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4 years ago

O, li, c which electrons experience the greatest effective nuclear charge? express your answer as a chemical formula.

1 answer:

5 0

The effective nuclear charge of an atom = total electrons - inner electrons For O, ENC = 8 - 2 = 6 For Li, ENC = 3 - 2 = 1 For C, ENC = 6 - 2 = 4 The electrons in O experience the greatest effective nuclear charge and that is why O is smaller than C (which is smaller than Li).

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10 o 20 30 40 90 60 80 50 g 70 0 1 2 3 4 6 9 7 8

Nookie1986 [14]

Answer:

Explanation:

yes of courseeee i cant balance with the nearest milligram

6 0

3 years ago

A solution containing 8.3 g of a nonvolatile, nondissociating substance dissolved in 1.00 mol of chloroform, CHCl3, has a vapor

Margaret [11]

Answer:

a. Xm = 0.0229

b. 0.0234 moles

c. 354.1 g/mol

Explanation:

ΔP = P° . Xm

ΔP = P° - P', where P° is vapor pressure of pure solvent and P', vapor pressure of solution-

This is the formula for lowering vapor pressure.

If we apply the data given: 523 Torr - 511 Torr = 523 . Xm

Xm = ( 523 Torr - 511 Torr) / 523 Torr → 0.0229

Xm = Mole fraction of solute → Moles of solute / Total moles (sv + solute)

We can make this equation to determine moles of solute

0.0229 = Moles of solute / Moles of solute + 1

0.0229 (Moles of solute + 1) = Moles of solute

0.0229 = Moles of solute - 0.0229 moles of solute

0.0229 = 0.9771 moles of solute → 0.0229 / 0.9971 = 0.0234 moles

Molecular mass of solute → g/mol → 8.3 g / 0.0234 mol = 354.1 g/mol

7 0

3 years ago

Using what you have learned about the three forms of writing chemical equations, classify each of the presented equations as eit

suter [353]

Explanation:

Molecular equation: Chemical equation in which molecular formula of reactants and products are written

Complete ionic equation:Chemical equation in which ionic from if reactants reactants and products are written along with spectator ions (ions present on both sides of equation).

Net ionic equation :Chemical equation in which only ions of those reactant are written which giving product without spectator ions (ions present on both sides of equation).

(a) $Ca^{2+}(aq) + SO_4^{2-}(aq)\rightarrow CaSO_4(s)$

net ionic equation.

(b) $CuSO_4(aq) + 2KOH(aq)\rightarrow Cu(OH))_2(s) + K_2SO_4(aq)$

Molecular equation

Net ionic equation.

(d) $Ag^+(aq) + NO_{3}^-(aq) + I^-(aq)\rightarrow AgI(s) + NO_{3}^-(aq)$

Complete ionic equation

3 0

4 years ago

Cornstarch, a carbohydrate consisting of hydrogen, carbon, and oxygen:

morpeh [17]

The statement above is TRUE.
Cornstarch is a carbohydrate which is made up of hydrogen, carbon and oxygen. Cornstarch is a refined carbohydrate, which is made up of pure starch; no nutrient is added to it. Corn starch is usually obtained from the endosperm of corn.

7 0

3 years ago

What is woven into farbic?

LenaWriter [7]

Woven fabric is any textile formed by weaving. Woven fabrics are often created on a loom, and made of many threads woven on a warp and a weft. Technically, a woven fabric is any fabric made by interlacing two or more threads at right angles to one another.

4 0

3 years ago