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4 years ago

Help please and if you say for points I will report you :)

Chemistry

2 answers:

frutty [35]4 years ago

7 0

Answer:

radiation

Explanation:

White raven [17]4 years ago

6 0

Answer:

radiation

Explanation:

You might be interested in

Many chemistry problems result in equations of the form

Gnom [1K]

Answer:

When this equation is solved, the two values of the unknown are 0.0643 and -0.082

Explanation:

Given

$1.77 * 10^{-2} = \frac{x^2}{0.298 - x}$ --- the actual equation

Required

The values of x

We have:

$1.77 * 10^{-2} = \frac{x^2}{0.298 - x}$

Cross Multiply

$1.77 * 10^{-2} * (0.298 - x)= x^2$

Multiply both sides by 100

$1.77 * (0.298 - x)= 100x^2$

Open bracket

$0.52746 - 1.77x= 100x^2$

Rewrite as:

$100x^2 + 1.77x - 0.52746 =0$

Using quadratic formula:

$x = \frac{-b \± \sqrt{b^2 - 4ac}}{2a}$

Where:

$a = 100; b = 1.77; c = -0.52746$

So, we have:

$x = \frac{-1.77 \± \sqrt{1.77^2 - 4*100*- 0.52746 }}{2*100}$

$x = \frac{-1.77 \± \sqrt{214.1169}}{2*100}$

$x = \frac{-1.77 \± 14.63}{200}$

Split

$x = \frac{-1.77 + 14.63}{200}\ or\ x = \frac{-1.77 - 14.63}{200}$

$x = \frac{12.86}{200}\ or\ x = \frac{-16.40}{200}$

$x = 0.0643\ or\ x = -0.082$

3 0

3 years ago

1 pts

soldier1979 [14.2K]

Answer:

144 g

Explanation:

Use the mole ratio of 4 mol CO2 for every 9 mol O2 to convert from mol O2 to mol CO2. Then use the molar mass of CO2 to convert from mol of CO2 to grams of CO2.

7.34 mol O2 • (4 mol CO2 / 9 mol O2) • (44.01 g CO2 / 1 mol CO2) = 144 g CO2

5 0

3 years ago

Read 2 more answers

Drinking water should have sufficiently low levels of __________ to prevent disease. What is the missing word in this sentence?

ELEN [110]

For water to be drinkable, it must have sufficiently low levels of dissolved salts and microbes.

3 0

3 years ago

What makes 3Ag2S+2Al->Al2S3+6Ag(s) oxidized and reduced

Vikentia [17]

It makes it thinner to calcite the rhythm

5 0

2 years ago

At which temperature is the average kinetic energy of the molecules in one liter of nitrogen gas greatest? A) -40 degrees C B) 2

Yanka [14]

D) 60°C

Explanation:

The molecules of Nitrogen gas will have the highest average kinetic energy when their temperature is the highest.

According the kinetic molecular theory, the temperature of gases is directly proportional to their average kinetic energy.

The higher the temperature, the more kinetic energy they possess.

To find out the highest temperature from the given options, we need to solve and express all the given options in a single unit of temperature.

K = 273 + °C

Let us convert all to Kelvin;

-40°C;

K = 273 + (-40) = 233K

60°C;

K = 273 + 60 = 333K

We can see that 60°C has the highest temperature in kelvin and this will furnish the gas with the greatest average kinetic energy.

learn more:

kinetic molecular theory brainly.com/question/12362857

#learnwithBrainly

8 0

3 years ago