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2 years ago

What are two ways to make a sugar cube dissolves faster in water

Chemistry

2 answers:

ruslelena [56]2 years ago

6 0

Answer:

c.warm water before adding the sugar cube

ipn [44]2 years ago

3 0

Answer:

C.Warm the warm the water before adding the sugar cube D. Break the sugar cube into smaller pieces

Explanation:

Heating. Speeds up particles causing them to bump and break, further exposing them to the solvent.

Increasing surface area. By crushing or breaking the solid, you are exposing it to more contact with the solute.

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Answer:

By using various chemical compounds to lift the stain while being gentle enough to keep fabric intact.

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3 years ago

How many moles are in 59.6 grams of BaSO4

AysviL [449]

Answer:

0.2553669915026199 BaSO4

Explanation:

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2 years ago

An unknown amount of mercury (II) oxide was decomposed in the lab. Mercury metal was formed and 5.20 L of oxygen was released at

Yakvenalex [24]

Answer:

68.3g

Explanation:

1. Word equation:

mercury(II) oxide → mercury + oxygen

2. Balanced molecular equation:

2HgO → 2Hg + O₂(g)

3. Mole ratio

Write the ratio of the coefficients of the substances that are object of the problem:

$2molHgO/1molO_2$

4. Calculate the number of moles of O₂(g)

Use the equation for ideal gases:

$pV=nRT\\\\\\n=\dfrac{pV}{RT}\\\\\\n=\dfrac{0.970atm\times5.20L}{0.08206atm.L/K.mol\times 390.0K}\\\\\\n=0.1576mol$

5. Calculate the number of moles of HgO

$\dfrac{2molHgO}{1molO_2}\times 0.1576molO_2=0.315molHgO$

6. Convert to mass

mass = # moles × molar mass

molar mass of HgO: 216.591g/mol

mass = 0.315mol × 216.591g/mol = 68.3g

7 0

3 years ago

This volcanic rock formed _____ from lava _____ in gas.

Evgen [1.6K]

C or a one of those hope it helps !!!!

7 0

3 years ago

Read 2 more answers

Hydrogen peroxide (h2o2) decomposes according to the equation:h2o2(l) ⇆ h2o(l) + ½ o2(g)calculate kp for t

goldenfox [79]

Hello! Let me try to answer this :)

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3 years ago