When a sponge gets wet, does it become more massive

Answers

Answer 1

Answer: yes , it does become massive and it also becomes heavier.

Answer 2

Answer: Yes it does become more massive

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Whats the formula and molar mass of chromium (III) bicarbonate.

Answer fast plz

Answers

Answer:

Cr(HCO3)3

Explanation:

Molar mass: 235.0466

Which would most likely be joined by an ionic bond?

Answers

An ionic bond is composed of a cation and anion, which are charged ions. You cannot have atoms with ionic bonds, because there is no opposite attraction between charges due to atoms having a net nuclear charge of zero. Therefore, a cation and anion would most likely be joined by an ionic bond.

The density of gold is 19.3 g /cm cubed The density of iron pyrite is 5.0 g /cm cubed. Is a nugget of iron pyrite and a nugget of gold each have a mass of 50 g what can you conclude about the volume of each nugget

Answers

If you clear volume in the density equation:

$\rho = (m)/(V)\ \to\ V = (m)/(\rho)$

The greater the density the lower the volume. This means, the volume of gold nugget will be smaller than the volume of iron pyrite nugget.

$V_(gold) = (m)/(\rho) = (50\ g)/(19.3\ g/cm^3) = \bf 2.59\ cm^3$

$V_(iron) = (m)/(\rho) = (50\ g)/(5.0\ g/cm^3) = \bf 10\ cm^3$

A student rides his scooter . The student has a mass of 40.0 kg and travels with a constant acceleration of 1.5 m/s . What net force is the student experiencing ?

Answers

Answer:

60N

Explanation:

You use the equation F=AM where F=Force A=Acceleration and M=Mass

You multiply the Acceleration (1.5) and the Mass (40) together and that gives you 60N as the force

What is the net ionic equation of the reaction below?K2CO3(aq) +CaCl2 (aq) --> 2 KCl (29) + CaCO3(s)

Answers

Answer:

Net ionic equation:

Ca⁺²(aq) + CO²⁻₃(aq) → CaCO₃(s)

Explanation:

Chemical equation:

K₂CO₃ + CaCl₂ → KCl + CaCO₃

Balance chemical equation:

K₂CO₃(aq) + CaCl₂(aq) → 2KCl(aq) + CaCO₃(s)

Ionic equation:

2K⁺(aq) + CO²⁻₃(aq) + Ca⁺²(aq) + 2Cl⁻(aq) → 2K⁺(aq) + 2Cl⁻(aq) + CaCO₃(s)

Net ionic equation:

CO²⁻₃(aq) + Ca⁺²(aq) → CaCO₃(s)

The K⁺(aq) and Cl⁻ (aq) are spectator ions that's why these are not written in net ionic equation. The CaCO₃ can not be splitted into ions because it is present in solid form.

Spectator ions:

These ions are same in both side of chemical reaction. These ions are cancel out. Their presence can not effect the equilibrium of reaction that's why these ions are omitted in net ionic equation.

Final answer:

The net ionic equation for the reaction between K2CO3 and CaCl2 is Ca2+(aq) + CO3^2-(aq) --> CaCO3(s). This is obtained after removing the spectator ions (K+ and Cl-) from the full ionic equation.

Explanation:

The subject of discussion is the net ionic equation for the given chemical reaction between K2CO3(aq) and CaCl2(aq). An ionic equation represents the ions that are present in a chemical reaction, and a net ionic equation only shows the ions that actually participate in the reaction.

To form the net ionic equation, we first write the complete ionic equation. In this case, K2CO3(aq) breaks down into 2 K+(aq) + CO3^2-(aq), and CaCl2(aq) breaks down into Ca2+(aq) + 2 Cl-(aq). The products would be 2 K+(aq) + 2 Cl-(aq) + CaCO3(s).

The net ionic equation is then formed by canceling out the spectator ions (ions that do not participate in the reaction). Here, the spectator ions are K+ and Cl-. So, the net ionic equation is: Ca2+(aq) + CO3^2-(aq) --> CaCO3(s)

Learn more about Net Ionic Equation here:

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The mass of an object is described in what??

Answers

The mass of an object is measured in either grams or kilograms. Mass is best described as the amount of matter, or "stuff," in a solid, and is different from weight (which is the force of gravity on an object). Since mass is used with solids, it will be measured in grams or kilograms (rather than in something like liters, which would be used with the volume of a liquid). To measure mass, you can use a balance, for example a triple balance beam.

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