if you could place a piece of sold silver into a container of liquid silver, would it float or sink? explain your answer

Answers

Answer 1

Answer: a solid has more 'stuff' in it in the same volume, it would take up less space and make it more weight per amount of space
this would make it denser than the liquid silver
that means that it would sink

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In a solution at 25°C, the [H+] is 3.5 × 10−6 M. What is the [OH−]? 3.5 × 10−20 M 2.9 × 10−9 M 1.0 × 10−7 M 3.5 × 10−6 M

Answers

Hope it helped you out.

the answer is b on plato

How can there be more than 1000 different atoms when there are only about 100 different elements?

Answers

Actually, there are only about 100 atoms that have been yet discovered. But each element has many different kinds of atom. For instance, carbon. Do you know carbon has more than 30 or 50 different types of atoms? Well, how? There are isotopes. Don't think that there is only one carbon atom which has 6 electrons and 6 protons and 6 neutrons. There are more. C-13 has 6 electrons and 6 protons and 7 neutrons. While, C-14 has 6 electrons and 6 protons and 8 neutrons. I just showed you three stable isotopes of carbon(element). But, what is really an isotope?? Did you notice that all of these atoms had the same number of protons and electron but different numbers of neutrons? This is really an isotope. Well, if an atom takes a few more electrons or gives off a few electrons, it still stays the same element/ atom type. Just like that an element can have atoms of different neutron number. It may be less or more. It doesn't affect the atom much: just makes an isotope. But it does affect the atomic mass number or radioactivity of an atom. So, an element can have many different forms of isotopes of its atoms. In this way, being only 100 atoms, there can 1000 atoms or (more than that!).

To make it more clear-

Definition of ISOTOPE: any of two or more forms of a chemical element, having the same number of protons and electrons in the nucleus, or the same atomic number, but having different numbers of neutrons

HOPE YOU UNDERSTOOD THE MATTER:-))

There can be more atoms because atoms make about everything and those atoms make up the elements and since,atoms are in everything there can be different kinds of atoms to make up certain things.

How many grams of sodium oxide can be produced when 55.3 g Na react with 64.3 g O2? Unbalanced equation: Na + O2 → Na2O

Show, or explain, all of your work along with the final answer.

Answers

Answer : The amount of sodium oxide produced is, 74.40 grams

Solution : Given,

Mass of sodium = 55.3 g

Mass of $O_2$ = 64.3 g

Molar mass of sodium = 23 g/mole

Molar mass of $O_2$ = 32 g/mole

Molar mass of $Na_2O$ = 61.9 g/mole

First we have to calculate the moles of sodium and oxygen.

Moles of Na = $\frac{\text{ given mass of Na}}{\text{ molar mass of Na}}= (55.3g)/(23g/mole)=2.404moles$

Moles of $O_2$ = $\frac{\text{ given mass of }O_2}{\text{ molar mass of }O_2}= (64.3g)/(32g/mole)=2.009moles$

Now we have to calculate the limiting and excess reagent.

The balanced chemical reaction will be,

$4Na+O_2\rightarrow 2Na_2O$

From the balanced reaction we conclude that

4 moles of sodium react with 1 mole of oxygen

2.404 moles of sodium react with $(2.404)/(4)=0.601$ moles of oxygen

Excess moles of oxygen = 2.009 - 0.601 = 1.408 moles

That means sodium is a limiting reagent and oxygen is an excess reagent.

Now we have to calculate the moles of sodium oxide.

From the reaction we conclude that,

4 moles of sodium react to give 2 moles of sodium oxide

2.404 moles of sodium react to give $(2)/(4)* 2.404=1.202$ moles of sodium oxide

Now we have to calculate the mass of sodium oxide.

$\text{Mass of }Na_2O=\text{Moles of }Na_2O* \text{Molar mass of }Na_2O$

$\text{Mass of }Na_2O=(1.202moles)* (61.9g/mole)=74.40g$

Therefore, the amount of sodium oxide produced is, 74.40 grams

Given the two amounts of reactants, we get the limiting reactant between the two. We convert each to mole and divide them to their corresponding stoichiometric coefficient. we balance first above, that is 4Na+O2=2Na2O. hence, for Na that is 0.60 mole and oxygen is 2.00 mole. We follow the smaller amount, Na, hence the amount of sodium oxide in grams is 74.53 grams.

A sample of gas in a balloon has an initial temperature of 2.0 ∘C and a volume of 1.53×103 L . If the temperature changes to 99 ∘C , and there is no change of pressure or amount of gas, what is the new volume, V2, of the gas?

Answers

(V1/T1)=(V2/T2) this is Charles' law where T is in Kelvin
So: (1.53x10^3)/(275K) = V2/(372K)
V2= 2.07x10^3L

When gold is hammered it "squishes". Iron Pyrite isknown as "Fool's Gold". It is not..........
like gold,
but shatter into many pieces when struck by a
hammer, Iron Pyrite is..........

Answers

Explanation:

When gold is hammered it "squishes". Iron Pyrite is

known as "Fool's Gold". It is not..........

like gold,

but shatter into many pieces when struck by a

hammer, Iron Pyrite is..........

Final answer:

Gold is a malleable metal, able to deform without breaking when hammered. On the contrary, Iron Pyrite or 'Fool's Gold' is brittle; it shatters when struck due to its lack of malleability.

Explanation:

Gold is known as a malleable metal, which means it can be hammered or bent into different shapes without breaking. In contrast, Iron Pyrite, often known as 'Fool's Gold', is brittle, meaning it will shatter or break when struck by a hammer.

Malleability is a physical property of metals that allows them to be hammered or rolled into thin sheets. Gold is one of the most malleable metals and can be hammered into extremely thin sheets.

On the other hand, a brittle material like Iron Pyrite lacks this property of malleability. Instead of deforming under stress, it will fracture, this is why it shatters into many pieces when struck.

Learn more about Gold and Iron Pyrite here:

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What is the law of conservation of mass

Answers

The law of conservation of mass States that mass in an isolation system is neither created nor destroyed by chemical reactions or physical transformations and the mass of the products in a chemical reaction must equal the mass of the reactants.

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