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bogdanovich [222]
3 years ago
12

Delta S will be positive for the reaction ________. a. 2Hg (l) + O2(g) ----------> 2HgO (s) b. 2NO2 (g) -------> N2O4(g) c

. CO2(g) --------> CO2(s) d. 2H2 (g) + O2(g) ------> 2H2O(g) e. BaF2(s) ------> Ba2 (aq) + 2F- (aq)
Chemistry
1 answer:
nordsb [41]3 years ago
8 0

Answer:

BaF2(s) ------> Ba2 (aq) + 2F- (aq)

Explanation:

Entropy refers to the degree of disorderliness in a system. Processes that lead to greater disorderliness in a system are said to increase the entropy of the system or lead to a positive value of ΔS.

If we consider the process, BaF2(s) ------> Ba2 (aq) + 2F- (aq), we will notice that ions were produced in solution thereby increasing the disorderliness of the system.

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A salt shaker filled with 17.0g sodium chloride contain how many moles?
kati45 [8]
The molecular formula for sodium chloride is NaCl. The sum of their atomic weights is (22.99 grams/mole + 35.45 grams/mole) = 58.44 grams/mole
take (17.0 grams)/(58.44 grams/mole), which equals 0.291 moles of NaCl.

8 0
4 years ago
If Mary likes Johnny, but Johnny likes Katie, and Katie likes Mary. What do they do?
RUDIKE [14]

Answer:

love triangle?- orr they can figure something out

8 0
3 years ago
Read 2 more answers
Suppose a sodium hydroxide solution was standardized against pure solid primary standard grade KHP. If 0.4798 g of KHP required
Readme [11.4K]

Answer:

The NaOH solution has a molarity of 0.052 M

Explanation:

<u>Step 1:</u> Data given

Mass of KHP = 0.4798 grams

Volume of NaOH= 45.22 mL = 0.04522 L

Molar mass of NaOH = 40 g/mol

Molar mass of KHP = 204.22 g/mol

<u>Step 2</u>: Calculate moles of KHP

Moles KHP = mass KHP / Molar mass KHP

Moles KHP = 0.4798 grams / 204.22 g/mol

Moles KHP = 0.00235 moles

<u>Step 3</u>: Calculate moles of NaOH

KHP here acts as a mono-acid so, the number of moles of NaOH = number of moles KHP = 0.00235 moles

<u>Step 4: </u>Calculate molarity of NaOH

Molarity NaOH = moles NaOH / volume NaOH

Molarity NaOH = 0.00235 moles / 0.04522 L

Molarity NaOH = 0.052 M

The NaOH solution has a molarity of 0.052 M

6 0
4 years ago
Why should carbonated beverages be kept cold?
Verdich [7]
A because of the temperature keeps gases like carbon dioxide dissolved
6 0
3 years ago
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A sample of motor oil has a mass of 440 g and a volume of 0.27 L. What is its<br> density (in g/mL)?
stepan [7]

Answer:

<h2>Density =1.63 g/mL</h2>

Explanation:

The density of a substance can be found by using the formula

Density =  \frac{mass}{volume}

To find the density in g/mL , we must first convert the volume from L to mL

From the question

mass = 440 g

1 L = 1000 mL

0.27 L = 0.27 × 1000 = 270 mL

volume = 270 mL

Substitute the values into the above formula and solve for the Density

That's

Density =  \frac{440}{270}

= 1.629629...

We have the final answer as

<h3>Density =1.63 g/mL</h3>

Hope this helps you

3 0
3 years ago
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