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2 years ago

Think fast! An element has 25 protons and 22 electrons. It has a charge of...

Chemistry

2 answers:

leva [86]2 years ago

6 0

Answer:

Ummmm wow lol TBH IDK this lol

Explanation:

KATRIN_1 [288]2 years ago

5 0

Answer:

+3 charges

Explanation:

Protons - Electrons

25 - 22 = 3

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A container of argon with a volume of 22 ml has a pressure of 101.0 kPa.

Alexeev081 [22]

Answer:

The new pressure is 44.4 kPa.

Explanation:

We have,

Initial volume, $V_1=22\ ml$

Initial pressure, $P_1= 101.0\ kPa$

It is required to find the new pressure when the volume is increased to 50 ml. The relationship between pressure and volume is known as Boyle's law.

$PV=k\\\\P_1V_1=P_2V_2$

$P_2$ is final pressure

$P_2=\dfrac{P_1V_1}{V_2}\\\\P_2=\dfrac{22\times 101\times 10^3}{50}\\\\P_2=44440\ Pa\\\\P_2=44.4\ kPa$

So, new pressure is 44.4 kPa.

6 0

2 years ago

if you burn a piece of wood you will feel heat see water vapor and be left with ashes how come the matter was not destroyed

Elanso [62]

The matter wasn't destroyed because albert einsteins theory of the black hole says that matter cannot be destroyed if it is burned into the same color of a black hole. this eqation proves my thesis:

²²↑↑Ф $\left \{ {{y=2} \atop {x=2}} \right. \left \{ {{y=2} \atop {x=2}} \right. \left \{ {{y=2} \atop {x=2}} \right. \left \{ {{y=2} \atop {x=2}} \right.$

3 0

2 years ago

Read 2 more answers

A chemistry student weighs out 0.027 kg of an unknown solid compound X and adds it to 550. mL of distilled water at 30.° C. Afte

QveST [7]

Answer:

1. Yes

2.The solubility of X is 34.55g/L

Explanation:

Solubility of solute refers to how readily a solute will dissolve in a solvent at a particular temperature. Its the amount of moles or grams required to saturate 1dm $^{3}$ or 1 Litre of water.

From the problem, when the liquid was drained off and amount of X which didn't dissolve was measured, it weighed 0.008kg, this means out of 0.027kg, 0.027-0.008 actually dissolved

= 0.019kg*1000 = 19g.

if 19g is required to saturate 550mL at 30°C,

then $\frac{19*1000}{550}$ will saturate 1L

= 34.545g will saturate 1Litre

The solubility thus is 34.55g/L

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2 years ago

What is the standard unit that astronomers use to measure the size of a star

g100num [7]

Parsecs or abbreviated pc

7 0

2 years ago

Pls help if you only know the correct answer! Thanks!!

Likurg_2 [28]

Answer:

1. H=2, O=1

2. H=4, O=2

3. C=1, O=1

a. reactants C=1, O=2

b. products C=1, O=2

a. reactants H=4, O=2

b. products H=4, O=2

a. reactants C=1, O=1, H=4

b. products C=1, O=1, H=4

4 0

1 year ago