4 years ago

A mineral always contains certain ___

Chemistry

2 answers:

Vesnalui [34]4 years ago

6 0

Answer:elements in definite proportions.

Explanation:

const2013 [10]4 years ago

4 0

A mineral always contain certain elements in definite proportions

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den301095 [7]

Question 1 im pretty sure it is a. oxygen is in the formula.
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3 years ago

If you have 3.48 x 1023 formula units of Lead (II) Permanganate, what is its mass?

Tanya [424]

Answer:

$\large \boxed{\text{257 g}}$

Explanation:

We can convert the formula units to moles and then use the molar mass to find the mass.

1. Moles of Pb(MnO₄)₂

$n = 3.48 \times 10^{23}\text{ formula units} \times \dfrac{\text{1 mol}}{6.022 \times 10^{23}\text{ formula units}} = \text{0.5779 mol}$

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$\text{Mass} = \text{0.5779 mol} \times \dfrac{\text{445.07 g}}{\text{1 mol u}} = \text{257 g}\\\\\text{The mass of lead(II) permanganate is $\large \boxed{\textbf{257 g}}$}$

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4 years ago

Which is the best description of a chain of custody?

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3 years ago

Consent bonds exist when combining atoms give up or accept electrons true or false

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I think the "consent bonds" in your question is means covalent bond. It is false. Covalent bond share the electrons between atoms while ionic bond give up or accept electrons.

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If a sodium atom looses an electron to form an ion what is its charge?

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Is there any answers to choose from?

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3 years ago

Read 2 more answers