Please I need help with this homework

Chemistry

1 answer:

lesya [120]3 years ago

6 0

1. Sediment are like sand, pebbles, cobble, boulders, other type of vegetation like tree trunks. When sediment slides over the river bed of a solid rock it will erode some of the rock

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A solution contains 0.5 moles of MgSO4 dissolved in 0.6 liters of water. In water MgSO4 dissociates into one Mg2 particle and on

mr_godi [17]

Answer:

1.7 Osm/L

Explanation:

Osmotic concentration is the number of osmoles (Osm) of solute per litre of solution .

$\text{Osmotic concentration} = \dfrac{\text{No. of osmoles }}{\text{Litres of solution}}$

An osmole is the number of moles of solute that contribute to the osmotic pressure of a solution.

1 Osm = i × n, where

i = the van't Hoff i factor and

n = the number of moles

The van't Hoff i factor is the number of solute particles obtained from 1 mol of solute.

For example,

MgSO₄(aq) ⟶ Mg²⁺(aq) + SO₄²⁻(aq)

1 mol of MgSO₄ produces 2 mol of ions in solution, so i = 2.

$\text{Osmotic concentration} = \dfrac{\text{1.0 Osm}}{\text{0.6 L}} = \textbf{1.7 Osmol/L}$

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3 years ago

If you could help me that would be awesome

elixir [45]

There are 3 significant figures. Significant numbers are the numbers that build up your total number. 1-9 always count, 0 only counts if it’s after another number. For example: 0,901 has 3 significant numbers as does 0,910. 9,10 also has 3. 0,09 has just 1.

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3 years ago

Which of the following is a property of water a. polar molecule b. regulates temperature c.universal solvent d. all of the above

Vladimir [108]

The answer is the letter c

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3 years ago

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Please help will give points<br>Match the type of thermal energy with the letters on the drawing

Katen [24]

A: radiation

B: convection