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3 years ago

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Chemistry

1 answer:

stiks02 [169]3 years ago

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What mineral has 2 sugar-cube sized, irregularly shaped pieces. Brassy-yellow in color with metallic luster. Flat surfaces look

Vilka [71]

Answer:

The mineral we are talking about here is olivine.

Explanation:

It is a bit dark in color which ranges between yellow to Green to olive green. The luster present in it is nonmetallic luster but has a glassy finish and a substance hardness that is ranging between 6.5 to 7.

This mineral has granular masses which we can say has mass like sugar grains. This mineral has cleavage with conchoidal fracture present in it.

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3 years ago

What is m/e ratio???????????

Roman55 [17]

Answer: Hello,Mass ratio charge is.....................

Explanation: In mass spectroscopy, the mass-to-charge ratio (symbols: m/z, m/e) of a cation is equal to the mass of the cation divided by its charge. ... The mass of the molecular ion is equal to the molecular weight of the compound. Thus, the mass-to-charge ratio of the molecular ion is equal to the molecular weight of the compound.

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2 years ago

What principle do we use in writing the formula of an ionic compound such as NaCl or MgI2? How do we know that two iodide ions a

Savatey [412]

Answer:

We know based on the charges of each ion and the fact that they must always sum to 0

Explanation:

Na only has one outer electon to give so it is always +1

Mg has two outer electrons so it always gets +2

Halogens have one "missing" electron in their outer shell so they get a -1

For NaCl (+1) + (-1) = 0

For MgI2 (+2) + 2(-1) = 0

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3 years ago

What is the destiny of an object that has a mass of 20 grams and a volume of 10 millimeters

blondinia [14]

Answer:

2gcm⁻³

Explanation:

Given parameters:

Mass of the object = 20g

Volume = 10mL

Unknown:

Density of the object = ?

Solution:

Density of a body is its mass per unit volume;

Density = $\frac{mass}{volume}$

We need to convert mL to cm³ for the volume

1mL = 1cm³;

10mL is therefore, 10cm³

So;

Density = $\frac{20}{10}$ = 2gcm⁻³

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2 years ago

Part 1: Describe the mass and surface temperature of the supergiant stars.

Julli [10]

Part 1 :- Super gaint star have mass from 10 to 70 solar masses and brightness from 30,000 upto hundreds of thousand times the solar luminosity
blue super giant surface temperature is 20,000 to 50,000 degree Celsius example :0 Rigel its mass is around 20 times the sun mass it give light which 60,000 sun together give .
part 2 :- HR diagram : hertzsprung -Russel diagram ( attached below)

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3 years ago