3 years ago

Silicon can be made by heating a mixture of sand (silicon dioxide) with magnesium

Chemistry

1 answer:

natita [175]3 years ago

7 0

Answer:

$\frac{60}{28} = \frac{15}{7}$

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A student obtains a mixture of the chlorides of two unknown metals, X and Z. The percent by mass of X and the percent by mass of

Aleksandr-060686 [28]

<u>Answer:</u> The additional information that is helpful in calculating the mole percent of XCl(s) and ZCl(s) is the molar masses of Z and X

<u>Explanation:</u>

To calculate the mole percent of a substance, we use the equation:

$\text{Mole percent of a substance}=\frac{\text{Moles of a substance}}{\text{Total moles}}\times 100$

Mass percent means that the mass of a substance is present in 100 grams of mixture

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

We require the molar masses of Z and X to calculate the mole percent of Z and X respectively

Hence, the additional information that is helpful in calculating the mole percent of XCl(s) and ZCl(s) is the molar masses of Z and X

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3 years ago

What do you call a bond that forms when electrons are transferred from one atom to another?

AlekseyPX

It is called an ionic bond

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3 years ago

What happens to an object's temperature if the kinetic energy of its particles decrease

ser-zykov [4K]

The temperature decreases

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4 years ago

An element has three different isotopes. One has a mass of 35.00 amu; another has a mass of 36.00 amu; and another has a mass of

yulyashka [42]

Answer:

so 35+38+36÷3= 109÷3 =36.33 AMU

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3 years ago

Differentiate between subjective and objective mineral properties

malfutka [58]

Subjective minerals are minerals that are subjected to so something specific. Objective minerals are minerals that have an object they are made for.
although this is a small difference, in the scientific world with out this you could go totally wrong

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3 years ago