Quiz 1 (ch.1 and ch.2)

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perchloric acid

HClO4

hydrogen iodide

HI

nitrous acid

HNO2

water on bottom and hexane on top

Hexane is an organic solvent that is very sparingly soluble in water and has a density of 0.655 g/ml. A beaker containing hexane and water is sitting in a laboratory. In the beaker, where will the water be and where will the hexane be?

8.85 x 10^22

How many atoms of oxygen are present in 6.00 grams of KClO3?

naming ionic compounds

The name of the metal comes first, followed by the name of the nonmetal, changing the nonmetal's ending to "ide".

CaHPO4; calcium hydrogen phosphide (should be calcium hydrogen phosphate)

Which of the following is not named correctly? What is the correct name?

A (lead(I) sulfate), C (nitrogen oxide), and F (aluminum bromide) only

Which of the following name and formula pairs are not correct?

scientific notation form negative exponent

move decimal to left

scientific notation form positive exponent

move decimal to right

moles to atoms

multiply by Avogadro's number

moles to mass

multiply by molar mass

move decimal to right to convert to scientific notation

negative (subtract)

NO

nitrogen monoxide

density of water

1 g/cm3

deci (d)

10^-1

pico (p)

10^-12

femto (f)

10^-15

centi (c)

10^-2

milli (m)

10^-3

micro (µ)

10^-6

nano (n)

10^-9

deka (da)

10^1

tera (T)

10^12

hecto (h)

10^2

kilo (k)

10^3

mega (M)

10^6

giga (g)

10^9

9.83 x 10^-4

An unknown substance has a density of 0.983 g/cm^3. What is this density in ng/µm^3?

percent abundance equation

Average Mass (mass number) = (%)•(Mass of Isotope A) + (%)•(Mass of Isotope B) +...

11%

Elemental magnesium consists of three isotopes: 24Mg with an accurate mass of 23.99 amu, 25Mg with an accurate mass of 24.99 amu, and 26Mg with an accurate mass of 25.99 amu. If 24Mg is 79% of naturally occurring magnesium, what is the percent abundance of 26Mg?

Scientific Notation Rules

If the number is positive the decimal moves to the RIGHT. If the number is negative the decimal moves to the LEFT

PbSO4

Lead (II) Sulfate

2.09 x 10^1

What is the answer to the following calculation in scientific notation: 2.58 + 4.54 + 5.2 +8.267?

3.1

What is the answer to the following calculation? 71.262 + 4.5 - 6x10^1 / 5.24

number of neutrons in 56Cr

Which one of the following has the largest numerical value?

HC2H3O2

acetic acid

naming covalent compounds

add prefixes to elements and add -ide to the end of the anion

AlBr3

aluminum bromide

Al2(SO3)3

aluminum sulfite

NH4ClO4

ammonium perchlorate

higher density

bottom layer (sinks)

CaF2

calcium fluoride

CaHPO4

calcium hydrogen phosphate

CaSO3

calcium sulfite

H2CO3

carbonic acid

Cr2S3

chromium (III) sulfide

atoms to moles

divide by Avogadro's number

mass to moles

divide by molar mass

HCl

hydrochloric acid

HF

hydrofluoric acid

HClO

hypochlorous acid

Naming Acids

ide- hydro_______ ic ate - ate ite- ous

15.0 grams

if you wish to obtain 10.0 g of copper metal from copper (II) sulfide, what mass of copper(II) sulfide (in grams) must you use?

Fe(OH)3

iron (III) hydroxide

LiClO4

lithium perchlorate

Mg(OH)2

magnesium hydroxide

mass percent formula

mass of solute/mass of solution x 100

Hg2(HCO3)2

mercury (i) hydrogen carbonate

H3PO3

phosphorous acid

move decimal to the left to convert to scientific notation

positive (add)

NaCN

sodium cyanide

Na3PO4

sodium phosphate

SO2

sulfur dioxide

H2SO4

sulfuric acid

lower density

top layer (floats)

90Sr^2+

what is the symbol for a species composed of 38 protons, 52 neutrons, and 36 electrons?


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