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3 years ago

Please help with both of these lol

Chemistry

1 answer:

ZanzabumX [31]3 years ago

7 0

Answer: 1. Unbalanced

2. Atoms cannot be created or destroyed only rearranged

Explanation:

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Can producers function without sunlight? Why or Why not?

givi [52]

The answer is no because producers need the energy from the sun in order to produce. Hope this helped!

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3 years ago

Which best describes how latitude affects climate?Equator is hotter with sun's rays Mountains permanently block winds

jenyasd209 [6]

prevents extreme heat and cold in coastal regions.

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3 years ago

How many grams are in 0.02 moles of beryllium iodide, Bel2?

Flura [38]

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3 years ago

assuming that each human being has 60 trillion body cells in that the earths population is 6 billion calculate the total number

sesenic [268]

3.6 x 10²³

Explanation:

Given parameters:

Number of cell per body = 60 trillion body cells

Population of the earth = 6 billion

Unknown:

Total number of living human body cells = ?

Solution:

To solve this problem, simply find the product:

Total number of living human body cells = number of cell per body x population of the earth

1 trillion = 1 x 10¹²

60 trillion = 6 x 10¹³

1 billion = 1 x 10⁹

6 billion = 6 x 10⁹

Total number of living human body cells = 6 x 10¹³ x 6 x 10⁹

= 6 x 6 x 10⁽¹³⁺⁹⁾

= 36 x 10²² or 3.6 x 10²³

learn more:

Product brainly.com/question/10541435

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4 years ago

Order the follow processes from (1) the least work done by the system to (5) the most work done by one mole of an ideal gas at 2

quester [9]

Answer : The order of process from (1) the least work done by the system to (5) the most work done by the system will be:

(1) < (5) < (3) < (4) < (2)

Explanation :

The formula used for isothermally irreversible expansion is :

$w=-p_{ext}dV\\\\w=-p_{ext}(V_2-V_1)$

where,

w = work done

$p_{ext}$ = external pressure

$V_1$ = initial volume of gas

$V_2$ = final volume of gas

The expression used for work done in reversible isothermal expansion will be,

$w=-nRT\ln (\frac{V_2}{V_1})$

where,

w = work done = ?

n = number of moles of gas = 1 mole

R = gas constant = 8.314 J/mole K

T = temperature of gas = $25^oC=273+25=298K$

$V_1$ = initial volume of gas

$V_2$ = final volume of gas

First we have to determine the work done for the following process.

(1) An isothermal expansion from 1 L to 10 L at an external pressure of 2.5 atm.

$w=-p_{ext}(V_2-V_1)$

$w=-(2.5atm)\times (10-1)L$

$w=-22.5L.atm=-22.5\times 101.3J=-2279.25J$

(2) A free isothermal expansion from 1 L to 100 L.

$w=-nRT\ln (\frac{V_2}{V_1})$

$w=-1mole\times 8.314J/moleK\times 298K\times \ln (\frac{100L}{1L})$

$w=-11409.6J$

(3) A reversible isothermal expansion from 0.5 L to 4 L.

$w=-nRT\ln (\frac{V_2}{V_1})$

$w=-1mole\times 8.314J/moleK\times 298K\times \ln (\frac{4L}{0.5L})$

$w=-5151.97J$

(4) A reversible isothermal expansion from 0.5 L to 40 L.

$w=-nRT\ln (\frac{V_2}{V_1})$

$w=-1mole\times 8.314J/moleK\times 298K\times \ln (\frac{40L}{0.5L})$

$w=-10856.8J$

(5) An isothermal expansion from 1 L to 100 L at an external pressure of 0.5 atm.

$w=-p_{ext}(V_2-V_1)$

$w=-(0.5atm)\times (100-1)L$

$w=-49.5L.atm=-49.5\times 101.3J=-5014.35J$

Thus, the order of process from (1) the least work done by the system to (5) the most work done by the system will be:

(1) < (5) < (3) < (4) < (2)

8 0

3 years ago