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3 years ago

List 4 physical proper ty of the followingredients

1 answer:

6 0

Physical properties may include: color, hardness, weight, taste, odor, themal & electrical conductivity, boiling & melting point, solubility etc.

Some examples for the following objects

Copper wire: bendable, can conduct electricity, odorless, bronze color

500g of butter: 500g, soft, milky yellowish color, melting point (around 33°C)

Candle: slippery, hard, white (most), melting point (around 37°C)

Piece of aluminum foil: easy to fold, silver color, odorless, light in weight

Spoonful of sugar: sweet, white powder, odorless, dissolves in water

Toothpaste: soft, minty smell, white or green (most), taste bitter (bc it's alkali)

Hope it helps ;)

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a chemist dissolves 0.564 moles of manganese (IV) oxide (MnO2) in water, and adds enough water to make 0.510 L of solution. Calc

ladessa [460]

Answer:

The molarity of the solution is 1.1 $\frac{moles}{liter}$

Explanation:

Molarity is a measure of the concentration of that substance that is defined as the number of moles of solute divided by the volume of the solution.

The molarity of a solution is calculated by dividing the moles of the solute by the volume of the solution:

$molarity=\frac{number of moles of solute}{volume}$

Molarity is expressed in units $\frac{moles}{liter}$

In this case

number of moles of solute= 0.564 moles
volume= 0.510 L

Replacing:

$molarity=\frac{0.564 moles}{0.510 L}$

Solving:

molarity= 1.1 $\frac{moles}{liter}$

The molarity of the solution is 1.1 $\frac{moles}{liter}$

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3 years ago

What are the two models of arrangement for the first periodic table?

LUCKY_DIMON [66]

Answer:

the modals of arrangement for first periodic table was. increasing atomic mass and grouping together of elements having similar properties

7 0

3 years ago

Mass and volume can be used to describe what general property?

Wittaler [7]

3 dimensional figure

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3 years ago

HClO is a weak acid (Ka = 4.0 × 10–8) and so the salt NaClO acts as a weak base. What is the pH of a solution that is 0.028 M in

zloy xaker [14]

This photo should help

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3 years ago

For the chemical reaction HCN ( aq ) + KOH ( aq ) ⟶ H 2 O ( l ) + KCN ( aq ) HCN(aq)+KOH(aq)⟶H2O(l)+KCN(aq) write the net ionic

Anna11 [10]

Answer:

H+(aq) + OH-(aq) ⟶H2O(l)

Explanation:

Step 1: The balanced equation

HCN(aq) + KOH(aq) ⟶ H2O (l) + KCN (aq)

H+(aq) + CN-(aq) + K+(aq) + OH-(aq) ⟶H2O(l) + K+(aq) + CN-(aq)

Step 2: The net ionic equation

The net ionic equation, for which spectator ions are omitted - remember that spectator ions are those ions located on both sides of the equation - will , after canceling those spectator ions in both side, look like this:

H+(aq) + OH-(aq) ⟶H2O(l)

4 0

4 years ago