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Alja [10]
3 years ago
9

Example of a good electrical conduct

Chemistry
1 answer:
SOVA2 [1]3 years ago
3 0
Examples of good electrical conductors are copper, silver, gold and aluminum
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How does a chemist count the number of particles in a given number of moles of a substance?
jolli1 [7]
The chemist the count the number of particles (Atoms, Molecules or Formula Unit) in a given number of moles of a substance by using following relationship.

                              Moles  =  # of Particles / 6.022 × 10²³

Or,

                              # of Particles  =  Moles × 6.022 × 10²³

So, from above relation it is found that 1 mole of any substance contains exactly 6.022 × 10²³ particles. Greater the number of moles greater will be the number of particles.
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3 years ago
SHOW WORK
horsena [70]
10.0gNaCl/2.0Lsolution= 5.0g/L
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3 years ago
How much is the oxygen valency?
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The oxygen valency is 2
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2 years ago
Calculate the ΔG for the following system. Then state if the system is spontaneous or not spontaneous.
Orlov [11]

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B

Explanation:

5 0
3 years ago
If a substance has a half-life of 55.6 s, and if 230.0 g of the substance are present initially, how many grams will remain afte
Assoli18 [71]

Answer:

m=0.127g

Explanation:

Hello,

In this case, for a first-order reaction, we can firstly compute the rate constant from the given half-life:

k=\frac{ln(2)}{t_{1/2}} =\frac{ln(2)}{55.6s}=0.0125s^{-1}

In such a way, the integrated first-order law, allows us to compute the final mass of the substance once 10.0 minutes (600 seconds) have passed:

m=m_0*exp(-kt)=230.0g*exp(-0.0125s^{-1}*600s)\\\\m=0.127g

Best regards.

6 0
3 years ago
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