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3 years ago

Is steel wool an element,compound,or mixture

Chemistry

2 answers:

Otrada [13]3 years ago

7 0

Is iron an element compound or mixture?

Of course Element. Iron = Fe It cannot be separated by physical or chemical means and hence is an element Mixtures can be separated by physical means and compound by chemical means

4vir4ik [10]3 years ago

5 0

Steel wool is neither, but it is mixture of iron with carbon.

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Which of the following causes a physical change in the shape of an object?

babunello [35]

Answer:

Explanation:

Heating a piece of iron until it glows.

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3 years ago

You are doing a peer review of a science experiment. The paper claims that an increase of pressure requires a greater addition o

Rus_ich [418]

This is true because as thermal energy increases, molecules move faster and liquids are turned into gas.

States of matter is determined by the amount of energy possessed by the particles. Particles of a solid has the least amount of energy, liquid particles have more energy than solid particles while gas particles possess the highest amount of energy.

To increase the pressure of a substance, greater thermal energy is added to the substance by heating it up. This heat causes the molecules of the liquid to become more energetic and move faster .

As this occurs, intermolecular forces between the substance is broken as the liquid is converted to gas. The pressure. The energetic gas particles collide faster with the walls of the container thereby increasing the pressure.

Learn more: brainly.com/question/18124975

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2 years ago

How many atoms of hydrogen are in ethanol (C2H5OH)?

EleoNora [17]

So we have: 1 C2H5OH + _ O2 -> 2 CO2 + _ H2O Step 3: The only molecule on the right that is left is H2O. We start with 6 hydrogen atoms<span> on the left.</span>

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3 years ago

Why is modern chemistry considered scientific??

svp [43]

I know I'm super late to answering this because it's a two week old question, but I'll just answer it any way lol.

The main reason why modern chemistry is considered scientific is because to confirm their results, scientists use the scientific method.

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3 years ago

Read 2 more answers

The Ksp of calcium sulfate, CaSO4, is 9.0 × 10-6. What is the concentration of CaSO4 in a saturated solution? A. 3.0 × 10-3 Mola

Svet_ta [14]

Answer: The concentration of $CaSO_4$ in a saturated solution is $3.0\times 10^{-3}M$

Explanation:

Solubility product is defined as the equilibrium constant in which a solid ionic compound is dissolved to produce its ions in solution. It is represented as $K_{sp}$

The equation for the ionization of $CaSO_4$ is given as:

$K_{sp}$ of $CaSO_4$ = $9.0\times 10^{-6}$

By stoichiometry of the reaction:

1 mole of $CaSO_4$ gives 1 mole of $Ca^{2+}$ and 1 mole of $SO_4^{2-}$

When the solubility of $CaSO_4$ is S moles/liter, then the solubility of $Ca^{2+}$ will be S moles\liter and solubility of $SO_4^{2-}$ will be S moles/liter.

$K_{sp}=[Ca^{2+}][SO_4^{2-}]$

$9.0\times 10^{-6}=[s][s]$

$9.0\times 10^{-6}=s^2$

$s=3.0\times 10^{-3}M$

Thus concentration of $CaSO_4$ in a saturated solution is $3.0\times 10^{-3}M$

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3 years ago