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The number of unpaired electrons in an atom can be determined from the orbital filling diagrams and correctly applying Hund's rule. Boron has one unpaired electron, while carbon has two, and nitrogen has

Marsl asked Oct 2, 2024

by Marsl

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64.5k views

Consider the statements 1. becl2 is polar 2. the correct lewis structure for BeCl2 3. the correct lewis structure for BeCl2

Hilton asked Oct 2, 2024

by Hilton

8.1k points

1 answer

4 votes

229k views

160 mL of water is added to 40 mL of a 1.0 M NaCl solution. What is the final concentration of NaCl? A) 0.2 M B) 0.4 M C) 0.6 M D) 0.8 M

Pavel Sher asked Oct 2, 2024

by Pavel Sher

7.7k points

1 answer

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Suppose 10.00 mol of Kr gas are pumped into a 1.700 L container at 298.150 K. Calculate the expected pressure based on the ideal gas law, Pideal. Calculate an estimate of the gas pressure one might observe

Gonzalo Gallotti asked Oct 2, 2024

by Gonzalo Gallotti

7.4k points

1 answer

2 votes

110k views

Zn (s) + 2HCl (aq) -ZnCl₂ (aq) + H₂(g) is it a synthesis, decomposition or ionexchange?

WynandB asked Oct 2, 2024

by WynandB

8.9k points

1 answer

2 votes

205k views

3) What range in temperature in Degrees Celsius is practical for each of the following A.) A hot summer day in Wisconsin B.) A cold autumn day in Wisconsin where puddles of water have ice forming on them

Wyatt Barnett asked Oct 2, 2024

by Wyatt Barnett

8.1k points

1 answer

0 votes

148k views

2) The current in a metallic conductor is a flow of A) Negatively charged electrons B) Negatively charged protons C) Positively charged electrons Positively charged protons D)

Lemnisca asked Oct 2, 2024

by Lemnisca

8.9k points

1 answer

1 vote

7.2k views

At what percentage of moisture does wood become very hard to ignite and burn?

Davidmh asked Oct 2, 2024

by Davidmh

9.0k points

1 answer

2 votes

114k views

One of the ingredients in the Native American stomachache remedy derived from common chokecherry is caffeic acid (molar mass 180.16 g/mol). a) Acetic acid b) Caffeine c) Lactic acid d) Sulfuric acid

Woodshy asked Oct 2, 2024

by Woodshy

7.6k points

1 answer

2 votes

196k views

When a solution of HCl is exactly neutralized by NaOH, the number of moles NaOH used will equal what? a) The number of moles of HCl b) Twice the number of moles of HCl c) Half the number of moles of HCl

ComeRun asked Oct 2, 2024

by ComeRun

7.7k points

1 answer

2 votes

216k views

Which ion with a +1 charge has the electron configuration 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶? 1) Na+ 2) Ca+ 3) K+ 4) Mg+

Matt Welch asked Oct 2, 2024

by Matt Welch

8.8k points

1 answer

4 votes

44.9k views

Indoor combustion air supplied by using the "Standard Method" requires a minimum volume of A. 1 cubic foot per 1,000 BTU B. 2 cubic feet per 1,000 BTU C. 3 cubic feet per 1,000 BTU D. 4 cubic feet per

Kenneth Wilke asked Oct 2, 2024

by Kenneth Wilke

9.0k points

1 answer

4 votes

51.2k views

What is the empirical and molecular formula for sucralose? The percent composition is 36.25% C, 4.82% H, 26.75% Cl and 32.19% O. The molar mass is 397.63 g/mole.

Jonathon Kresner asked Oct 2, 2024

by Jonathon Kresner

7.7k points

2 answers

3 votes

24.5k views

Choose the hydration shells that form around a potassium ion when potassium chloride (KCl) dissolves. Notice the positive, negative, and partial charges. 1) A single shell of water molecules with partial

DumpsterDoofus asked Oct 2, 2024

by DumpsterDoofus

7.2k points

1 answer

3 votes

57.8k views

What is the hydronium concentration of a solution at pH 7? Select one: a. 1 x 10+7 M b. 1 x 10-14 M c. 1 x 10-7 M

Joeblade asked Oct 2, 2024

by Joeblade

8.0k points

1 answer

0 votes

178k views

Describe the trend for atomic radius down a group. Use atomic structure (e.g. energy levels, nuclear charge, attraction) to help support your answer.

Jmzagorski asked Oct 2, 2024

by Jmzagorski

8.5k points

1 answer

1 vote

57.6k views

Zeros at the end of a number are not significant if the number contains a decimal point? True or False

Rajan Kashiyani asked Oct 2, 2024

by Rajan Kashiyani

8.2k points

1 answer

5 votes

229k views

Name the chemical used in soap and papermaking. (A) Sodium Chloride (B) Sodium Hydroxide (C) Sodium Carbonate (D) Sodium Bicarbonate

Taum asked Oct 2, 2024

by Taum

8.7k points

1 answer

4 votes

64.9k views

How many atoms of S in 4.30 grams of CS₂?

Jclin asked Oct 2, 2024

by Jclin

8.1k points

1 answer

4 votes

156k views

Determine the volume of an object that has a mass of 455.6 g and a density of 19.3 g/cm³. A. 18.5 cm³ B. 31.2 cm³ C. 42.4 cm³ D. 23.6 cm³ E. 87.9 cm³

Dany Maor asked Oct 2, 2024

by Dany Maor

8.5k points

1 answer

5 votes

204k views

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