How is relative age different from absolute age

Chemistry

2 answers:

snow_lady [41]3 years ago

8 0

Answer:

Relative age is the age of a rock layer.

Absolute age is the numeric age of a layer of rocks or fossils.

Explanation:

Llana [10]3 years ago

3 0

Relative age is the age of a rock layer compared to other layers and absolute age is the numeric age of a layer of rocks or fossils

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A sample of tap water contains 75 ppm aqueous FeCl3. How many particles of tap water would there be for every 75 particles of Fe

Marysya12 [62]

Answer:

1,000,000 particles of tap water would be for every 75 particles of FeCl3

Explanation:

sample of tap water contains 75 ppm aqueous FeCl3.

i.e sample of water is 75 particular per million aqueous FeCl3

Sample of water = 75/1000000 particular of FeCl3

x particular of water = 75 particular of FeCl3

To find the value of x, we cross multiply

Therefore we have:

75 = 75/1,000,000X

X = 75 / (75/1000000)

X = 75 x 1000000/75

X = 1,000,000.

1,000,000 particles of tap water would be for every 75 particles of FeCl3

6 0

4 years ago

How would you prepare 500 mL of 0.360 M solution of CaCl2 from<br> solid CaCl2?

LenKa [72]

We need to measure 20.0 grams of CaCl₂ to prepare 500 mL of 0.360 M solution.

First, we need to determine the required moles of CaCl₂. We have 500 mL (0.500 L) of a 0.360 M solution (0.360 moles of CaCl₂ per liter of solution).

$0.500 L \times \frac{0.360mol}{L} = 0.180 mol$

Then, we will convert 0.180 moles to grams using the molar mass of CaCl₂ (110.98 g/mol).

$0.180 mol \times \frac{110.98g}{mol} = 20.0 g$

To prepare the solution, we weigh 20.0 g of CaCl₂ and add it to a beaker with enough distilled water to dissolve it. We stir it, heat it if necessary, and when we have a solution, we transfer it to a 500 mL flask and complete it to the mark with distilled water.