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2 years ago

Which is an unreliable source?

1 answer:

5 0

The source that is unreliable is an advertisement for acne medication claims it can clear up acne in less than one week.

<h3>What are citable sources?</h3>

Citable sources are those sources that are gotten from places that are proven to be of good standards and not from mere claims such as:

Science journals

professional organizations

government agencies

Therefore, the source that is unreliable is an advertisement for acne medication claims it can clear up acne in less than one week.

Learn more about citations here:

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You might be interested in

How many moles of gas would occupy 22.4 L at 273K in one arm?

andrew-mc [135]

Answer:

1 mol

Explanation:

Using the general gas law equation as follows:

PV = nRT

Where;

P = pressure (atm)

V = volume (L)

n = number of moles (mol)

R = gas law constant (0.0821 Latm/molK)

T = temperature (K)

According to the provided information in the question;

V = 22.4L

T = 273K

P = 1 atm

R = 0.0821 Latm/molK

n = ?

Using PV = nRT

n = PV/RT

n = (1 × 22.4) ÷ (0.0821 × 273)

n = 22.4 ÷ 22.4

n = 1mol

4 0

3 years ago

At a high temperature, equal concentrations of 0.160 mol/L of H2(g) and I2(g) are initially present in a flask. The H2 and I2 re

Nikitich [7]

Explanation:

The given reaction is as follows.

$H_{2} + I_{2} \rightarrow 2HI$

Initial : 0.160 0.160 0

Change : -x -x 2x

Equilibrium: 0.160 - x 0.160 - x x

It is given that $[H_{2}]$ = [0.160 - x] = 0.036 M

and, $[I_{2}]$ = [0.160 - x] = 0.036 M

so, x = (0.160 - 0.036) M

= 0.124 M

As, [HI] = 2x.

So, [HI] = $2 \times 0.124$

= 0.248 M

As it is known that expression for equilibrium constant is as follows.

$K_{eq} = \frac{[HI]^{2}}{[H_{2}][I_{2}]}$

= $\frac{(0.248)^{2}}{(0.036)(0.036)}$

= 47.46

Thus, we can conclude that the equilibrium constant, Kc, for the given reaction is 47.46.

7 0

3 years ago

The H 2 produced in a chemical reaction is collected through water in a eudiometer. If the pressure in the eudiometer is 760.0 t

siniylev [52]

Answer:

the pressure (torr) of theH₂ gas is 736.2 torr

Explanation:

Given that

The H₂ gas produced in a chemical reaction is collected through water in a eudiometer; during this process, the gas collected contains some droplets of water vapor along with these gas.

So; the total pressure in the eudiometer = Pressure in the H₂ gas - Pressure of the water vapor

Where;

$P_{Totsl}$ = total pressure in the eudiometer = 760.0 torr

$P_{H_2}$ = Pressure in the H₂ gas = ???

$P_{H_2O}$ = Pressure in the water vapor = 23.8 torr

Now:

$P_{Totsl}$ = $P_{H_2}$ + $P_{H_2O}$

- $P_{H_2}$ = + $P_{H_2O}$ - $P_{Totsl}$

$P_{H_2}$ = - $P_{H_2O}$ + $P_{Totsl}$

$P_{H_2}$ = (- 23.8 + 760) torr

$P_{H_2}$ = 736.2 torr

Thus; the pressure (torr) of theH₂ gas is 736.2 torr

8 0

4 years ago

Where is the energy in the products of photosynthesis?

serious [3.7K]

The bonds of a glucose molecule store chemical energy

3 0

3 years ago

Read 2 more answers

2Al (s) + 3Cl2 (g) --> 2AlCl3 (s) (balanced)

Triss [41]

Answer:

Percent yield = 65.2 %

Explanation:

The reaction determines this:

2 moles of Al react to 3 moles of chlorine gas in order to produce 2 mol of aluminum chloride.

We determine the moles of chlorine:

52 g . 1mol /70.9g = 0.733 moles of Cl₂

3 moles of gas can produce 2 moles of salt

Then, our 0.733 moles may produce (0.733 . 2) / 3 = 0.489 moles of AlCl₃

We convert moles to mass to predict the 100 % yield

0.489 mol . 133.3 g /mol = 65.19 g

Percent yield = (Yield produced / 100 % yield) . 100

Percent yield = (42.5 g / 65.19g) . 100 = 65.2 %

3 0

3 years ago