Is a mixture of stones?

homogeneous or heterogeneous

Answer:density

Explanation:

it’s how’s how dens the ball is

Answer:

In physical changes no new materials are formed and the particles do not change apart from gaining or losing energy

Explanation:

Answer:

Show me the previous question so I can help

The equations for the preparation of C₂H₅Br from alcohol using PX₃ and HX are shown in the attachment below.

a) Preparation of C₂H₅Br from alcohol using PX₃

In PX₃, X refers to the halides (F, Cl, Br etc.). Since the desired ethyl halide is ethyl bromide (C₂H₅Br) , then X in PX₃ will be Br. Therefore, PBr₃ will be used in the reaction as shown in the attachment below.

b) Preparation of C₂H₅Br from alcohol using HX

Also, In HX, X refers to the halides (F, Cl, Br etc.). Since the desired ethyl halide is ethyl bromide (C₂H₅Br), then X in HX will be Br. Therefore, HBr will be used in the reaction as shown in the attachment below.

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Answer:

True.

Explanation:

This is because when the number of protons in the nucleus increases the neutrons needed for a stable nucleus increases even more rapidly.

Best of luck!!!

Answer: Sodium is made up of lots of salt.

Explanation:

Eating a lot of salt can cause your body to retain more water, which can show up on the scale as extra pounds. But we're not just talking about water weight here. High salt diets appear to be linked to higher body fat in particular, the kind of fat that accumulates around your middle.

Answer:

12.5 gm

Explanation:

15 days is three half lives  

100 * (1/2)^3 = 12.5 grams

Answer:ok

Explanation:fish

Answer:

the events of the story

Explanation:

hope this helps

Explanation:

just take the given moles and multiply it with the ratio of molecules to moles to get your answer

The number of nitrogen molecules in 6.0 moles of N2 is = 3.6 × 10²⁴

Avogadro's number( 6.02 × 10²³) is equal to the number of molecules in 1 mole of substance.

That is,

1 mole of N2 = 6.02 × 10²³

6 moles of N2 = 6 × 6.02 × 10²³

= 36.12 × 10²³

= 3.6 × 10²⁴

Therefore, the number of nitrogen molecules in 6.0 moles of N2 is = 3.6 × 10²⁴

Learn more about molecules here:

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Answer:

a molecule of an element is called atomicity

Answer:

V= π ×r² × h

V = 3.14 × (0.9)² × 4

V = 3.14 × 0.81 × 4

V = 10.1736

Mass = Volume × density

M = 10.1736 × 2.6

M = 26.45136 g

Answer:

race, religion, sex, if they are 40 or older, have a disability, pregnancy/childbirth. hope that helped

Note down the formula below

[tex]\boxed{\sf Mass\%\;of\; element=\dfrac{Mass\:of\:the\: element}{Mass\;of\:the\: compound}\times 100}[/tex]

Mass of the compound

[tex]\\ \sf\longmapsto 32+2=34g[/tex]

Mass % of Hydrogen:-

[tex]\\ \sf\longmapsto \dfrac{2}{34}\times 100[/tex]

[tex]\\ \sf\longmapsto \dfrac{1}{17}\times 100[/tex]

[tex]\\ \sf\longmapsto 5.8\%[/tex]

Mass % of Oxygen:-

[tex]\\ \sf\longmapsto \dfrac{32}{34}\times 100[/tex]

[tex]\\ \sf\longmapsto \dfrac{16}{17}\times 100[/tex]

[tex]\\ \sf\longmapsto 94.2\%[/tex]

Answer:

I think its A And C OR D HOPE ITS RIGHT

Explanation: BY THE LOVE YOUR AVTAR

True statements are:

Density increases if the volume of an object decreases and the mass remains the same.

Density increases if the mass of an object increases and the volume remains the same.

Density remains the the same if the mass and volume of an object increases proportional.

Further:

Density = Mass/Volume

1 mole of water = 18g

6 moles of water = 18×6 = 108 g

Answer:

9 days

No explanation needed.

Answer:

developing the atomic theory of matter

Explanation:

Answer:

4.44309 × 109 ( 4443090000 kilometres )

2.760936126 × 109 ( 2760936126 miles)

Please make me the brainliest! !!

Answer:

The distance of Mercury to Neptune = The distance from sun to Neptune - The distance from sun to Mercury

= 2.798 . 10^9 - 3.598 . 10^7

= 2.798 . 10^9 - 0.03598 . 10^9

= 10^9 ( 2.798 - 0.03598 )

= 2.76202 . 10^9 miles

.

.

Hope it helps

Hydrogen: 1

Helium: 2

Lithium: 2•1

Beryllium:2•2

Boron: 2•3

Carbon: 2•4

Nitrogen:2•5

Oxygen:2•6

Fluorine: 2•7

Neon:2•8

Sodium: 2•8•1

Magnesium: 2•8•2

Aluminium: 2•8•3

Silicon: 2•8•4

Phosphorus: 2•8•5

Sulfur: 2•8•6

Chlorine: 2•8•7

Argon: 2•8•8

Potassium: 2•8•8•1

Calcium: 2•8•8•2

Please give me brainliest, I spent a lot of time doing this

Answer:

this is from another brainliest answers.

Explanation:

Ionic compounds need to be molten or in solution for electrolysis to work. This is because the charged particles that make them up (ions) need to be free to move to the electrodes.

Answer:

3. A physical property is a characteristic of a substance that can be observed or measured without changing the identity of the substance

4.extensive and intensive properties.

Answer:

hypothesis = A tentative explanation for a question, testable through experiments.

theory = An explanation supported by many experiments, answers "why".

law = A relationship in nature supported by many experiments.

Explanation:

Answer:

Not all mixtures are solutions. A solution is a specific term that describes an even or homogeneous mixture of a solute, the substance being mixed, in a solvent, the substance that is in a greater amount in which the solute dissolves. All solutions are mixtures because it is two or more substances mixed together.

Answer:

heat is released in going from reactants to products

Explanation:

hope this helps