All categories

4 years ago

What mass of water is produced from the complete combustion of 2.80×10−3 g of methane?

Chemistry

1 answer:

agasfer [191]4 years ago

7 0

The answer would be 0.0028 :)

You might be interested in

Identify what the electron dot diagram tells you about bonding

Alex_Xolod [135]

The electron dot diagram tells us about how many electrons are being shared between atoms. Also, the number of valence electron to be shared corresponds to the group number the element belongs. Say for example H2O, hydrogen has one valence electron and oxygen has two valence electrons.

5 0

3 years ago

Read 2 more answers

In a chemical reaction, sulfur (S8) combines with copper to give a pure compound. If you start with 1.000 g of sulfur (S8) and o

Airida [17]

Answer: The empirical formula for the given compound is $Cu_2S$

Explanation:

We are given:

Mass of pure compound containing copper and sulfur = 4.963 g

Mass of S = 1.000 g

Mass of Cu = (4.963 - 1.000) g = 3.963 g

To formulate the empirical formula, we need to follow some steps:

Step 1: Converting the given masses into moles.

Moles of Copper = $\frac{\text{Given mass of Copper}}{\text{Molar mass of Copper}}=\frac{3.963g}{63.55g/mole}=0.0624moles$

Moles of Sulfur = $\frac{\text{Given mass of Sulfur}}{\text{Molar mass of Sulfur}}=\frac{1.000g}{32g/mole}=0.0312moles$

Step 2: Calculating the mole ratio of the given elements.

For the mole ratio, we divide each value of the moles by the smallest number of moles calculated which is 0.0312 moles.

For Copper = $\frac{0.0624}{0.0312}=2$

For Sulfur = $\frac{0.0312}{0.0312}=1$

Step 3: Taking the mole ratio as their subscripts.

The ratio of Cu : S = 2 : 1

Hence, the empirical formula for the given compound is $Cu_2S$

8 0

3 years ago

In synthesis reactions, there are always more _____________ than ________________.

nydimaria [60]

Answer:

Explanation:

always more reactants than products

4 0

3 years ago

Account for the difference in the masses of coke and diet coke

nignag [31]

Answer:

regular Coke is denser than diet Coke. Each can of regular Coke has a mass of about 384 g. and diet coke has about 370 g.

6 0

3 years ago

What features do all the resonance forms of a molecule or ion have in common?

NeX [460]

Answer/Explanation:

Things that will vary include the distribution of electrons between atoms, lone pairs, and bonds, the number of single vs double or triple bonds, and the formal charges on atoms in the structure.

All resonance forms of the same molecule or ion must have the same number of atoms, connected in the same way, and the same number of total electrons.

5 0

3 years ago

Read 2 more answers