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2 years ago

This is an example of which type of short-term human-induced environmental change?

Chemistry

1 answer:

Mashutka [201]2 years ago

7 0

Answer:

The short term human induced environmental changes are pollution and deforestation. The term deforestation can be defined as the cutting down of trees in huge amount. The reason can be cutting down of trees for human settlement. Pollution can be defined as the undesirable in the environment.

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How would you separate a mixture of water, sand, salt and iron filings into its four component parts

kipiarov [429]

Magnet to remove the iron, filter paper (or some filter that could trap sand) to remove the sand, and heat up the salt and water, causing the water to evaporate to separate them.

3 0

3 years ago

Someone help me am i right or wrong

steposvetlana [31]

Answer:

You right!

Explanation:

3 0

2 years ago

Read 2 more answers

The constant volume heat capacity of a gas can be measured by observing the decrease in temperature when it expands adiabaticall

miv72 [106K]

Answer:

The value is $C_p = 42. 8 J/K\cdot mol$

Explanation:

From the question we are told that

$\gamma = \frac{C_p }{C_v}$

The initial volume of the fluorocarbon gas is $V_1 = V$

The final volume of the fluorocarbon gas is $V_2 = 2V$

The initial temperature of the fluorocarbon gas is $T_1 = 298.15 K$

The final temperature of the fluorocarbon gas is $T_2 = 248.44 K$

The initial pressure is $P_1 = 202.94\ kPa$

The final pressure is $P_2 = 81.840\ kPa$

Generally the equation for adiabatically reversible expansion is mathematically represented as

$T_2 = T_1 * [ \frac{V_1}{V_2} ]^{\frac{R}{C_v} }$

Here R is the ideal gas constant with the value

$R = 8.314\ J/K \cdot mol$

$248.44 = 298.15 * [ \frac{V}{2V} ]^{\frac{8.314}{C_v} }$

=> $C_v = 31.54 J/K\cdot mol$

Generally adiabatic reversible expansion can also be mathematically expressed as

$P_2 V_2^{\gamma} = P_1 V_1^{\gamma}$

=> $[ 81.840 *10^3] [2V]^{\gamma} = [202.94 *10^3] V^{\gamma}$

=> $2^{\gamma} = 2.56$

=> $\gamma = 1.356$

$\gamma = \frac{C_p}{C_v} \equiv 1.356 = \frac{C_p}{31.54}$

=> $C_p = 42. 8 J/K\cdot mol$

3 0

3 years ago

(BRAINLIEST ANSWER GUARANTEED) Write the chemical formula for the following compound

Minchanka [31]

Answer:

HNO3

Explanation:

Try looking up on the internet-

"Science compound creator" and plug in the compounds it gives, and it will give you a formula.

3 0

3 years ago

Read 2 more answers

Mn2+

snow_lady [41]

The molarity of the stock Mn²⁺ ions is 0.0288 M

Based on the dilution formula;

The molarity of A is 0.00144 M
The molarity of B is 0.0000576 M
The molarity of C is 0.000001152 M

<h3>What is the molarity of a solution?</h3>

The molarity of a solution is the number of moles of a solute dissolved in a given volume of solution in liters.

Molarity = number of moles/volume

The molarity of the stock solution is:

moles of Mn²⁺ ions = mass / molar mass

molar mass of Mn²⁺ ions = 55.0 g/mol

moles of Mn²⁺ ions = 1.584 / 55

moles of Mn²⁺ ions = 0.0288 moles

molarity of Mn²⁺ ions = 0.0288 / 1

molarity of Mn²⁺ ions = 0.0288 M

The dilution formula is used to determine the molarities of A, B, and C.

C₁V₁ = C₂V₂

C₂ = C₁V₁ / V₂

Where;

C₁ = initial molarity
V₁ = initial volume
C₂ = final molarity
V₂ = final volume

Molarity of A = 50 * 0.0288 / 1000

Molarity of A = 0.00144 M

Molarity of B = 10 * 0.00144 / 250

Molarity of B = 0.0000576 M

Molarity of C = 10 * 0.0000576 / 500

Molarity of C = 0.000001152 M

Learn more about molarity at: brainly.com/question/17138838

#SPJ1

5 0

1 year ago