Question 1 To A Graduated Cylinder Containing 10 56 Ml Of Water Was Added An Obj

Question 1

To a graduated cylinder containing 10.56 mL of water was added an object with a mass of 1.4436 grams. The final volume reading on the graduated cylinder was 12.13 mL. What is the density of the object?

a) 0.92 g/mL

b) Not enough information

c) 0.79 g/mL

d) 1.08 g/mL

e) None of the above

Question 2

Seawater is an example of

a) a compound

b) a homogeneous mixture

c) an element

d) a heterogeneous mixture

Flag this Question

Question 31 pts

Of the following substances, only ______ has London dispersion forces as its only intermolecular force

a) NH3

b) CH4

c) CH3OH

d) Hal

e) H2S

Flag this Question

Question 41 pts

When the following equation is balanced using the smallest possible integers, what is the number in front of the underlined substance?

PCl5 + H2O → H3PO4 + HCl

a) 11

b) 5

c) 1

d) 2

e) 3

Flag this Question

Question 51 pts

How many grams of O2 are needed to produce 624.4 g of Fe2O3?

4Fe + 3O2  → 2Fe2O3

a) 250.2 g

b) 187.7 g

c) 125.1 g

d) 3.910 g

e) 375.4 g

Flag this Question

Question 61 pts

White phosphorous, P4, is prepared by fusing calcium phosphate, Ca3 (PO4)2, with carbon and sand, SiO2, in an electric furnace.

2Ca3(PO4)2 (s) + 6 SiO2 (s) + 10 C (s) → P4 + 6 CaSiO3 (s) + 10 CO

How many moles of CaSiO3 are produced if 4.4 moles of calcium phosphate react?

a) 8.80 mol

b) 22.0 mol

c) 2.2 mol

d) 13.2 mol

e) 26.4 mol

Flag this Question

Question 71 pts

Calculate the percent (by mass) of phosphorous in NaH2PO4.

a) 53.3%

b) 19.2%

c) 25.8%

d) 12.5%

Flag this Question

Question 81 pts

The reaction, Al2(SO4)3 (aq) + 6 NaOH (aq) → 2 Al (OH)3 (s) + 3 Na2SO4 (aq) is a(n) ______ reaction.

a) single replacement

b) acid-base

c) precipitation

d) oxidation-reduction

Flag this Question

Question 91 pts

The correct formula for magnesium nitrite is

a) Mg2NO2

b) Mg(NO3)2

c) MgNO3

d) Mg(NO2)2

e) Mg2NO3

Flag this Question

Question 101 pts

(Limiting reactant problem) Reacting 1.23 moles of NaOH and 1.47 mol of Cl2, how many moles of NaClO could be obtained according to the following balanced equation?

2NaOH + Cl2 → NaCl + NaClO + H2O

a) 1.47 mol

b) 1.23 mol

c) 0.615 mol

d) 0.735 mol

e) 2.46 mol

Flag this Question

Question 111 pts

How many neutrons are there in an atom of 48Ti?

a) 26

b) 47

c) 69

d) 22

Flag this Question

Question 121 pts

How many total electrons are present in a bromine, Br, atom?

a) 35

b) 40

c) 34

d) 37

e) 36

Flag this Question

Question 131 pts

What is the electron configuration for the phosphorus atom?

a) 1s22s22p63s5

b) 1s22s22p63s23p5

c) 1s22s22p63s23p3

d) 1s22s22p63s23p2

Flag this Question

Question 141 pts

Which of the following does not have 8 valence electrons?

a) Ar

b) Kr

c) Cl

d) Ne

Flag this Question

Question 151 pts

Which of the following atoms has the smallest atomic radius?

a) Br

b) Cl

c) F

d) Ge

e) Ne

Flag this Question

Question 161 pts

Metal atoms tend to ______________ electrons and form ______________ ions.

a) gain; negative

b) share; neutral

c) lose; positive

d) gain; positive

e) lose; negative

Flag this Question

Question 171 pts

Chemical bonds formed by the sharing of electrons are called

a) magnetic bonds

b) covalent bonds

c) coordinate bonds

d) ionic bonds

Flag this Question

Question 181 pts

What is the correct formula for the product of the reaction Al + O2?

a) AlO3

b) Al3O2

c) AlO2

d) Al2O3

e) AlO

Flag this Question

Question 191 pts

Which element or ion has the electronic configuration, 1s22s22p63s23p63d104s24p5?

a) Br –

b) Br

c) None of these

d) Rb+

e) Kr

Flag this Question

Question 201 pts

Equal masses of hydrogen gas and oxygen gas are reacted to form water. Which substance is in excess?

a) Oxygen gas (O2) is in excess.

b) Neither gas is in excess.

c) Hydrogen gas (H2) is in excess.

Flag this Question

Question 211 pts

Which of the following compounds contains one or more covalent bonds?

a) SrF2

b) K2S

c) RaCl2

d) NH3

e) CsBr

Flag this Question

Question 221 pts

When the equation Al4C3(s) + H2O(l) → CH4(g) + Al(OH)3 (s) is balanced, what is the coefficient for Al(OH)3?

a) 1

b) 5

c) 3

d) 2

e) 4

Flag this Question

Question 231 pts

The correct name for an aqueous solution of H2SO3

a) dihydrogen sulfurous acid

b) sulfuric acid

c) sulfurous acid

d) sulfite acid

e) sulfate acid

Flag this Question

Question 241 pts

An aqueous solution of potassium sulfate is allowed to react with an aqueous solution of lead(II) nitrate. The net ionic equation would contain which of the following species?

a) 2K+(aq)

b) Pb2+(aq)

c) 2NO3-(aq)

d) NO3-(aq)

e) 2SO42-(aq)

Flag this Question

Question 251 pts

What is the molecular formula for C2H4 molar mass = 88 g/mol?

a) C4H8O4

b) C4H8O2

c) C2H4O

d) C2H4O2

Flag this Question

Question 261 pts

How many moles of sodium hydroxide are in 0.75 L of a 2.5 M solution of NaOH? (A 2.5 M solution contains 2.5 moles of solute in each liter of solution).

a) 1.9 mol

b) 3.3 mol

c) 0.75 mol

d) 2.5 mol

Flag this Question

Question 271 pts

The amount of a substance that dissolved in a given quantity of water at a given temperature to give a saturated solution is its

a) solubility

b) supersaturated solution

c) saturated solution

d) unsaturated solution

Flag this Question

Question 281 pts

An aqueous solution is made from 0.798 g of potassium permanganate, KMnO4. If the volume of a solution is 50.0 mL, what is the molarity of KMnO4 in the solution? (Remember: M stands for molar.)

a) 9.90 M

b) 0.05 M

c) 16.0 M

d) 0.101 M

e) 5.05 x 10-3 M

Flag this Question

Question 291 pts

How many protons are in the nucleus of a Ca atom?

a) 20

b) 39

c) 40

d) Variable

e) 41

Flag this Question

Question 301 pts

Classify the following reaction:

BaCl2 (aq) + CuSO4 (aq) → BaSO4 (s) +CuCl2 (aq)

a) Acid-base

b) Single displacement

c) Double replacement

d) Combination or synthesis

e) Precipitation

Flag this Question

Question 311 pts

How many atoms of magnesium are present in 28.5 g of magnesium?

a) 7.061 x 1023

b) 6.022 x 1023

c) 2.050 x 10-24

d) 1.720 x 1025

Flag this Question

Question 321 pts

When an electron in the excited state emits energy in the form of light it is said to go to the ____ state.

a) Ground

b) Ionic

c) Stable

d) Excited

e) Acidic

Flag this Question

Question 331 pts

The compound CrSO4 is named

a) Chromium sulfite

b) Chromium sulfate

c) Chromium (II) sulfite

d) Chromium (II) sulfate

Duepapers
Calculate your paper price
Pages (550 words)
Approximate price: -

Why Work with Us

Top Quality and Well-Researched Papers

We always make sure that writers follow all your instructions precisely. You can choose your academic level: high school, college/university or professional, and we will assign a writer who has a respective degree.

Professional and Experienced Academic Writers

We have a team of professional writers with experience in academic and business writing. Many are native speakers and able to perform any task for which you need help.

Free Unlimited Revisions

If you think we missed something, send your order for a free revision. You have 10 days to submit the order for review after you have received the final document. You can do this yourself after logging into your personal account or by contacting our support.

Prompt Delivery and 100% Money-Back-Guarantee

All papers are always delivered on time. In case we need more time to master your paper, we may contact you regarding the deadline extension. In case you cannot provide us with more time, a 100% refund is guaranteed.

Original & Confidential

We use several writing tools checks to ensure that all documents you receive are free from plagiarism. Our editors carefully review all quotations in the text. We also promise maximum confidentiality in all of our services.

24/7 Customer Support

Our support agents are available 24 hours a day 7 days a week and committed to providing you with the best customer experience. Get in touch whenever you need any assistance.

Try it now!

Calculate the price of your order

Total price:
$0.00

How it works?

Follow these simple steps to get your paper done

Place your order

Fill in the order form and provide all details of your assignment.

Proceed with the payment

Choose the payment system that suits you most.

Receive the final file

Once your paper is ready, we will email it to you.

Our Services

No need to work on your paper at night. Sleep tight, we will cover your back. We offer all kinds of writing services.

Essays

Essay Writing Service

No matter what kind of academic paper you need and how urgent you need it, you are welcome to choose your academic level and the type of your paper at an affordable price. We take care of all your paper needs and give a 24/7 customer care support system.

Admissions

Admission Essays & Business Writing Help

An admission essay is an essay or other written statement by a candidate, often a potential student enrolling in a college, university, or graduate school. You can be rest assurred that through our service we will write the best admission essay for you.

Reviews

Editing Support

Our academic writers and editors make the necessary changes to your paper so that it is polished. We also format your document by correctly quoting the sources and creating reference lists in the formats APA, Harvard, MLA, Chicago / Turabian.

Reviews

Revision Support

If you think your paper could be improved, you can request a review. In this case, your paper will be checked by the writer or assigned to an editor. You can use this option as many times as you see fit. This is free because we want you to be completely satisfied with the service offered.

See all services