Chemistry College

2 2 6 2 6 2 10 3
1s 2s 2p 3s 3p 4s 3d 4p
=

2 2 6 2 6 2 10 3 1s 2s 2p 3s 3p 4s 3d 4p=

Answers

Answer 1

Answer:

ARSENIC

Explanation:

It has an atomic number of 33

Related Questions

In the laboratory you dissolve 18.7 g of copper(II) bromide in a volumetric flask and add water to a total volume of 375mL.

Required:
a. What is the molarity of the solution?
b. What is the concentration of the copper(II) cation?
c. What is the concentration of the acetate anion?

Answers

Answer:

a) - 0.2 M

b) - 0.2 M

c)- 0

Explanation:

The chemical formula of copper (II) bromide is CuBr₂. Its molar mass (MM) is calculated as follows:

MM(CuBr₂)= MM(Cu) + (2 x MM(Br) = 63.5 g/mol + (2 x 80 g/mol)= 223.5 g/mol

a). Molarity = moles CuBr₂/1 L solution

moles CuBr₂ = mass/MM = 18.7 g x 1 mol/223.5 g = 0.084 mol

Volume in L = 375 mL x 1 L/1000 mL = 0.375 L

M = 0.084 mol/(0.375 L) = 0.223 M ≅ 0.2 M

b). When is added to water, CuBr₂ dissociates into ions as follows:

CuBr₂ ⇒ Cu²⁺ + 2 Br⁻

We have 1 mol Cu²⁺ (copper (II) cation) per mol of CuBr₂. Thus, the concentration of copper (II) cation is:

0.2 mol CuBr₂ x 1 mol Cu²⁺/mol CuBr₂ = 0.2 M

c). The concentration of acetate anion is 0. There is no acetate anion in the solution (the anion from CuBr₂ is bromide Br⁻).


1. What 2 subatomic particles have charges? List the particle name and its charge.

Answers

Answer: Proton - positive charge (+)

Neutron - neutral charge (0)

Electron - negative charge (-)

Explanation:

Solid diarsenic trioxide reacts with fluorine gas (F2) to produce liquid arsenic pentafluoride and oxygen gas (O2). Write the Qc for this reaction.

Answers

Answer:

QC= [O2]^3/[F2]^10

Explanation:

Other Questions
It was 7 degrees below zero in the morning. By afternoon the temperature rose 15 degrees. How warm was it? tHow do you think people in our society would respond if they had enforced handicaps? 18) Which is the concluding sentence of paragraph 2?A) Every day, the children play and swim in the lake.B)In fact, it seems that nighttime never comes, and thesun always shinesC)The film's story centers on a group of a dozenchildren from the town.D)This close-knit group, which becomes known as theLakeside Twelve, gathers daily by the lake, How does this quote reflect the influence of Enlightenment ideas on the Founding Fathers? AThey had reservations about self-government. BThey were concerned with property rights.CThey supported individual liberties. DThey created a limited monarchy.BenchmarkSS.7.C.1.1 A chant melody with elongated rhythms sung beneath one or more fastermelodies is called:A. polyphonyB. Gregorian Chant.C. cantus firmus.D. Anglican chant. A runner is jogging in a straight line at a steady vr= 7.3 km/hr. When the runner is L= 2.1 km from the finish line, a bird begins flying straight from the runner to the finish line at vb= 29.2 km/hr (4 times as fast as the runner). When the bird reaches the finish line, it turns around and flies directly back to the runner After this first encounter, the bird then turns around and flies from the runner back to the finish line, turns around again and flies back to the runner. The bird repeats the back and forth trips until the runner reaches the finish line. How far does the bird travel from the beginning (including the distance traveled to the first encounter Read and choose the option with the correct affirmative command for t to complete the sentence.________ de la casa a las ocho de la maana para hacer diligencias. Almorzamos a la una de la tarde; no llegues tarde. How many missionaries lived on a mission? 1. 4 2 7 Which one should I choose What does the verb SER mean in English? what kind of barrier is information overload? Can someone help me with these questions. (Answer 1 or answer them all I don't care.) (NEED HELP URGENTLY WILL MARK BRAINLIEST) LutherA. translated the Bible into GermanB. remained celibate until he diedC. believed communion of wine and wafer literally transformed into the bloody andbody of ChristD. became more timid as the Protestant Reformation continuedExplain your answer The level of toluene (a flammable hydrocarbon) in a storage tank may fluctuate between 10 and 400 cm from the top of the tank. since it is impossible to see inside the tank, an open-end manometer with water or mercury as the manometer fluid is to be used to determine the toluene level. one leg of the manometer is attached to the tank 500 cm from the top. a nitrogen blanket at atmospheric pressure is maintained over the tank contents. felder, richard m.; rousseau, ronald w.; bullard, lisa g.. elementary principles of chemical processes, 4th edition (page 81). wiley. kindle edition. $50 an hour is aA salaryB commissionC wageD pension According to the guidelines of good journalism, which of the following is correct: A. Fort Lauderdale, FloridaB. Fort Lauderdale, Fla.C. Fort Lauderdale, FLD. Ft. Lauderdale, Fla. 1)What number is 4 times as many as 25? Which two of the following sentences from thearticle include central ideas of the article?1. The most famous printedversion of the Declaration ofIndependence is emblazonedwith the words "In Congress,July 4, 1776" at the top.2. Interestingly, this documentwas not officially signed onthat celebrated date.3. The document, central tofounding the United States ofAmerica, was created througha process that took timecooperation and revision,4. It is believed that about 200copies were published on July5 and only about 25 still existtoday. The diameters of trees at a nursery are Normallydistributed with a mean of 2.5 inches and a standarddeviation of 0.5 inches.X-Calculate the Z-score for a tree that has a diameter of1.83 inches. Round the Z-score to the nearesthundredth, if necessary.The Z-score for a tree that has a diameter of 1.83 inchesis about...? Johnny scored a 75% on his math test. He got 18 questionscorrect. How many questions were on the test? *