Mastering Chemistry- Chapter 2 Assignment

What is the ratio of hydrogen atoms (H) to oxygen atoms (O) in 2 L of water? Enter the simplest whole number ratio in order of hydrogen to oxygen, respectively.
Express your answer as two integers, separated by a comma (e.g., 3,4).

2, 1

How many atoms of hydrogen (H) are present in 200 molecules of ammonia (NH3)?
Express your answer numerically.

600 H atoms

A solution of ammonia and water contains 2.50×1025 water molecules and 5.50×1024 ammonia molecules. How many total hydrogen atoms are in this solution?
Enter your answer numerically.

6.65 x 10^25 H atoms

Specify the number of protons, neutrons, and electrons in the neutral atom iron-56.
Enter your answers as integers separated by commas.

26, 30, 26 protons, neutrons, electrons

The ion S^2− has _____ protons and _____ electrons.
Enter your answers as integers separated by a comma.

16, 18

What isotope has 13 protons and 14 neutrons?
Enter the name of the element followed by a hyphen and the mass number (e.g., uranium-234).

Aluminum-27

Which element does X represent in the following expression: 41 (superscript) 20 (subscript)X?
Enter the chemical symbol of the element.

Ca

What is the atomic mass of a hypothetical element that consists of the following isotopes in the indicated natural abundances? Express your answer to three significant figures and include the appropriate units.

90.7 amu

What is the atomic mass of the element that consists of the following isotopes in the indicated natural abundances? Express your answer to three significant figures and include the appropriate units.

58.7 amu

Classify the following elements as main group elements, transition metals, or inner transition metals.
Drag the appropriate elements to their respective bins.

Main group elements: -Mg -Bi -S Transition Metals: -Pd -Fe Inner transition metals: -Fm

Classify the following elements as halogens, alkali metals, alkaline earth metals, or noble gases.
Drag the appropriate elements to their respective bins.

Halogens: -Br -F Alkali metals: -Fr -Li Alkaline earth metals: -Ca Noble gases: -Kr

Match each element to its period.
Drag the appropriate elements to their respective bins.

Period 1: H Period 2: Be Period 3: Al Period 4: Ni Period 5: In Period 6: W Period 7: Rf

Classify the following elements as metal, nonmetal, or metalloid (semimetal).
Drag the appropriate elements to their respective bins.

Metal: -K -Mn Nonmetal: -P -Ne Metalloid -Ge -As

Which of the following could be the structure of C3H6O3?

B

Tyrosine contains 11 hydrogen atoms, 9 carbon atoms, 3 oxygen atoms, and 1 nitrogen atom. What is the chemical formula for tyrosine?
Express your answer as a chemical formula.

C9H11NO3

A certain compound is made up of two bromine atoms, one nitrogen atom, and one chlorine atom. What is the chemical formula of this compound?
Express your answer as a chemical formula.

NBr2Cl

Strontium bromide contains only strontium and bromine. What is the formula for this compound?
Express your answer as a chemical formula.

SrBr2

Which of the following would you expect to be a molecule and which would you expect to be part of an ionic solid?
Drag the appropriate compounds to their respective bins.

Molecular: -HCl -SO -CO Ionic: -NaI -KCl -MgO -CaS -KF

Classify the following compounds as having covalent or ionic bonds.
Drag the appropriate compounds to their respective bins.

Covalent Bond: -dinitrogen trioxide -carbon dioxide Ionic Bond: -sodium bromide -magnesium nitride -aluminum oxide -calcium chloride

Match each diagram to the atom or ion it represents.
Drag each item to the appropriate bin.

P: 15+ 15- P^3+: 15+ 12- P^3-: 15+ 18- Mg: 12+ 12- Mg^2+: 12+ 10- Mg^2-: 12+ 14-

What is the charge on the most stable ion of each of the following elements?
Drag each item to the appropriate bin.

1+: K 2+: Ba, Mg 3+: Al 3-: N 2-: O, S 1-: I

Give the systematic name for the compound Mg(NO3)2.
Spell out the full name of the compound.

magnesium nitrate

Give the systematic name for the compound Mn2(SO4)3.
Spell out the full name of the compound.

manganese(III) sulfate

Enter the formula for the compound beryllium oxide.
Express your answer as a chemical formula.

BeO

Enter the formula for the compound lead(II) phosphate.
Express your answer as a chemical formula.

Pb3(PO4)2

What is the name for the compound NO2?
Spell out the full name of the compound.

nitrogen dioxide

What is the name for the compound N2H4?
Spell out the full name of the compound.

dinitrogen tetrahydride

Based on the data Thomson collected in his experiments using cathode rays, the concept of atomic structure was modified. Which of the following statements about the atomic structure were validated by his cathode ray experiments?
Check all that apply.

-Matter contains negative charge and by inference positive charge. -Cathode rays have mass. -There are subatomic size particles in an atom. -Particles of the cathode rays are fundamental to all matter.

Based on the data gathered in Millikan's oil-drop experiments, the concept of atomic structure was modified. Which of the following aspects of the structure of the atom was validated by these experiments?
Check all that apply.

-charge on an electron -mass of an electron

Based on the data gathered in the Rutherford's scattering experiments, the concept of atomic structure was modified. Which of the following aspects of the structure of the atom were validated by these experiments?
Check all that apply.

-the nuclear density being large -the charge on the nucleus being positive -the existence of the atomic nucleus -most of the atomic volume being empty space

Mastering Chemistry- Chapter 2 Assignment - Subjecto.com

Mastering Chemistry- Chapter 2 Assignment

Your page rank:

Total word count: 887
Pages: 3

Calculate the Price

- -
275 words
Looking for Expert Opinion?
Let us have a look at your work and suggest how to improve it!
Get a Consultant

What is the ratio of hydrogen atoms (H) to oxygen atoms (O) in 2 L of water? Enter the simplest whole number ratio in order of hydrogen to oxygen, respectively.
Express your answer as two integers, separated by a comma (e.g., 3,4).

2, 1

How many atoms of hydrogen (H) are present in 200 molecules of ammonia (NH3)?
Express your answer numerically.

600 H atoms

A solution of ammonia and water contains 2.50×1025 water molecules and 5.50×1024 ammonia molecules. How many total hydrogen atoms are in this solution?
Enter your answer numerically.

6.65 x 10^25 H atoms

Specify the number of protons, neutrons, and electrons in the neutral atom iron-56.
Enter your answers as integers separated by commas.

26, 30, 26 protons, neutrons, electrons

The ion S^2− has _____ protons and _____ electrons.
Enter your answers as integers separated by a comma.

16, 18

What isotope has 13 protons and 14 neutrons?
Enter the name of the element followed by a hyphen and the mass number (e.g., uranium-234).

Aluminum-27

Which element does X represent in the following expression: 41 (superscript) 20 (subscript)X?
Enter the chemical symbol of the element.

Ca

What is the atomic mass of a hypothetical element that consists of the following isotopes in the indicated natural abundances? Express your answer to three significant figures and include the appropriate units.

90.7 amu

What is the atomic mass of the element that consists of the following isotopes in the indicated natural abundances? Express your answer to three significant figures and include the appropriate units.

58.7 amu

Classify the following elements as main group elements, transition metals, or inner transition metals.
Drag the appropriate elements to their respective bins.

Main group elements: -Mg -Bi -S Transition Metals: -Pd -Fe Inner transition metals: -Fm

Classify the following elements as halogens, alkali metals, alkaline earth metals, or noble gases.
Drag the appropriate elements to their respective bins.

Halogens: -Br -F Alkali metals: -Fr -Li Alkaline earth metals: -Ca Noble gases: -Kr

Match each element to its period.
Drag the appropriate elements to their respective bins.

Period 1: H Period 2: Be Period 3: Al Period 4: Ni Period 5: In Period 6: W Period 7: Rf

Classify the following elements as metal, nonmetal, or metalloid (semimetal).
Drag the appropriate elements to their respective bins.

Metal: -K -Mn Nonmetal: -P -Ne Metalloid -Ge -As

Which of the following could be the structure of C3H6O3?

B

Tyrosine contains 11 hydrogen atoms, 9 carbon atoms, 3 oxygen atoms, and 1 nitrogen atom. What is the chemical formula for tyrosine?
Express your answer as a chemical formula.

C9H11NO3

A certain compound is made up of two bromine atoms, one nitrogen atom, and one chlorine atom. What is the chemical formula of this compound?
Express your answer as a chemical formula.

NBr2Cl

Strontium bromide contains only strontium and bromine. What is the formula for this compound?
Express your answer as a chemical formula.

SrBr2

Which of the following would you expect to be a molecule and which would you expect to be part of an ionic solid?
Drag the appropriate compounds to their respective bins.

Molecular: -HCl -SO -CO Ionic: -NaI -KCl -MgO -CaS -KF

Classify the following compounds as having covalent or ionic bonds.
Drag the appropriate compounds to their respective bins.

Covalent Bond: -dinitrogen trioxide -carbon dioxide Ionic Bond: -sodium bromide -magnesium nitride -aluminum oxide -calcium chloride

Match each diagram to the atom or ion it represents.
Drag each item to the appropriate bin.

P: 15+ 15- P^3+: 15+ 12- P^3-: 15+ 18- Mg: 12+ 12- Mg^2+: 12+ 10- Mg^2-: 12+ 14-

What is the charge on the most stable ion of each of the following elements?
Drag each item to the appropriate bin.

1+: K 2+: Ba, Mg 3+: Al 3-: N 2-: O, S 1-: I

Give the systematic name for the compound Mg(NO3)2.
Spell out the full name of the compound.

magnesium nitrate

Give the systematic name for the compound Mn2(SO4)3.
Spell out the full name of the compound.

manganese(III) sulfate

Enter the formula for the compound beryllium oxide.
Express your answer as a chemical formula.

BeO

Enter the formula for the compound lead(II) phosphate.
Express your answer as a chemical formula.

Pb3(PO4)2

What is the name for the compound NO2?
Spell out the full name of the compound.

nitrogen dioxide

What is the name for the compound N2H4?
Spell out the full name of the compound.

dinitrogen tetrahydride

Based on the data Thomson collected in his experiments using cathode rays, the concept of atomic structure was modified. Which of the following statements about the atomic structure were validated by his cathode ray experiments?
Check all that apply.

-Matter contains negative charge and by inference positive charge. -Cathode rays have mass. -There are subatomic size particles in an atom. -Particles of the cathode rays are fundamental to all matter.

Based on the data gathered in Millikan’s oil-drop experiments, the concept of atomic structure was modified. Which of the following aspects of the structure of the atom was validated by these experiments?
Check all that apply.

-charge on an electron -mass of an electron

Based on the data gathered in the Rutherford’s scattering experiments, the concept of atomic structure was modified. Which of the following aspects of the structure of the atom were validated by these experiments?
Check all that apply.

-the nuclear density being large -the charge on the nucleus being positive -the existence of the atomic nucleus -most of the atomic volume being empty space

Share This
Flashcard

More flashcards like this

NCLEX 10000 Integumentary Disorders

When assessing a client with partial-thickness burns over 60% of the body, which finding should the nurse report immediately? a) ...

Read more

NCLEX 300-NEURO

A client with amyotrophic lateral sclerosis (ALS) tells the nurse, "Sometimes I feel so frustrated. I can’t do anything without ...

Read more

NASM Flashcards

Which of the following is the process of getting oxygen from the environment to the tissues of the body? Diffusion ...

Read more

Unfinished tasks keep piling up?

Let us complete them for you. Quickly and professionally.

Check Price

Successful message
sending