxide is incorrect and it is not hydrogen meaning it has to be radon.

5 0

3 years ago

Hypothesis for does water with salt boil faster than plain water

Ronch [10]

If you add salt to water then it will boil faster than water without salt

3 0

3 years ago

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