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4 years ago

4.True or false. P(E) + P(Ec) = 1.

1 answer:

iogann1982 [59]4 years ago

4 0

4.) True:
Since
P(E) = 1 - P(Ec)
P(E)+P(Ec)=1
If you think of it as the chances of you getting e or not getting e, then it's a 100% chance of either one happening.

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How does the sun heat<br> the side of the Earth<br> facing away from it?

Evgen [1.6K]

Answer:

The sun radiates energy in all directions.

Explanation:

Most of it dissipates into space, but the tiny fraction of the sun's energy that reaches Earth is enough to heat the planet and drive the global weather system by warming the atmosphere and oceans

3 0

4 years ago

The pressure inside an aerosol can is 3.80 atm at 25.0°C. If the temperature is increased from 25.0°C to 100.0°C, what would be

ladessa [460]

Answer:

B. 4.76 atm

Explanation:

$P_1$ = Initial pressure = 3.8 atm

$T_1$ = Initial temperature = $25+273.15\ \text{K}$

$P_2$ = Final pressure

$T_2$ = Final temperature = $100+273.15\ \text{K}$

From Gay Lussac's law we have

$\dfrac{P_2}{P_1}=\dfrac{T_2}{T_1}\\\Rightarrow P_2=P_1\dfrac{T_2}{T_1}\\\Rightarrow P_2=3.8\times\dfrac{100+273.15}{25+273.15}\\\Rightarrow P_2=4.76\ \text{atm}$

The pressure inside the can would be $4.76\ \text{atm}$ .

7 0

3 years ago

Describe an example where materials are prepared as fluids so that they can be moved more easily.

OleMash [197]

Liquefied Natural Gas

Explanation:

Gases are usually liquefied in the downstream sector during crude processing. These natural gases are products of distillation of crude oil in fractionating columns. Some of them are also found in geological formations.

To easily transport these gases, they are liquefied in vessels that carries them from one place to another.
Liquefaction is the process of converting a gas or solid into a liquid form.
Gases are usually compressed under very high pressure into vessels through which can make them easier to transport.
Gases do not have a fixed volume and they typically assume the volume of any container they are taken into.

Learn more:

Natural gas brainly.com/question/4344417

#learnwithBrainly

7 0

3 years ago

A block of ice is cooled from -0.5 degrees Celsius to -10.1 degrees Celsius. Calculate the temperature change, delta T, in degre

ss7ja [257]

Delta T= T final - T initial
Tfinal= -101.1 °C
Tinitial= -0.5 °C
•Delta T = -101.1°C - (-0.5°C)
=100.6°C

Kelvin= °C + 273
= -100.6 + 273
= 172.4 Kelvin

3 0

3 years ago

Consider the reaction.

vovangra [49]

Answer: The value of Keq for the reaction expressed in scientific notation is $1.6\times 10^{-5}$

Explanation:

Equilibrium constant is defined as the ratio of concentration of products to the concentration of reactants each raised to the power their stoichiometric ratios.

For the given chemical reaction:

$2NOCl(g)\rightarrow 2NO(g)+Cl_2(g)$

The expression for $K_{eq}$ is written as:

$K_{eq}=\frac{[NO]^2\times [Cl_2]}{[NOCl]^2}$

$K_{eq}=\frac{(1.2\times 10^{-3})^2\times (2.2\times 10^{-3})}{(1.4\times 10^{-2})^2}$

$K_{eq}=1.6\times 10^{-5}$

The value of Keq for the reaction expressed in scientific notation is $1.6\times 10^{-5}$

3 0

3 years ago