All categories

3 years ago

What is the correct balanced chemical equation for this reaction?

Chemistry

2 answers:

Lapatulllka [165]3 years ago

7 0

B)
CH₄ + 2O₂ ---> CO₂ + 2H₂O

natita [175]3 years ago

6 0

Answer:

B......

Explanation:

You might be interested in

Which non-metal or metalloid is the most reactive?

Neko [114]

C. Borin is the answer

4 0

3 years ago

Read 2 more answers

Given the following list of densities, which materials would float in a molten vat of lead provided that they do not themselves

vampirchik [111]

Answer:

b. glass and charcoal

Explanation:

Step 1: Given data

Density of Pb: 11.4 g/mL

Density of Glass: 2.6 g/mL

Density of Au: 19.3 g/mL

Density of charcoal: 0.57 g/mL

Density of platinum: 21.4 g/mL

Step 2: Determine which material will float in molten lead

Density is an intrinsic property of matter. Less dense materials float in more dense materials. The materials whose density is lower than that of lead and will therefore float on it are glass and charcoal.

8 0

3 years ago

How many moles of oxygen (O2) are present in 33. 6 L of the gas at 1 atm and 0°C? 1. 5 2 22. 4 32.

oee [108]

The number of moles of oxygen in the gas is 1.5 L.

The correct option is (A).

<h3>What are moles? </h3>

The mole is the International System of Units' foundation unit of material quantity.

Given,

The volume of gas is 33.6 L

Pressure is 1 atm.

Temperature is 0°C

Molar gas volume is 22.4 L

There is no temperature and pressure is 1 atm.

By formula of moles, volume is divided by molar mass

$\bold{\dfrac{33.6}{22.4 } =1.5\; mole}$

Thus, option A is correct. 1.5 L.

Learn more about gas, here:

brainly.com/question/13123721

3 0

2 years ago

What is the first step to determine the sequence of filling electron configurations of an element?

faust18 [17]

Basically, the arrangement of electrons in electronic configuration follows three principles:

1. Aufbau Principle
You start from the highest energy level to the lowest. The arrangement is: <span>1s<2s<2p<3s<3p<4s<3d<4p<5s<4d<5p<6s<4f<5d<6p<7s<5f<6d<7p.

2. Hund's Rule
Each box in the configuration can hold up to 2 electrons. This rule tells you to fill all boxes of one particular subshell with 1 electron first, before double occupying them.

3. Pauli's Exclusion Principle
This rule tells you that the two electrons in a box shall always have opposite spins, represented by one half-arrow up and one half-arrow down.</span>

6 0

3 years ago

Determine the frequency of radiation whose wavelength is 7.67 x 10^-7 cm. Then, determine the amount of energy in the radiation.

dimulka [17.4K]

Answer:

They frequency = 3.9 * 10^16 Hz

The amount of energy E = 2.58 *10^-17 J

Explanation:

Step 1: Data given

wavelength is 7.67 * 10^-7 cm

Step 2: Calculate the frequency

f = c / λ

⇒ with λ = the wavelength in nm = 7.67 nm

⇒ with c = the speed of light = 3.00 * 10^8 m/s

⇒ f = the frequency = TO BE DETERMINED

f = (3.00 * 10^8 m/s) / 7.67 * 10^-9 m

f = 3.9 * 10 ^16 /s = 3.9 * 10^16 Hz

They frequency is 3.9 * 10^16 Hz

Step 3: Calculate the amount of energy

E = h *f

⇒ with E = the amount of energy (in joule)

⇒ h = Planck's constant = 6.626 *10^-34 J*s

⇒ with f = the frequency

E = 6.626 *10^-34 J*s * 3.9 * 10^16 Hz

E = 2.58 *10^-17 J

8 0

3 years ago