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GalinKa [24]
3 years ago
14

2)

Chemistry
1 answer:
mafiozo [28]3 years ago
7 0

Answer:

c 520kj mol

Explanation:

times all the electrons

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1. The picture above shows salt (NaCl).
Gwar [14]

Answer: A Chloride is attracted to the hydrogen atoms in a water molecule.

Explanation: Salt dissociates in water because Chlorine which is an anion gets attracted to the positively charged atoms of Hydrogen in water. This attraction causes Cl to bind with Hydrogen allowing Na to be left behind.

7 0
4 years ago
Upon balancing the equation below, how many moles of sulfuric acid are needed to react completely with 6.4 moles of lithium hydr
elena-14-01-66 [18.8K]

Moles of Sulfuric acid needed to react completely : 3.2

<h3>Further explanation</h3>

A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reagents and products.

Reaction (balanced)

<em>H₂SO₄ (aq) + 2 LiOH (aq) ⇒ Li₂SO₄ (aq) + 2 H₂O (l)</em>

moles of LiOH = 6.4

From equation, mol ratio of H₂SO₄ : LiOH = 1 : 2, so mol H₂SO₄ :

\tt mol=\dfrac{1}{2}\times 6.4=3.2

5 0
3 years ago
8. A student found the mass of an object to be 26.5 g. To find the volume, the student submerged the object in a graduated cylin
LenKa [72]

Answer: The density of the object is 1.10 g/ml

Explanation:

To calculate the mass of water, we use the equation:

\text{Density of substance}=\frac{\text{Mass of substance}}{\text{Volume of substance}}

Density of object = ?

Mass of object = 26.5 g

Volume of object = volume of water displaced = 24.1 ml

Putting values in above equation, we get:

Density=\frac{26.5g}{24.1ml}=1.10g/ml

Thus density of the object is 1.10 g/ml

3 0
3 years ago
An organic synthesis to make the pain reliever acetaminophen is supposed to produce 280 kg of product but instead produces 70 kg
Irina-Kira [14]

Answer: 75%

Explanation:

The following information can be gotten from the question:

Waste = 70kg

Theoretical yield = 280kg

Therefore, the actual yield will be the difference between the theoretical yield and the waste which will be:

= 280kg - 70kg = 210kg

The percent yield will now be:

= Actual yield / Theoretical yield × 100

= 210/280 × 100

= 3/4 × 100

= 75%

4 0
3 years ago
What is the symbol for molarity?
Lubov Fominskaja [6]
"M" I believe is the symbol for molarity.
4 0
4 years ago
Read 2 more answers
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