Part of the 14th Amendment deals with the rights of citizens. It states, "No State shall make or enforce any law which shall abridge the privileges or immunities of citizens of the United States; nor shall any State deprive any person of life, liberty, or
property, without due process of law; nor deny to any person within its jurisdiction the equal protection of the laws."
Which of the following grievances from the Declaration of Independence against the King best reflects the need for the
existence of such an amendment?
O A. He has affected to render the Military independent of and superior to the Civil Power.
OB. For quartering large bodies of armed troops among us
OC. For cutting off our Trade with all parts of the world
OD. He has plundered our seas, ravaged our Coasts, burnt our towns, and destroyed the lives of our people.

\boxed {\boxed {\sf molarity \approx 1.42 \ M \ KBr}}molarity≈1.42 M KBr

Explanation:

Molarity is a measure of concentration in moles per liter.

molarity= \frac{moles \ of \ solute}{ liters \ of \ solution}}

1. Find Formula for Compound

We have the compound potassium bromide. Potassium (K) has an oxidation state of +1 and bromine (Br) has -1. They bond in a 1:1 ratio, so the formula is KBr.

2. Convert Grams to Moles

We are given the amount of solute in grams, but we need moles. To convert, we use the molar mass. These values are found on the Periodic Table. They are the same as the atomic masses, but the units are grams per moles (g/mol) instead of atomic mass units (amu).

Look up the individual element's molar mass.

Potassium: 39.098 g/mol

Bromine: 79.90 g/mol

The formula of KBr contains no subscripts, so we can add the molar masses.

KBr: 39.098+ 79.90 =118.99 g/mol

Use the molar mass as a ratio.

\frac {118.998 \ g\ KBr}{ 1 \ mol \ KBr}1 mol KBr118.998 g KBr

We want to convert 25.3 grams, so we multiply by that value.

25.3 \ g\ KBr*\frac {118.998 \ g\ KBr}{ 1 \ mol \ KBr}25.3 g KBr∗1 mol KBr118.998 g KBr

Flip the ratio so the units of grams of KBr cancel.

25.3 \ g\ KBr*\frac{ 1 \ mol \ KBr}{118.998 \ g\ KBr}25.3 g KBr∗118.998 g KBr1 mol KBr

25.3*\frac{ 1 \ mol \ KBr}{118.998} = 0.2126086153\ mol \ KBr25.3∗118.9981 mol KBr=0.2126086153 mol KBr

3. Convert Milliliters to Liters

Molarity uses liters, so we must convert the 150 milliliters. 1 liter contains 1000 milliliters.

\frac{1 \ L }{1000 \ ml}1000 ml1 L

150 \ mL *\frac{1 \ L }{1000 \ ml}150 mL∗1000 ml1 L

150 *\frac{1 \ L }{1000}= 0.150 \ L150∗10001 L=0.150 L

4. Calculate Molarity

Now we have the moles of solute and liters of solution, so we can find molarity.

molarity= \frac{ moles \ of \ solute}{liters \ of \ solution}molarity=liters of solutionmoles of solute

molarity= \frac{0.2126086153 \ mol \ KBr}{ 0.150 \ L}molarity=0.150 L0.2126086153 mol KBr

molarity = 1.417390768\ mol KBr/Lmolarity=1.417390768 molKBr/L

The original measurements had 3 significant figures, so our answer must have the same. For the number we found, that is the hundredth place. The 7 in the thousandth place tells us to round the 1 to a 2.

molarity \approx 1.42 \ mol KBr/Lmolarity≈1.42 molKBr/L

1 mole per liter is equal to 1 Molar (M), so we must convert the units.

molarity \approx 1.42 \ M \ KBrmolarity≈1.42 M KBr

- tobacco.

- "rolfe reacted to consumer demand by importing seed from the west indies and cultivating the plant in the jamestown colony. those tobacco seeds became the seeds of a huge economic empire.the tobacco economy rapidly began to shape the society and development of the colony. growing tobacco takes its toil on the soil."

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