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dexar [7]
2 years ago
5

Kinetic energy is energy an object has because of its:

Chemistry
1 answer:
ch4aika [34]2 years ago
6 0

Answer:

I think its Motion

Explanation:

 

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A student used 1.168g of an unknown weak acid and titrated it against 28.75 mL of 0.105M NaOH to reach the equivalence point. Wh
Vaselesa [24]

Answer:

The molar mass of the unknown acid is 386.8 g/mol

Explanation:

Step 1: Data given

Mass of the weak acid = 1.168 grams

volume of NaOH = 28.75 mL = 0.02875 L

Molarity of NaOH = 0.105 M

Since we only know 1 equivalence point, we suppose the acid is monoprotic

Step 2: Calculate moles NaOH

Moles NaOH = molarity NaOH * volume NaOH

Moles NaOH = 0.105 M * 0.02875 L

Moles NaOH = 0.00302 moles

We need 0.00302 moles of weak acid to neutralize the NaOH

Step 3: Calculate molar mass of weak acid

Molar mass = mass / moles

Molar mass = 1.168 grams / 0.00302 moles

Molar mass = 386.8 g/mol

The molar mass of the unknown acid is 386.8 g/mol

3 0
3 years ago
Calculate the temperature of 2.0 moles of a gas occupying a volume of 5.0 L at 2.46 atm. (R = 0.08125 L atm/mol L)
Serjik [45]

Answer:

Hi how are you doing today Jasmine

7 0
3 years ago
Read 2 more answers
The reaction of pyrrole with bromine forms predominantly __________. View Available Hint(s) The reaction of pyrrole with bromine
xenn [34]

Answer:

a) 2-bromopyrrole

Explanation:

Our options for this questions are:

a) 2-bromopyrrole

b) 2,3-dibromopyrrole

c) N-bromopyrrole

d) 3-bromopyrrole

To understand how the reaction works we have to start with the <u>resonance structures</u>. (Figure 1), on these structures, we will obtain a n<u>egative charge on carbon 2</u> in the pyrrole ring, therefore on this carbon we can generate an attack to an electrophile.

The second step is to check how the mechanism take place. An <u>electrophile is generated</u> by the Br_2 and FeBr_3. This electrophile can be <u>attacked</u> by the negative charge on carbon 2 producing the 2-bromopyrrole. (See figure 2).

I hope it helps!

5 0
3 years ago
If element x has 72 protons, how many electrons does it have? electrons
saw5 [17]
Elements have neutral charges such as Na so if X has 72 protons + charges then it must also have 72 electrons with - charges

hope that helps
6 0
3 years ago
Give the nuclear symbol for the isotope of potassium for which a=40?
KATRIN_1 [288]

<span>nuclear symbol consists of three parts: 1. the symbol of the element; 2. the atomic number of the element;3. the mass of the element. for the above problem, the symbol for potassium is k. it's atomic number is 40. the number of protons is 19. so we denote this in the following nuclear symbol; 40 k 19</span>

4 0
3 years ago
Read 2 more answers
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