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MaRussiya [10]
3 years ago
12

When rolling a number cube 500 times, how many times you expect to get a 3?

Chemistry
1 answer:
andreyandreev [35.5K]3 years ago
3 0

Answer:

\frac{250}{3}

Explanation:

you can expect to get a 3 (theoretically) 1 time every 6 times you roll. A 1/6 chance.

Here's the equation:

\frac{1}{6} =\frac{x}{500}

cross multiply (i think that's what it is called)

500=6x

divide by 6 on both sides:

x=\frac{250}{3} or approx 83 times.

Hope this helps! Lmk if u have more questions <3

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20.0g of H2(g) and 32g of O2(g) are reacted produce H2O(l). The amount of hydrogen left behind after completion of reaction is?
Hitman42 [59]

Answer:

8 moles = 16 gm of H2 left over

Explanation:

The balanced equation is

2 H2  +  O2   ===> 2 H2 O

20 g H2   =    20 g / 2 gm/mole = 10 moles of H2

32 g O2   =    32g / 32 g / mole = 1 mole O2

From the balanced equation, you can see each 2 moles of H2 requires 1 Mole of O2

  you would need 20 moles of O 2 to react withe the 10 moles of H2

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5 0
2 years ago
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4 0
4 years ago
Why is "Glutathione"considered as a reducing agent?
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3 0
3 years ago
To what temperature must a balloon, initially at 25°C and 2.00 L, be heated in order to have a volume of 6.00 L
andreyandreev [35.5K]

Answer:

894 deg K

Explanation:

The computation is shown below:

Given that

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T1 denotes the initial temperature of gas = 25 + 273 = 298 K  

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T2 = ?

Based on the above information

Here we assume that the pressure is remain constant,

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