Consider the following balanced equation:
P4(s) + 6F2(e)
4PF3(g)
If 1.25 moles of P4(s) is reacted with 6 moles of F2(g), How many moles of PF3(e) are
produced?
O 5 moles
4 moles
O 6 moles
O 3 moles

Answer:

I⁻

Explanation:

The identity of the element is obtained when the proton number is known.

Mass Number = 127

Neutrons = 74

Number of protons is obtained from;

Protons = Mass Number - Number of Neutrons

Protons = 127 - 74 = 53

The element is Iodine and it's symbol is I.

However, The anion derived from the isotope has 54 electrons

A neutral Iodine should have 53 electrons. This means it has gained a single electron. The symbol is now written as;

I⁻

Answer:

esterification process

Answer:

sodium

Explanation:

nitrogem, phosphorous and potassium are very important to plant growth, but sodium isnt necessary.

Answer:

the answer is sodium hope this helps

Answer:

i think a or b

Explanation:

Answer:

Explanation:Once energy is added to water by heat from the sun, the bonds between the water molecules gain kinetic energy or energy in motion. Then they escape the surface of the liquid and become a gas (water vapor), which rises into atmosphere.

Answer:

Due to conduction, glob A will melt faster

Answer:

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

[tex]volume = \frac{mass}{density} \\[/tex]

From the question we have

[tex]volume = \frac{50.75}{11.3} \\ = 4.491150...[/tex]

We have the final answer as

Hope this helps you

Answer:

B

Explanation:

Both plain and plateau have flat surfaces. However, a plain is located in a low-lying area while a plateau is located on an elevated area. In essence, a plateau can be viewed as an elevated plain or a plain that is bordered by cliffs.

The correct option is B.

Answer:

A. Translucent

Explanation:

Sandy is seeing a light transmission through a translucent medium. Or we can say this is a translucent light transmission.

Answer:

d

Explanation:

Answer:

D. V2O5

Plato Userssssss

Answer:

[tex]\boxed {\boxed {\sf 0.0018 \ mol \ H_2 O }}[/tex]

Explanation:

First, we need to find the molecular mass of water (H₂O).

H₂O has:

Use the Periodic Table to find the mass of hydrogen and oxygen. Then, multiply by the number of atoms of the element.

There are 2 hydrogen atoms, so multiply the mass by 2.

Now, find the mass of H₂O. Add the mass of 2 hydrogen atoms and 1 oxygen atom.

Next, find the amount of moles using the molecular mass we just calculated. Set up a ratio.

[tex]0.032 \ g \ H_2 O* \frac{ 1 \ mol \ H_2 O}{18.0152 \ g \ H_2 O}[/tex]

Multiply. The grams of H₂O will cancel out.

[tex]0.032 * \frac{1 \ mol \ H_2 O}{18.0152 }[/tex]

[tex]\frac{0.032 *1 \ mol \ H_2 O}{18.0152 }[/tex]

[tex]0.00177627781 \ mol \ H_2 O[/tex]

The original measurement given had two significant figures (3,2). We must round to have 2 significant figures. All the zeroes before the 1 are not significant. So, round to the ten thousandth.

The 7 in the hundred thousandth place tells us to round up.

[tex]0.0018 \ mol \ H_2 O[/tex]

There are about 0.0018 moles in 0.032 grams.

Answer:

false

Explanation:

Because in a periodic table they are not located below each other and therefore do not have the same number of electrons.

Answer:

a system in chemical nomenclature and notation of indicating the oxidation state of the significant element in a compound or ion by means of a Roman numeral that is used in parentheses after the name or part of the name designating this element and ending invariably in -ate in the case of an anion and that is placed. Stock nomenclature for inorganic compounds is a widely used system of chemical nomenclature developed by the German chemist Alfred Stock and first published in 1919. In the "Stock system", the oxidation states of some or all of the elements in a compound are indicated in parentheses by Roman numerals.

Explanation:

Brainliest please?

Answer:

The formation of the bond releases energy. This is because the individual hydrogen atoms are more unstable than when they are joined together. Stability brings about the release of energy, and this would be an exothermic reaction.

Answer:

B) 1.6 g

Explanation:

**********************************************

Answer:

0.03697 mol Al₂(SO₄)₃

General Formulas and Concepts:

Chemistry - Atomic Structure

Explanation:

Step 1: Define

12.65 g Al₂(SO₄)₃

Step 2: Identify Conversions

Molar Mass of Al - 26.98 g/mol

Molar Mass of S - 32.07 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of Al₂(SO₄)₃ - 2(26.98) + 3(32.07) + 12(16.00) = 342.17 g/mol

Step 3: Convert

[tex]12.65 \ g \ Al_2(SO_4)_3(\frac{1 \ mol \ Al_2(SO_4)_3}{342.17 \ g \ Al_2(SO_4)_3} )[/tex] = 0.03697 mol Al₂(SO₄)₃

Step 4: Check

We are given 4 sig figs. Follow sig fig rules and round.

We already have 4 sig figs in the final answer, so no need to round.

Answer:

3.5 milligram

Explanation:

From;

N/No = (1/2)^t/t1/2

Where;

N = amount of Po-210 that remains unchanged after 414 days

No = 28.0 milligram of Po-210 originally present

t = 414 days

t1/2 = half life of Po-210 = 138 days

Substituting values;

N/28 = (1/2)^414/138

N/28 = (1/2)^3

N/28 = 1/8

8N = 28

N = 28/8

N = 3.5 milligram

Answer:

I cant see it sorry

Explanation:

Answer:

99.90g

Explanation:

1.506 x 10^24atoms × [tex]\frac{1mol}{6.022*10^{23}atoms}[/tex] × [tex]\frac{39.948grams}{1mol}[/tex] = 99.90grams

multiply the atom by constant and by its molar mass

1.506 x 10²⁴ atoms of argons gas is two moles. One mole of argon weighs 35.9 g. Thus mass of two moles of argon is 89.9 g.

Argon is 18th element in periodic table. It is placed in 18 the group and it is a noble gas or inert gas with completely filled orbitals. The group members of argon are neon, krypton, xenon and radon.

One mole of every substance contains 6.022 × 10²³ atoms. This number is called Avogadro number. Therefore, one mole of every element contains Avogadro number of atoms. The atomic mass of an element is the mass of one mole of that element.

Mass of one mole of argon is 35.9 g. Thus, it contains  6.022 × 10²³ atoms. Hence, the number of moles that contains  1.506 x 10²⁴ atoms is calculated as follows:

no.of moles =  1.506 x 10²⁴  / 6.022 × 10²³

                    = 2.5 moles.

The mass of 2.5 moles of argon is 2.5 × 35.9 = 89.9 g. Hence, the mass of  1.506 x 10²⁴ argon atoms is 89.9 g.

To find more about argon, refer the link:

https://brainly.com/question/133359

#SPJ2

Answer:126.73720999999999

Explanation:

Answer:

126.7 grams/mole of KCl

Answer:

A solubility chart with a list of ions

Explanation:

when mixed with other ions, they can become precipitates or remain aqueous. The following chart shows the solubility of multiple independent and various compounds, in water, at a pressure of 1 atm and at room temperature (approx. 293.15 K).

Answer:

it tells which compounds will dissolve in water

Explanation:

a p e x :)

Answer:

For a given amount of gas held at constant temperature, the product of pressure and

volume is constant.

:

N2+3H2-->2NH3

first we find the number of nitrogen moles

the molar mass for N2 is 14+14=28g/mole

to find the number of moles we divide the mass by the molar mass

n=400/28=14.28 moles

for 1 mole of N2 we use 3 moles of H2, therefore for 14.28 moles of N2 we use 14.28*3=42.84 moles ofH2

to find the mass of H2 we multiply the number of moles by the molar mass

the molar mass of H2 is 2g/mole

2*42.84=85.68g of H2

Answer:

I think 1 option ok basically I am a scientist

Answer:

(3)

Explanation:

Answer:

Power and Nuclear Fision

Answer:

KBr is limiting reactant.

Explanation:

Given data:

Mass of  KBr =4g

Mass of Cl₂ = 6 g

Limiting reactant = ?

Solution:

Chemical equation:

2KBr + Cl₂      →    2KCl + Br₂

Number of moles of KBr:

Number of moles = mass/molar mass

Number of moles = 4 g/ 119 gmol

Number of moles = 0.03 mol

Number of moles of Cl₂:

Number of moles = mass/molar mass

Number of moles = 6 g/ 70 gmol

Number of moles = 0.09 mol

Now we will compare the moles of reactant with product.

              KBr            :            KCl

                2              :              2

            0.03            :            0.03

             KBr            :              Br₂

                2             :               1

             0.03           :          1/2×0.03= 0.015

               Cl₂             :            KCl

                 1              :              2

            0.09            :           2/1×0.09 = 0.18

               Cl₂             :              Br₂

                1              :               1

             0.09           :            0.09

Less number of moles of product are formed by the KBr thus it will act as limiting reactant while Cl₂  is present in excess.