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4 years ago

7

A soild reactant is placed in to a beaker of warm water. The liquid vigorously bubbles as the solid dissolves into the solution.

What will most likely happen if the temperature of the liquid is slighty reduce?

1 answer:

Karo-lina-s [1.5K]4 years ago

3 0

It will bubble less and probably stop boiling for a couple seconds

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Aluminum has density of 2.7g/cm3.<br><br> What is the mass of 35 cm3 aluminum in g?

Sveta_85 [38]

Answer:

density= 2.7 g/cm3

volume= 25 cm3

mass = density× volume

= 35×2.7

= 94.5 g

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3 years ago

An element which forms an oxide that dissolves in water to form an acidic solution.

zzz [600]

Answer:

An Alkaline solution should be the answer to that.

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3 years ago

Acidity is a measure of the amount of dissolved hydroxide ions in a solution.

Gekata [30.6K]

The concentration of hydrogen ions in a solution is a measure of its acidity. So the correct option is (b) false.

When an Arrhenius acid is dissolved in water, hydrogen ions are produced:

H+(aq) + A- = HA + H2O (aq)

Here, H+ is the hydrogen cation, A- is the solvated anion, also known as the conjugate base, and HA is the non-dissociated acid. When an Arrhenius base is dissolved in water, hydroxide ions are produced:

BOH + H2O → B+(aq) + OH-(aq)

Is a material with at least one hydrogen atom that has the ability to split apart in an aqueous solution to produce an anion and an H + ion (a proton), creating an acidic solution. Bases are substances that, when dissolved in water, create hydroxide ions (OH) and a cation, resulting in a basic solution.

Learn more about hydrogen here:

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2 years ago

What is an alloy? A. A substitution of one metal for another metal B. A metal with a changed oxidation state C. A combination of

raketka [301]

The correct answer is the combination of a metal with another element.

An alloy is a combination of two or more metallic elements to make a stronger material. For instance, there are bronze alloys, brass alloys, and coin alloys.

We can confirm that an alloy is a combination of one metal with another metal because stainless steel is made of an iron and chromium alloy (iron is a metal; chromium is also a metal). Therefore, we can confirm that option C is the best choice.

8 0

3 years ago

a spherical sample has a mass of 2.813g. it has a diameter of 8.0mm. what is the sphere made of (determined by its density as g/

blondinia [14]

To determine the density, we use the following formula:

$density= \frac{mass}{volume}$

mass= 2.813 grams
volume= ?

we need to first calculate the volume before we can solve for the density. since the question states that the sample has a spherical shape, we can use the volume formula of spheres to find it.

$Sphere_{volume}= \frac{4}{3} \pi r^{3}$

radius (r)= $\frac{diameter}{2}$ = $\frac{8.0 mm}{2} = 4.0 mm$

let's plug in the values

V= $\frac{4}{3} \pi 4^{3} = 268 mm^3$

we need to change the $mm^3$ to $cm^3$ using the following conversion

1 cm= 10 mm
$268 mm^3 (\frac{1 cm}{10 mm} )^3 = 0.268 cm^3$

now we can find the density.

density= 2.813 grams/ 0.268 cm= 10.5 g/cm3

5 0

3 years ago