3 years ago

Hi :) can someone answer this thank u

Chemistry

1 answer:

scoray [572]3 years ago

3 0

Add all the carbon atoms (3) then add hydrogen atoms (8)
C3H8

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Which of the following does not describe a characteristic of carbon

8_murik_8 [283]

What are the options? I can try to give you an answer if options are provided.

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3 years ago

dentify the correct formula for the following ionic compounds. - sodium chloride - magnesium chloride - calcium oxide - lithium

andrey2020 [161]

Explanation:

The chemical formula of an ionic compound can be written by using the symbols of the respective cations and anions.

The overall charge on the molecule should be zero.

Hence, the total charge of cations=total charge of anions.

The symbols of the given molecules are shown below:

sodium chloride ---- NaCl

magnesium chloride --- $MgCl_2$

calcium oxide ---- CaO

lithium phosphide---- $Li_3P$

aluminum sulfide ----- $Al_2S_3$

calcium nitride---- $Ca_3N_2$

5 0

3 years ago

PLS HELP!!!!

Mashcka [7]

Answer:

the 3rd answer

7 0

2 years ago

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What is the name of the compound (NH4)2SO4

GREYUIT [131]

The answer is Ammonium sulfate

3 0

2 years ago

an unknown molecule is found to consist of 24.2% carbon by mass, 4.0% hydrogen by mass and the remaining mass is due to chlorine

Paha777 [63]

Answer:

C3 H6 Cl 3

Explanation:

C -24.2%

H - 4.0%

Cl - (100-24.2 - 4.0)=73.8 %

We can take 100g of the substance, then we have

C -24.2 g

H - 4.0 g

Cl - 73.8 g

Find the moles of these elements

C -24.2 g/12.0 g/mol =2.0 mol

H - 4.0 g/1.0 g/mol = 4. 0 mol

Cl - 73.8 g/ 35.5 g/mol = 2.1 mol

Ratio of these elements gives simplest formula of the substance

C : H : Cl = 2 : 4 : 2 = 1 : 2 : 1

CH2Cl

Molar mass (CH2Cl) = 1*12.0 +2*1.0 + 1*35.5 = 49.5 g/mol

Real molar mass = 150 g/mol

real molar mass/ Molar mass (CH2Cl) = 150 /49.5=3

So, Real formula should be C3 H6 Cl 3.

4 0

3 years ago

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