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3 years ago

Why does sugar sink to the bottom of a tea cup?

Chemistry

2 answers:

Mandarinka [93]3 years ago

4 0

Because it is more dense than the water or tea.

miskamm [114]3 years ago

4 0

Answer:

The tea (solution) is hot, this means that the solution molecules are moving in a fast rate. This results in gaps being present between the solution molecules, when the sugar (solute) is added its molecules can fit in between the gaps making its way down the containers with ease.
Solubility is directly proportional to temperature, thus an increase in temperature (of the solution) will result in an increase in solubility (of the solute).

Explanation:

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In the reaction MgCl2 + 2KOH Mg(OH)2 + 2KCl, how many moles of Mg(OH)2 are produced for every mole of MgCl2?. A. 3. B. 1. C. 2.

aksik [14]

Mole ratio:

<span> MgCl</span>₂<span> + 2 KOH = Mg(OH)</span>₂<span> + 2 KCl
</span>
1 mole MgCl₂ -------------- 1 mole Mg(OH)₂

Answer B

hope this helps!

4 0

3 years ago

Read 2 more answers

Calculate the number of hydrogen atoms in 33.0 g CH4

Elena-2011 [213]

Answer:

The number of hydrogen atoms is 4.96x10²⁴.

Explanation:

The number of atoms can be found with the following equation:

$n = N*\eta_{H}$

Where:

N: is the Avogadro's number = 6.022x10²³ atoms/mol

η: is the number of moles of hydrogen

n: is the number of hydrogen atoms

First, we need to find the number of hydrogen moles. The number of moles of CH₄ is:

$\eta_{CH_{4}} = \frac{m}{M}$

Where:

m: is the mass of methane = 33 g

M: is the molar mass of methane = 16.04 g/mol

$\eta_{CH_{4}} = \frac{33 g}{16.04 g/mol} = 2.06 mol$

Now, since we have 4 hydrogen atoms in 1 mol of methane, the number of moles of hydrogen is:

$\eta_{H} = 2.06\: mol\: CH_{4}*4 \frac{mol\: H}{mol \: CH_{4}} = 8.24 mol$

Hence, the number of hydrogen atoms is:

$n = N*\eta_{H} = 6.022 \cdot 10^{23} \: atoms/mol*8.24 mol = 4.96 \cdot 10^{24} atoms$

Therefore, the number of hydrogen atoms is 4.96x10²⁴.

I hope it helps you!

3 0

3 years ago

Sort these six events from the earliest to the most recent. 1. Democritus proposes the existence of atoms 3rd 2. Dalton's atomic

Nitella [24]

Explanation:

1. Democritus proposes the existence of atoms

2. Dalton's atomic theory

3. J. J. Thomson discovers the electron

4. Rutherford's gold foil experiment

5. Bohr model

6. Schrödinger's Wave Mechanics model of the atom

The first idea about matter containing atoms dates back to Greek philosophers. One of them was Democritus .

In 1808 Dalton put forward his atomic theory

In 1897 J.J Thomson discovered cathode rays using his gas discharge tube experiment.

In 1911, Ernest Rutherford proposed the nuclear model of the atom using experiments on the gold foil.

Neils Bohr in 1913 suggested his own atomic model

Erwin Schrodinger formulated the wave equation of electrons

Learn more;

Dalton atomic theory brainly.com/question/1979129

Rutherford gold foil experiment brainly.com/question/1859083

#learnwithBrainly

4 0

3 years ago

Draw the reactants using the drawing tool. Keep in mind that one molecule of nitrogen has two bonded atoms, and one molecule of

ANTONII [103]

The formation of ammonia gas involves reacting hydrogen gas and nitrogen gas in a mole ratio of 3 to 1. as shown below:

$N_2 + 3H_2 \rightarrow 2NH_3$

<h3>What is the equation of the formation of ammonia?</h3>

Ammonia gas is formed from the reaction between nitrogen gas and hydrogen gas.

Three moles of hydrogen gas will react with 1 mole of nitrogen gas to form 2 moles of ammonia gas.

The equation of the reaction is given below as:

$N_2 + 3H_2 \rightarrow 2NH_3$

Therefore, the formation of ammonia gas involves reacting hydrogen gas and nitrogen gas in a mole ratio of 3 to 1.

Learn more about ammonia gas at: brainly.com/question/7982628

5 0

2 years ago

If the average salinity of seawater is 35ppt, how many grams of dissolved salts will 500g of seawater contain?

Mila [183]

<span>17.5 g 35 ppt stands for 35 parts per thousand. So let's convert that to a decimal number by taking 35 and dividing by 1000. 35/1000 = 0.035 Now multiply that number by the number of grams of seawater you have. So 0.035 * 500 g = 17.5 g So you have 17.5 grams of salt when you have 500 grams of seawater.</span>

4 0

3 years ago