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valentina_108 [34]
3 years ago
5

. Which combination of the following items would most easily dissolve the sugar into the tea to make a pitcher of sweet tea in w

hich all of the sugar has been fully dissolved? I. sugar crystals II. sugar cubes III. cold water IV. hot water V. active stirring of the tea VI. leave the tea undisturbed
Chemistry
1 answer:
ICE Princess25 [194]3 years ago
4 0

sugar crystals, hot water, and active stirring

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Cân bằng phương trình Mg+HCl->MgCl2+H2 bằng phương pháp thăng bằng
nignag [31]

quá trình oxi hóa: Mg0 -> Mg2+ + 2e-

quá trình khử: 2H+ + 2e- -> H2 (cần 2 H+ để tạo 1 H2)

----> chỉ cần thêm 2 vào trước HCl (vì H+ là do HCl cung cấp)

----> Mg + 2HCl -> MgCl2 + H2

yay :)

8 0
3 years ago
In a neutral atom, the number of protons _______ the number of electrons.
sergejj [24]

Answer:

equal the number of electrons.

Explanation:

8 0
4 years ago
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Calculate the molar mass for oxygen gas
Sladkaya [172]

For example, the atomic mass of an oxygen atom is 16.00 amu; that means the molar mass of an oxygen atom is 16.00 g/mol. Further, if you have 16.00 grams of oxygen atoms, you know from the definition of a mole that your sample contains 6.022 x 10^23 oxygen atoms.

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3 years ago
(3.20x10^4)(0.2402) express your answer in appropriate significant figures.
yKpoI14uk [10]
7686.4 is the awnser
7 0
3 years ago
Please help me with this question!! read the photo
pishuonlain [190]

There are 1.92 × 10^23 atoms Mo in the cylinder.

<em>Step 1</em>. Calculate the <em>mass of the cylinder </em>

Mass = 22.0 mL × (8.20 g/1 mL) = 180.4 g

<em>Step 2</em>. Calculate the<em> mass of Mo </em>

Mass of Mo = 180.4 g alloy × (17.0 g Mo/100 g alloy) = 30.67 g Mo

<em>Step 3</em>. Convert <em>grams of Mo</em> to <em>moles of Mo </em>

Moles of Mo = 30.67 g Mo × (1 mol Mo/95.95 g Mo) = 0.3196 mol Mo

<em>Step 4</em>. Convert <em>moles of M</em>o to <em>atoms of Mo </em>

Atoms of Mo = 0.3196 mol Mo × (6.022 × 10^2<em>3</em> atoms Mo)/(1 mol Mo)

= 1.92 × 10^23 atoms Mo

7 0
3 years ago
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