Write the name and symbol of the ion formedwhen a sulfur atom gains two electrons. a.an aluminum atom loses three electrons. b.a nitrogen atom gains three electrons. c.a calcium atom loses two electrons.

Answer:

Explanation:

The momentum of an object can be found by using the formula

momentum = mass × velocity

From the question we have

momentum = 2 × 9

We have the final answer as

Hope this helps you

The molarity = 0.04 M

The volume = 6.25 ml

Given

25cm³ of 0.1 M H₂SO₄

1.06g Na₂CO₃ in  250cm³ of solution

Required

the molarity and the volume of Na₂CO₃

Solution

Molarity of  Na₂CO₃ :

[tex]\tt \dfrac{1.06/106~mol}{0.25~L}=0.04~M[/tex]

Reaction

H₂SO₄ + Na₂CO₃ ⇒Na₂SO₄ + H₂O + CO₂

mol H₂SO₄ = 25 x 0.1 = 0.25 mlmol= 2.5 x 10⁻⁴ moles of  Na₂CO₃

The volume of solution used :

[tex]\tt V=\dfrac{n}{M}=\dfrac{2.5.10^{-4}}{0.04}=6.25.10^{-3}~L=6.25~ml[/tex]

Answer:

they change the object hehehehe

Answer:

D. Perform repeated trials.

Explanation:

I did the exam and got it correct :D!

Answer:

37.85 liters

Explanation:

they need 10 gallons for a month (2.5*4)

after that, convert gallons to liters (conversion to liters= 3.785)

10*3.7585= 37.85

Answer is 1.41 x 10 with the exponent of 24, atoms

Explanation : Look at the picture i attached.

Answer:

Beta decay is most common in elements with a high neutron to proton ratio. Gamma decay follows the form: In gamma emission, neither the atomic number or the mass number is changed. A high energy gamma ray is given off when the parent isotope falls into a lower energy state.

Explanation:

pls mark me as brainliest

Answer:

The answer is, Strontium

Answer:

Name                         Molybdenum

Atomic Mass                95.94 atomic mass units

Number of Protons 42

Number of Neutrons 54

Number of Electrons 42

Explanation:

Answer:

Bbbbb eg2020

Explanation:

Bbbbb

Answer:

c

Explanation:

I think that's the answer

Answer:

D

Explanation:

at a point somewhere along the equator

In the case when the Sun appears to be directly overhead at noon should be along with the equator.

It is considered to be the imaginary line that should be arounded with the middle of the planet or the celestial body. It is halfway that lies between the  North Pole and the South Pole, at 0 degrees latitude. In the equator, it divides the planet into a Northern Hemisphere and a Southern Hemisphere

Therefore, based on the above explanation, the option d is correct.

Learn more about sun here: https://brainly.com/question/20827000

The question is incomplete, the complete question is;

In this stoichiometry problem, determine the percentage yield:

Excess aluminum metal reacts with aqueous nickel(II) sulfate to produce aqueous aluminum sulfate and nickel as a precipitate. In this reaction 108 g of aluminum were combined with 464 g of nickel(II) sulfate to produce 274 g of aluminum sulfate.

Answer:

80%

Explanation:

The reaction equation is;

2Al(s) + 3NiSO4(aq) --------> Al2(SO4)3 + 3Ni(s)

Since Al is in excess then NiSO4 is the limiting reactant.

Number of moles in 464 g of NiSO4 = mass/ molar mass

Molar mass of NiSO4 = 155 g/mol

Number of moles = 464g/155g/mol = 2.99 moles

Number of moles of Al2(SO4)3 = mass/molar mass

molar mass = 342 g/mol

Number of moles = 274g/342g/mol = 0.8 moles

From the reaction equation;

3 moles of NiSO4 yields 1 mole of Al2(SO4)3

2.99 moles of NiSO4 yields 2.99 * 1/3 = 1 mole of Al2(SO4)3

% yield = actual yield/ theoretical yield * 100/1

actual yield =  0.8 moles of Al2(SO4)3

Theoretical yield = 1 mole of Al2(SO4)3

% yield = 0.8/1 * 100 = 80%

In this exercise we have to use the knowledge of reaction to calculate the required percentage, in this way we find that:

[tex]80\%[/tex]

The reaction equation is;

[tex]2Al(s) + 3NiSO_4(aq) \rightarrow Al_2(SO_4)_3 + 3Ni(s)[/tex]

Since Al is in excess then NiSO4 is the limiting reactant. Now knowing that the data informed is:

From the reaction equation;

[tex]\% yield = actual\ yield/ theoretical\ yield * 100/1\\\% yield = 0.8/1 * 100 = 80%[/tex]

See more about reaction at brainly.com/question/3664113

Answer:

negative and positive i think

Explanation:

Hello, It's me Moriah Elizabeth!

Answer:

When the number of electrons does not equal the number of protons, the atom is ionized.

Answer:

is number 1

Explanation:

cause i know

Answer:

10 electrons

Explanation:

The d sublevel has 5 orbitals, so can contain 10 electrons max. And the 4 sublevel has 7 orbitals, so can contain 14 electrons max. In the picture below, the orbitals are represented by the boxes. You can put two electrons in each box.

Answer:

10

Explanation:

you're welcome

Answer:

arsenous acid

Explanation:

Answer:

a substrate is surface or material on or from an organism lives, grows, or obtains its nourishment.

Explanation:

Hey I hope this helps.....

Answer:

You can find the mass of water by multiplying the density of water by its volume.

mass = Density x volume

Explanation:

It is very easy to find the mass of water once you know the formula of density. "Density" refers to mass per unit volume.

Density (ρ) = [tex]\frac{mass}{volume}[/tex]

Therefore, mass = ρ x volume

The density of water is 1 kg/L.

For example, if the volume of water is 500 ml, then you can get its mass by multiplying 500 ml by 1 kg/L.

Let's convert 500 ml to Liter first.

500 ml x [tex]\frac{1 L}{1,000 ml}[/tex] = 0.5 L

Now, let's compute.

mass = ρ x volume

mass = 1 kg/L x 0.5L

mass = 0.5 kg

The mass of a 500-ml water is 0.5 kg.

Answer:

Explanation:

.......

Answer:

Gas

Explanation:

Solid= Particles are really tight (Example: Ice Cube) Has a fixed shape

Liquid= Particles flow freely but is of constant volume.(Liquid fills it's container. Example: Water) No fixed shape

Gas= Particles move freely can fill its container has NO FIXED SHAPE or NO FIXED VOLUME(Example: Oxygen) Particels move FASTEST

Answer:

5 ohms of resistance

Explanation:

15/3=5

Balanced equation

P4(s) +6Cl2(g) ⇒4PCl3(l) + energy

Given

Reaction(unbalnced)

P4(s) +Cl2(g) ⇒PCl3(l) + energy

Required

Balanced equation

Solution

aP4(s) +bCl2(g) ⇒PCl3(l) + energy

P, left=4a, right=1⇒4a=1⇒a=1/4

Cl, left=2b, right=3⇒2b=3⇒b=3/2

The equation becomes:

1/4P4(s) +3/2Cl2(g) ⇒PCl3(l) + energy x 4

P4(s) +6Cl2(g) ⇒4PCl3(l) + energy

Answer:

4 moles of HCl are produced.

Explanation:

Given data:

Mass of hydrogen = 4 g

Number of moles of HCl = ?

Solution:

H₂ +  Cl₂   →    2HCl

Number of moles of hydrogen:

Number of moles = mass/molar mass

Number of moles = 4 g/2 g/mol

Number of moles = 2 mol

now we will compare the moles of hydrogen and HCl.

                 H₂        :        HCl

                  1          :          2

                  2         :         2/1×2 = 4 mol

Thus, 4 moles of HCl are produced.

Answer:

I assume you mean as in elements

A metal "A metal is a material that, when freshly prepared, polished, or fractured, shows a lustrous appearance, and conducts electricity and heat relatively well. Metals are typically malleable or ductile." (wiki)

a non-metal "In chemistry, a nonmetal is a chemical element that mostly lacks the characteristics of a metal. Physically, a nonmetal tends to have a relatively low melting point, boiling point, and density. A nonmetal is typically brittle when solid and usually has poor thermal conductivity and electrical conductivity." (wiki)

Explanation:

Answer:

On the periodic table, the metals are usually on the left and middle side and nonmetals on the right side. nonmetals tend to be either a liquid or gas at room temperature and metals are usually solids at room temperature.

Explanation:

Answer:

they represent their own atoms

Answer:

Elements

Explanation:

Answer:

Sunlight

Explanation:

My science teacher has told us that plants need the sun to photosynthesis. And even though their is a lot of sun, they need to compete for it still.