What determines the type of element that an atom makes?

Answers

Answer 1

Answer: Only the number of protons determine the type of atom. Elements can have more or less neutrons and electrons and still be the same general type of element.

Answer 2

Answer: The number of protons, neutrons and electrons an atom has determines what element it is. Hydrogen, for example, has one proton, no neutrons and one electron; the element sulfur has 16 protons, 16 neutrons and 16 electrons.

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If it takes 25 mL of 0.05 M HCl to neutralize 345 mL of NaOH solution, what is the concentration of the NaOH solution? (Round answer to 4 decimal places) *

Answers

Answer:

Concentration of NaOH= 0.0036 M

Explanation:

Given data:

Volume of HCl = 25 mL

Concentration of HCl = 0.05 M

Volume of NaOH = 345 mL

Concentration of NaOH = ?

Solution:

Formula:

C₁V₁ = C₂V₂

C₁ = Concentration of HCl

V₁ = Volume of HCl

C₂ = Concentration of NaOH

V₂ = Volume of NaOH

Now we will put the values in formula.

C₁V₁ = C₂V₂

0.05 M × 25 mL = C₂ × 345 mL

1.25 M.mL = C₂ × 345 mL

C₂ = 1.25 M.mL/345 mL

C₂ = 0.0036 M

Final answer:

To find the concentration of the NaOH solution, we can use the concept of titration. By using the equation Moles = Concentration * Volume, we can calculate the moles of HCl used and then use the ratio of moles between HCl and NaOH to find the concentration of the NaOH solution.

Explanation:

To find the concentration of the NaOH solution, we need to use the concept of titration. From the given information, it takes 25 mL of 0.05 M HCl to neutralize 345 mL of NaOH solution. We can use the equation Moles = Concentration * Volume to find the amount in moles of HCl used. Then, we can use this information to calculate the concentration of the NaOH solution.

First, let's calculate the moles of HCl used:

Moles of HCl = (0.05 M) x (0.025 L) = 0.00125 mol

Next, we can use the ratio of moles between HCl and NaOH, which is 1:1, to find the moles of NaOH in the solution:

Moles of NaOH = 0.00125 mol

Finally, we can calculate the concentration using the formula:

The concentration of NaOH = (0.00125 mol) / (0.345 L) = 0.00362 M

Learn more about Concentration of NaOH solution here:

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Why is density a characteristic property of matter?

Answers

The density is specific, because each type of matter has a value for the density, being then used to identify the type of matter, like any other type and property specifies. For example water has density 1 g/mL, and no other kind of matter has this value for density.

hope this helps!

What does soil have to do with rock

Answers

Soil is made up of tiny bits of crushed rock and organic material.

Soil is made up of tiny bits and crushed rocks but other than that soil has nothing to do with rocks when people generally think about soil it has to do with farming agriculture etc. nothing to do with rocks. One other thing mining has to do with soil and rocks so probably mining

what is the chemical formula for concentrated plutonium exploding and igniting hydrogen and how could it be stabilized? i'm not doing this IRL, so don't worry!

Answers

Basically, an atomic bomb relying on pure fission like a plutonium bomb works by chain reactions. However, something must initiate the chain of reactions : that's where Hydrogen comes in:

the fission reaction of Uranium is $U+n\rightarrow Sr+Xe+2n$ where n is a neutron. Hydrogen is basically a neutron and an electron; it's thus quite easy to start the reaction with hydrogen.

There is no known way to significantly reduce radioactive decay as far as I know (I might be wrong), or to turn radioactive plutonium into non-radioactive plutonium without tearing the molecules apart.

1.Heat Energy is also known as?2.Energy from the sun is?
3.Three energy transformations in turning on a flashlight?
4.Energy transformation in a car starting and moving?
5.Three non-renewable energy source are? Three renewable energy sources are?
6.Some physical properties of metals and non-metals are?
7.What are the states of matter of the parts of the earth?
8.What are the units of measurement in a metric system?
9.Gravity is?
10.A force is?
11.How do mass and weight differ?
12.What is the super continent called?
13.Why does the sun exert the largest force of gravity?
14.What is a comet?
15.When you increase the distance from the sun what is the length of time it takes to orbit?
16.What is the Cell Theory?
17.What can form from divergent plates?
18.What is the age of the sun?
19.What are the elements that primarily compose of the sun?

BTW: YOU DO NOT HAVE TO ANSWER ALL OF THE QUESTIONS IF YOU DON'T WANT TO!!!

Answers

Can't help you on 1-4...I'm not very good with energy transformations.
5. coal, oil/petroleum, natural gas; water, wind, plant (there's a name for energy sources coming from plants, but I can't remember it)
6. Metals are lustrous, malleable, and good conductors of heat. Nonmetals are dull, brittle, and poor conductors of heat.
7. Crust is solid, mantle is solid, outer core is liquid, inner core is solid.
8. Millimeters, centimeters, meters, kilometers, milliliters, liters...that's all I can think of.
9. Gravity is the force that pulls objects towards the center of something. Earth's gravity keeps us all on the ground.
10. Anything that causes an object to move.
11. Mass is how much stuff is in something; weight is how heavy something is.
12. Pangaea
13. It's the biggest celestial body in our solar system.
14. A comet is gas and dust that shoot through the sky. (I'm really not sure; I just know it's made of gas and dust)
15. ???
16. ???
17. Insurgent and Allegiant plates xD Divergent plates can form subduction zones and rift valleys.
18. about 5 billion years
19. hydrogen and helium

2) Nuclear fusion
3) Chemical energy - electrical energy - light energy
4) Heat energy-mechanical energy-kinetic energy
5) Fossil fuels like coal, petroleum and natural gas
6) Metals : sonorous, ductile Non metals : brittle, non-lustrous
7) Solid liquid, gas
8) Metre, grams, litres, degrees etc.
9) The force the earth exerts in its gravitational field.
10) A force is directly proportional to acceleration
11) Mass is the amount of matter contained in a body and weight is the force which a huge mass ( like that of sun) exerts on a mass.
12) Eurasia
13) It is because the sun has a huge mass ( Gravitational force is directly proportional to difference in mass)
14) Comet is a celestial object of a solar system that orbits the sun. It is not like plamtes, has a comparaitively less mass and orbits are long.
15) It depends on the distance ( directly proportional)
19) Dust, heat, hydrogen and helium.

#11.) When iron rusts in air, iron(III) oxide is produced. How many moles of oxygen react with 77.4 mol of iron in the rusting reaction?4Fe(s) + 3O2(g) → 2Fe2O3(s)

Select one:
a. 58
b. 100
c. 77
d. 120

#13.) For the reaction CH4 + 2O2 → CO2 + 2H2O, how many moles of carbon dioxide are produced from the combustion of 161.0 g of methane?

Select one:
a. 10.03
b. 20.06
c. 2584
d. 3.351