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2 years ago

Separating mixtures: filtration

Chemistry

1 answer:

Ymorist [56]2 years ago

5 0

hi these are the answers :)

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Select the correct answer. Two charged objects, A and B, exert an electric force on each other. What happens if the distance bet

VikaD [51]

Answer:

The electric force between them decreases

Explanation:

The force between two charged particle is given by :

$F=\dfrac{kq_1q_2}{r^2}$

Where

r is the distance between charges

If the distance between the charges is increased, the electric force gets decreased as there is an inverse relation between force and distance.

Hence, the correct option is (c) "The electric force between them decreases"

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3 years ago

Answer truthfully:))

Elina [12.6K]

Answer:

Formula: $Velocity \: V = f \lambda \\ Solution: = 5 \times 0.8 \\ = 4 \: {ms}^{ - 1}$

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3 years ago

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Based on Table I, which compound dissolves in water by an exothermic process? *

lord [1]

Answer:

NH4NO3

and

NaOH

hope it helps :)

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3 years ago

Gaseous compound Q contains only xenon and oxygen. When a 0.100 g sample of Q is placed in a 50.0-mL steel vessel at 0 C, the pr

Paladinen [302]

The question is incomplete, here is the complete question:

Gaseous compound Q contains only xenon and oxygen. When a 0.100 g sample of Q is placed in a 50.0-mL steel vessel at 0°C, the pressure is 0.230 atm. What is the likely formula of the compound?

A. XeO

B. $XeO_4$

C. $Xe_2O_2$

D. $Xe_2O_3$

E. $Xe_3O_2$

Answer: The chemical formula of the compound is $XeO_4$

Explanation:

To calculate the molecular weight of the compound, we use the equation given by ideal gas equation:

PV = nRT

Or,

$PV=\frac{w}{M}RT$

where,

P = Pressure of the gas = 0.230 atm

V = Volume of the gas = 50.0 mL = 0.050 L (Conversion factor: 1 L = 1000 mL)

w = Weight of the gas = 0.100 g

M = Molar mass of gas = ?

R = Gas constant = $0.0821\text{ L atm }mol^{-1}K^{-1}$

T = Temperature of the gas = $0^oC=273K$

Putting value in above equation, we get:

$0.230\times 0.050=\frac{0.100}{M}\times 0.0821\times 273\\\\M=\frac{0.100\times 0.0821\times 273}{0.230\times 0.050}=194.9g/mol\approx 195g/mol$

The compound having mass as calculated is $XeO_4$

Hence, the chemical formula of the compound is $XeO_4$

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4 years ago

How can you get the knowledge of minerals chemical makeup or use?

Gre4nikov [31]

A. To determine how to break down minerals

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3 years ago

Separating mixtures: filtration​

Separating mixtures: filtration