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alexandr402 [8]

3 years ago

5

Rather than having its positive charge spread uniformly throughout an atom, the positive particles of an atom are found in a sma

ll, highly concentrated area at the center of an atom.

1 answer:

stira [4]3 years ago

8 0

The nucleus is where the protons and neutrons are found. the mostly space electron cloud is where the electrons are found, surrounding the nucleus.

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g The labels have fallen off three bottles containing powdered samples of metals; one contains zinc, one lead, and the other pla

Y_Kistochka [10]

Answer: this is not a fully developed question where are the answer choices

Explanation:

6 0

3 years ago

A balloon is filled with 30L of helium gas at 1atm.What is the volume when balloon rises to an attitude where the pressure is on

Harrizon [31]

Answer:

$V_2=120L$

Explanation:

Hello!

In this case, since Helium is undergoing a volume-pressure change, according the Boyle's law, we infer the following equation is used:

$P_1V_1=P_2V_2$

Thus, since we are not given the volume at 0.25 atm, we can solve for V2 to do so:

$V_2=\frac{P_1V_1}{P_2}$

Thus, we plug in to obtain:

$V_2=\frac{1atm*30L}{0.25atm}=120L$

Best regards!

7 0

3 years ago

GIVE BRAINLIEST!!!

tino4ka555 [31]

Answer:

you better give me brainliest

Explanation:

Zinc nitrate and calcium nitrate solution can be distinguished by reaction with ammonium hydroxide. Zinc forms a white gelatinous ppt. whereas there is no precipitation of calcium hydroxide even with excess of ammonium hydroxide

7 0

1 year ago

At standard temperature and pressure, what is the volume of one mole of gas?

Stells [14]

Answer:

A. 22.41

Explanation:

goodluck man, just typing a little bit more for the 20 words

6 0

3 years ago

Make the equation equal<br> Fe(NO3)3+KSCN —> Fe(SCN)3 + K(NO3)3

Advocard [28]

Answer:

Fe(NO₃)₃ + 3KSCN → Fe(SCN)₃ + 3KNO₃

Explanation:

Chemical equation:

Fe(NO₃)₃ + KSCN → Fe(SCN)₃ + KNO₃

Balanced Chemical equation:

Fe(NO₃)₃ + 3KSCN → Fe(SCN)₃ + 3KNO₃

Type of reaction:

It is double displacement reaction.

In this reaction the anion or cation of both reactants exchange with each other. In given reaction the cation Fe⁺³ exchange with cation K⁺.

The given reaction equation is balanced so there are equal number of atoms of each elements are present on both side of equation and completely hold the law of conservation of mass.

Double replacement:

It is the reaction in which two compound exchange their ions and form new compounds.

AB + CD → AC +BD

5 0

3 years ago