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3 years ago

9

Which equation using element symbols correctly describes the reaction: "One molecule of methane plus two molecules of diatomic o

xygen react to form two molecules of water and one molecule of carbon dioxide?"

2 answers:

MrMuchimi3 years ago

8 0

Answer:

CH4+2O2→2H2O+CO2

8090 [49]3 years ago

5 0

What the other comment said it’s right :)

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Can somebody answer this please

Murrr4er [49]

The answer should be A.

7 0

3 years ago

How many moles of solute are present in 2 L of a 25M potassium nitrate (KNO3) solution?

Maksim231197 [3]

Mole= Molarity. Volume(L) = (25)(2)= 50 moles

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3 years ago

A 200 g of sugar was dissolved in 100 ml of water describe the solution

yarga [219]

Answer:

b

Explanation:

mark me as brainliest have a great day

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2 years ago

What is the freezing point depression of a solution that contains 0.705?

Sveta_85 [38]

Colligative properties calculations are used for this type of problem. Calculations are as follows:<span>
</span>

<span>ΔT(freezing point) = (Kf)m
ΔT(freezing point) = 1.86 °C kg / mol (0.705)
ΔT(freezing point) = 1.3113 °C

</span>

<span>
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<span>Hope this answers the question. Have a nice day.</span>

6 0

3 years ago

An FM radio station broadcasts electromagnetic radiation at a frequency of 103.4 MHz (megahertz; MHz =106sâ€“1). Calculate the w

kap26 [50]

Answer:

$Wavelength=2.899\ m$

Explanation:

The relation between frequency and wavelength is shown below as:

$c=frequency\times Wavelength$

c is the speed of light having value $2.998\times 10^8\ m/s$

Given, Frequency = 103.4 MHz = $103.4\times 10^{6}\ Hz$ ( as 1 MHz = 10⁶ Hz)

Thus, Wavelength is:

$Wavelength=\frac{c}{Frequency}$

$Wavelength=\frac{2.998\times 10^8}{103.4\times 10^{6}}\ m$

$Wavelength=2.899\ m$

5 0

3 years ago