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3 years ago

A chemical symbol represents the ____ of an element

Chemistry

1 answer:

Firdavs [7]3 years ago

5 0

A chemical symbol represent the number of an element

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Suppose that you melt 24 ml of ice. What is the volume of liquid water that results?

serious [3.7K]

The answer to this would be 22 mL

8 0

3 years ago

On hot days, you may have noticed potato chip bags seem to inflate, even though they have not been opened. If I have a 250 mL ba

MrRa [10]

The first law here is Charles's law and the new volume will be 285.08 mL

Converting degree celsius to kelvin when solving gas laws problem.

kelvin = degree celsius + 273.15

Kelvin = 19 + 273.15 = 292.15 K

Kelvin = 60 + 273.15 = 333.15 K

Given Data:

V1 (initital volume) = 250 ml

T1 (initial temperature) = 19°c or 292.15 K

V2 (final volume) = unknwon ?

T2 (final temperature) = 60°c or 333.15 K

Charles' law which states that volume is directly proportional to temperature when the amount and pressure of the gas are constant.

Applying the formula, we get

V2 = V1T2 / T1

= 250 ml × 333.15 K / 292.15 K (cancel kelvin unit)

= 83287.5 ml / 292.15

= 285.08 ml

The new volume will be 285.08 ml

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6 0

1 year ago

What occurs when a magnesium atom becomes a magnesium ion

Karo-lina-s [1.5K]

The electrons are lost.

4 0

3 years ago

Read 2 more answers

Which plant part makes most of the food? A. Roots B. Fruit C. Flower D. Leaf

NISA [10]

D leafs because it contains chlorophyll

3 0

3 years ago

Dolomite is a carbonate of magnesium and calcium. Analysis shows that 7.81 g of dolomite contains 1.70 grams of Ca. Fluorite is

andrew11 [14]

Answer:

The richer source of calcium is fluorite.

Explanation:

Percentage of element in compound :

$=\frac{\text{mass of element}}{\text{Mass of compound}}\times 100$

1. Dolomite is a carbonate of magnesium and calcium:

Given mass of dolomite = 7.81 g

Mass of calcium present in given mass of dolomite = 1.70 g

Percentage of calcium in Dolomite:

$=\frac{1.70 g}{7.81 g}\times 100=21.77\%$

2. Fluorite is a mineral of calcium and fluorine:

Given mass of fluorite = 2.76 g

Mass of fluorine present in given mass of fluorite = 1.34 g

Percentage of fluorine in fluorite :

$=\frac{1.34 g}{2.76 g}\times 100=48.55\%$

Percentage of calcium in fluorite = 100% - 48.55 % = 51.45%

Percentage of calcium in fluorite > Percentage of calcium in Dolomite

51.455 > 21.77%

So, the richer source of calcium is fluorite.

7 0

3 years ago