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3 years ago

URGENT WILL GIVE BRAINLEIST In two or more complete sentences explain how to balance the chemical equation,

2 answers:

4 0

CH4+ (2)O2—CO2+ (2)H2O
1 C 1
4 H 2 > 4
4 < 2 O 3 > 4

You leave [C] alone and only focus on [O] and [H]
You’ll have to place 2 on the right side in front of H2O because there is a H4 on the left side
This makes H4 on the right side and O2 which then makes the total of [O] on the right side four
You then will need to place a 2 in front of O2 to make the total of [O] on the left side four as well

Pani-rosa [81]3 years ago

3 0

Answer:

you add the atoms together

Explanation:

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Fill in the coefficients that will balance the following reaction:

Kazeer [188]

$\\ \rm\Rrightarrow H_2SO_4+2KOH\longrightarrow K_2SO_4+2H_2O$

On both sides

Hence balanced

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2 years ago

What is the frequency of yellow light, which has a wavelength of 5.56 x 10^-7 m?

Mnenie [13.5K]

The answer is B 5.40 x 10^14 Hz

7 0

2 years ago

For the same reaction above, if 32 grams of AlCl3 is combined with excess AgNO3, how many grams of AgCl can be made

ella [17]

Answer:

103.2 g of AgCl can be made in the reaction

Explanation:

We state the reaction to analyse the problem:

AlCl₃ + 3AgNO₃ → 3AgCl + Al(NO₃)₃

We convert the mass of chloride to moles:

32 g . 1mol/ 133.34g = 0.240 moles

Ratio is 1:3. See the stoichiometry

1 mol of aluminum chloride can produce 3 moles of AgCl

Then, 0.240 will produce (0.240 . 3)/1= 0.720 moles.

We convert the moles to mass: 0.720 mol . 143.32g/1mol = 103.2 g

8 0

3 years ago

The boiling points for the homonuclear diatomic molecules in the halogen family are 85 K, 238 K, 332 K, 457 K and 610 K. Which s

patriot [66]

Answer:

$Cl_{2}$ has boiling point of 238 K

Explanation:

Boiling point depends on different intermolecular force such as molecular wight, dipole-dipole attraction force, hydrogen bonding, ionic attraction force.

Homonuclear diatomic molecules are covalent non-polar molecules and thereby free from dipole-dipole attraction force, hydrogen bonding and ionic interaction forces.

Hence, boiling point of homonuclear diatomic molecules depends solely on molecular weight.

We know, higher the molecular weight of a molecule, higher will be its boiling point. This phenomenon can be realized in terms of increasing london dispersion force with increase in molecular weight.

Decreasing order of molecular weight of halogen molecules :

$I_{2}$ > $Br_{2}$ > $Cl_{2}$ > $F_{2}$

So, decresing order of boiling point of halogen molecules:

$I_{2}$ > $Br_{2}$ > $Cl_{2}$ > $F_{2}$

Hence $Cl_{2}$ has boiling point of 238 K

4 0

3 years ago

All of the following statements are correct except The conversion of compounds into elements is a chemical change. The conversio

aleksandrvk [35]

Answer:

The conversion of liquid water into gaseous water is a chemical change

Explanation:

A chemical change occurs when there is a chemical reaction, so there'll be changed in the compounds, such as forming new ones, forming its elements, or elements forming compounds.

A physical change occurs when there is a change in the state of aggregation of the compound, it means that it changes its physical state. Solid for liquid, liquid for solid, liquid for gas, gas for liquid, solid for gas, and gas for solid are the physical changes.

So the evaporation of water, or its conversion in gaseous water, is a physical change, not a chemical change.

6 0

3 years ago