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aalyn [17]
2 years ago
11

Can someone help me please

Chemistry
1 answer:
lisabon 2012 [21]2 years ago
8 0

Answer:

  • 4) x = 4

Explanation:

Using <u>Intersecting Chords Theorem</u>,

AB × CB = BE × BD

  • ( 4x + 2) × 8 = 9 × ( 4x )
  • 32x + 16 = 36x
  • 16 = 36x -32x (Subtract)
  • 16 = 4x (Divide both sides by 4)
  • x = 16/ 4 (Divide)
  • x = 4
<h3><u>--------------------------</u></h3>
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Carboxylic acids: considered as weak acids due to they ionize in solution to give -COO⁻ and H⁺, they are abundant in nature, they can form intermolecular hydrogen bonds so they exist as dimers (remember that alcohols also can form hydrogen bonds).
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3 0
3 years ago
How many calories of heat are needed to raise the temperature of 33.0 g of diethyl ether from 14.0 ∘C to 25.0 ∘C ?
Xelga [282]

The amount of heat (in calories) needed to raise the temperature is 324.885 calories

<h3>How to determine the temperature change </h3>

We'll begin by obtaining the temperature change. This can be obtained as followed:

  • Initial temperature (T₁) = 14 °C
  • Final temperature (T₂) = 25 °C
  • Change in temperature (ΔT) = ?

ΔT = T₂ - T₁

ΔT = 25 - 14

ΔT = 11 °C

<h3>How to determine the heat (in Calories)</h3>

The amount of heat needed to raise the temperature can bee obtaimedals follow:

  • Mass (M) = 33 g
  • Change in temperature (ΔT) = 11 °C
  • Specific heat capacity (C) of diethyl ether = 0.895 cal/g°C
  • Heat (Q) =?

Q = MCΔT

Q = 33 × 0.895 × 11

Q = 324.885 calories

Thus, the amount of heat needed is 324.885 calories

Learn more about heat transfer:

brainly.com/question/10286596

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3 0
1 year ago
I learned that ____is a substances used to dissolve a ______. Its is of the _____amount. There are substances that can be dissol
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Answer:

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3 years ago
PLEASE HELP ASAP MOLES TO MOLECULES
Vlada [557]

Answer:

4.77mol is the correct answer

7 0
3 years ago
Read 2 more answers
A. Density of Liquids
morpeh [17]

Answer:

Mass of liquid: 20.421g

Density= 1.0109405940594 g/mL

Explanation:

Mass of liquid

To find mass of liquid you take the mass of beaker + liquid (171.223g) and subtract it from the Mass of beaker (beaker without the water). The difference is the answer.

171.223g - 150.802g = 20.421g

Density

To find density you use the formula Mass/Volume. Take the Volume given, and the mass of the liquid you just found.

20.421mL/20.421g = 1.0109405940594 g/mL

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3 years ago
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