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2 years ago

When logging is carried out in a watershed, a likely effect on the local streams is.

Chemistry

1 answer:

guapka [62]2 years ago

4 0

Answer: A likely effect on the watershed resulting from logging would be <u>increased water temperature. </u>

Explanation: Not only will the removal of trees from the watershed would result in the decrease of Dissolved Oxygen(DO) in the water, but also increase temperature because the leaves of the trees absorb heat, which indirectly decreases the temperature of the river.

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Ethylene enters a reversible, isothermal, steady-flow compressor at 1 bar and 280 K, and exits at 40 bar. Find the required comp

antiseptic1488 [7]

Answer:

Required compressor work W=8560.44 KJ/Kmol

Explanation:

Given that

Initial pressure = 1 bar

$P_1=1\ bar$

Final pressure = 40 bar

$P_2=40\ bar$

Process is isothermal and T=280 K

We know that ,work done in isothermal process given as

$W=P_1V_1\ln \dfrac{P_1}{P_2}$

given taht gas is ideal so

P V =m R T

$W=mRT\ln \dfrac{P_1}{P_2}$

R for ethylene

R=0.296 KJ/kg.K

Now by putting the values

$W=mRT\ln \dfrac{P_1}{P_2}$

$W=1\times 0.296\times 280 \ln \dfrac{1}{40}$

W= -305.73 KJ/kg

Negative sign indicates that work done on the system.

Required compressor work W=305.73 KJ/kg

Molar mass of ethylene M= 28 Kg/Kmol

So W= 305.73 x 28 KJ/Kmol

W=8560.44 KJ/Kmol

Required compressor work W=8560.44 KJ/Kmol

5 0

3 years ago

Is Pluto still a planet ? Explain your answer .

Ipatiy [6.2K]

Hey!

According to scientists across the globe, Pluto is not a "planet", but a "dwarf planet." This also is determined when you were born and taught different ideals, cause everyone changed their sort of learning on planets overtime in our generation. Hope this helped!

8 0

3 years ago

Read 2 more answers

A titanium cube contains 2.86Ã—1023 atoms. What is the edge length l of the cube? The density of titanium is 4.50 g/cm3 . (The v

elena55 [62]

Answer:

I = 1.716 cm

Explanation:

We want the length of the cube. In this case, we know that the volume of a cube is:

V = I³

From here we can solve for I:

I = ∛V (1)

Now, the volume can be obtained using data of density. The expression for density is:

d = m/V

Solvinf for V:

V = m/d (2)

The mass of the cube, can be obtained with the moles and molar mass of titanium:

m = n * MM (3)

And finally, the moles (n) can be obtained using avogadro number:

1 mol ----> 6.02x10²³ atoms (4)

Therefore, to get the length we need to calculate with the atoms of titanium, the moles, then mass, volume and finally the length. Let's calculate the moles of titanium using the ratio of (4):

nTi = 2.86x10²³ / 6.02x10²³ = 0.475 moles

Now, let's calculate the mass using (3) and the molecular mass of titanium which is 47.867 g/mol:

m = 0.475 * 47.867 = 22.737 g

Let's replace this value in (2) to get the volume:

V = 22.737 / 4.5 = 5.053 cm³

Finally, the length using (1):

I = ∛5.053

I = 1.716 cm

This is the length of the cube

4 0

4 years ago

Decreasing the temperature of a reaction decreases the reaction rate because

Elza [17]

The answer u are looking for is b

4 0

4 years ago

Read 2 more answers

A formula unit is defined as the lowest whole number ratio of

mixer [17]

Answer: $BaF_{2}$

Explanation: Because barium is in Group 2, it forms ions with a charge of +2. Fluorine, in Group 17, form ions with a charge of -1. Cross the charges to get the subscripts (Since Ba has a charge of +2, F has a subscript of 2. Because F has a charge of -1, Ba needs a subscript of 1). Therefore, a formula unit of the compound is $BaF_{2}$ .

8 0

3 years ago