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3 years ago

Above is a solubility curve for KNO3.

Chemistry

2 answers:

Andrei [34K]3 years ago

8 0

Answer:

Hey did u get the answer I need ?!

Explanation:

KengaRu [80]3 years ago

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question:

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What is the purpose of the scientific method? ON APEX LEARNING

Arturiano [62]

The purpose of the scientific method "to use an experiment to test a scientific theory".

<u>Answer:</u> Option C

<u>Explanation:</u>

Researchers use the scientific method when conducting experiments to collect observable, empirical data in a hypothesis-related experiment , the findings that tend to justify or oppose a theory. It's also very important that other researchers can repeat and independently verify the conclusions, logic, and experiments.

Scientific method retains inductive reasoning its position. Scientists use this to formulate theories and hypotheses. In order to adapt the ideas to particular situations, deductive reasoning allows them to do so. Overall scientific methods have become path of analyzing different processes, going in our environment.

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3 years ago

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Solve the equation for x.4+2(x-4)=-7(x+7)

OverLord2011 [107]

Answer:

$x=-5$

Explanation:

we have

$4+2(x-4)=-7(x+7)$

Solve for x

That means----> Isolate the variable x

Applying the distributive property both sides

$4+2(x)+2(-4)=-7(x)-7(7)$

Remember that

$(+1)(-1)=-1$

$4+2x-8=-7x-49$

Combine like terms left side

$2x-4=-7x-49$

Adds 7x both sides

$2x-4+7x=-7x-49+7x$

$9x-4=-49$

Adds 4 both sides

$9x-4+4=-49+4$

$9x=-45$

Divide by 9 both sides

$x=-5$

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3 years ago

A helium filled weather balloon has a volume of 806 L at 20.9°C and 753 mmHg. it is released and rises to an altitude of 6.8 km,

OLEGan [10]

<h3>Answer:</h3>

1257.45 L

<h3>Explanation:</h3>

We are given;

Initial volume of Helium gas, V1 as 806 L
Initial temperature of Helium gas,T1 as 20.9°C
Initial pressure of Helium gas, P1 as 753 mmHg
Pressure of Helium at the altitude 6.8 km, P2 as 417 mmHg
Temperature of Helium gas at the altitude 6.8 Km, T2 as -19.1°C

But, K = °C + 273.15

Therefore, T1 = 294.05 K and T2 = 254.05 K

We are required to calculate the new volume of the balloon at 6.8 km.
To determine the new volume we are going to use the combined gas law.
According to the combined gas law, $\frac{P1V1}{T1}=\frac{P2V2}{T2}$

Thus, rearranging the formula;

$V2=\frac{P1V1T2}{P2T1}$

$V2=\frac{(753)(806L)(254.05K)}{(417)(294.05)}$

$V2=1257.45L$

Therefore, the volume of the balloon at an altitude of 6.8 km is 1257.45 L

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3 years ago

What does two bonded flurione atoms form?

Archy [21]

2 Fluorine atoms covalently bonded with each other, each sharing an equal number of a single, one valence electron to achieve a stable octet, would form a diatonic fluorine gas. It is a diatomic molecule, a molecule consisting of 2 atoms that are the same, in this case fluorine.

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3 years ago

A bowl of trail mix and a bowl of soup are examples of what type of matter?

BaLLatris [955]

I believe it would be compound.

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4 years ago

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