All categories

3 years ago

BRAINLIESTTT ASAP!! PLEASE HELP ME :)

2 answers:

6 0

2CH4+O2-> 2CH3OH

A combustion reaction involves only hydrogen, carbon, and oxygen where O2 is always a reactant. So, the only one possible is the one stated above.

beks73 [17]3 years ago

6 0

Answer:

2CH4+O2 to 2CH3OH

Explanation:

In combustion it:

is fueled by hydrocarbons

is similar to synthesis reactions

and is a combination of oxygen and fuel.

You might be interested in

The solid fuel in the booster stage of the space shuttle is a mix- ture of ammonium perchlorate and aluminum powder. Upon igni-

nataly862011 [7]

Answer:

For A: The mass of aluminium required will be 183 g

For B: The mass of alumina produced will be $6.63\times 10^6g$

Explanation:

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

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$ .....(1)

For a:

Given mass of $NH_4ClO_4$ = 1.325 kg = 1325 g (Conversion factor: 1 kg = 1000 g)

Molar mass of $NH_4ClO_4$ = 117.50 g/mol

Putting values in equation 1, we get:

$\text{Moles of }NH_4ClO_4=\frac{1325g}{117.50g/mol}=11.28mol$

For the given chemical reaction:

$6NH_4ClO_4(s)+10Al(s)\rightarrow 5Al_2O_3(s)+3N_2(g)+6HCl(g)+9H_2O(g)$

By stoichiometry of the reaction:

6 moles of $NH_4ClO_4$ reacts with 10 moles of aluminium

So, 11.28 moles of $NH_4ClO_4$ will react with = $\frac{10}{6}\times 11.28=6.77mol$ of aluminium

Now, calculating the mass of aluminium by using equation 1, we get:

Molar mass of aluminium = 27.00 g/mol

Moles of aluminium = 6.77 moles

Putting values in equation 1, we get:

$6.77mol=\frac{\text{Mass of aluminium}}{27.00g/mol}\\\\\text{Mass of aluminium}=(6.77mol\times 27.00g/mol)=183g$

Hence, the mass of aluminium required will be 183 g

For b:

Given mass of aluminium = $3.500\times 10^3=3.5\times 10^6g$ (Conversion factor: 1 kg = 1000 g)

Molar mass of aluminium = 27.00 g/mol

Putting values in equation 1, we get:

$\text{Moles of aluminium}=\frac{3.5\times 10^6g}{27.00g/mol}=1.3\times 10^5mol$

For the given chemical reaction:

$6NH_4ClO_4(s)+10Al(s)\rightarrow 5Al_2O_3(s)+3N_2(g)+6HCl(g)+9H_2O(g)$

By stoichiometry of the reaction:

10 moles of aluminium produces 5 moles of alumina

So, $1.3\times 10^5mol$ of aluminium will react with = $\frac{5}{10}\times 1.3\times 10^5=6.5\times 10^4mol$ of alumina

Now, calculating the mass of alumina by using equation 1, we get:

Molar mass of alumina = 101.96 g/mol

Moles of alumina = $6.5\times 10^4mol$

Putting values in equation 1, we get:

$6.5\times 10^4mol=\frac{\text{Mass of alumina}}{101.96g/mol}\\\\\text{Mass of alumina}=(6.5\times 10^4mol\times 101.96g/mol)=6.63\times 10^6g$

Hence, the mass of alumina produced will be $6.63\times 10^6g$

6 0

3 years ago

A teacher makes the following statement. "Gasoline boils at a relatively low temperature (about 150°C). The kerosene is removed

Natali5045456 [20]

Answer: The most likely topic the teacher is taking about is distillation of a mixture

Explanation:

The correct question is:

Gasoline boils at a relatively low temperature (about 150°C). The kerosene is removed at around 200°C, followed by diesel oil at 300°C and fuel oil at around 370°C,"

What topic is the teacher most likely talking about?

a. distillation of a mixture

b. filtration of a pure substance

c.evaporation of a mixture

d. sorting of a pure substance

Explanation:

Distillation is the process of separating components of a mixture based on different boiling points.

To separate a mixture of liquids, the liquid can be heated to force components, which have different boiling points, into the gas phase. The gas is then condensed back into liquid form and collected.

Types of distillation include simple distillation and fractional distillation(different volatile 'fractions' are collected as they are produced). Simple distillation may be used when the boiling points of two liquids are significantly different from each other or to separate liquids from solids or nonvolatile components. Fractional distillation is used when the boiling points of the components of a mixture are close to each other.

From the question, it's the components of petroleum that are being separated, which can be carried out using fractional distillation.

The first component that is collected is

Gasoline which boils at a relatively low temperature (about 150°C), followed by

kerosene which is removed at around 200°C, followed by diesel oil at 300°C and then fuel oil at around 370°C.

3 0

3 years ago

Please Help I will reward brainliest

djverab [1.8K]

Radioactive decay is based on the fact that there are radioactive elements in some rocks that decay at a unpredictable rate

5 0

4 years ago

Read 2 more answers

At equilibrium, the amount of product is equal to amount of reactant True o False

nydimaria [60]

The correct answer is true

3 0

3 years ago

How many grams of lithium are in a 1320 [mAh] cell phone battery? Note that [mAh] is a unit of charge.

AURORKA [14]

Answer:

0.396 grams of lithium

Explanation:

Lithium-ion batteries have the main feature of using lithium salts as a "bridge" between the positive pole (anode) to the negative (cathode) to allow the passage of energy that will give life to our device. In the case of lithium polymer batteries, the difference is that the lithium salt is contained in a polymer, or gel, to keep it safe from spills.

In both cases, when the battery is discharging, lithium ions travel from the cathode to the anode through their "bridges" to supply the energy until all the ions are in the anode, it is at this time when the battery is out of stock The ions travel in the opposite direction during charging (from the anode to the cathode).

The calculation used to determine the amount of lithium that the lithium cell batteries have is as follows:

0.3 x amp hour capacity = g of lithium

where amp hour = Ah

In our case:

0.3 x 1.32 = 0.396 g of lithium

5 0

3 years ago