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Hunter-Best [27]
3 years ago
10

Friends can __________.

Chemistry
2 answers:
inn [45]3 years ago
4 0
D) All of the above ..
Mademuasel [1]3 years ago
4 0

Answer:

the answer would be d. all of the above

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7 0
3 years ago
Draw the structural formula for 1 bromo 3 phenyl 5 heptyne
MrRissso [65]

See Figure 4 below.

1. Draw a 7-carbon chain and number the carbon atoms (<em>Figure 1</em>).

2. Insert a triple bond between atoms 5 and 6 (<em>Figure 2</em>).

3. Attach a phenyl group to atom 3 (<em>Figure 3</em>).

4. Attach a Br to atom 1 (Figure 4).

And you have your structure.

<em>Note</em>: The C≡C triple bond takes <em>priority</em> in the naming, so we must number the chain from the other end. The correct name is

<em>7-bromo-5-phenylhept-2-yne </em>(all one word).

6 0
3 years ago
Which of the following is not part of Daltons atomic theory
Harman [31]
<span>Most of the atom's mass and all of its positive charge is contained in a small core called the nucleus.</span>
8 0
3 years ago
Liquid A and liquid B form a solution that behaves ideally according to Raoult's law. The vapor pressures of the pure substances
Rama09 [41]

Answer:

Vapor pressure of solution → 151.1 Torr

Option 2.

Explanation:

Raoult's Law is relationed to colligative property about vapor pressure. A determined solute, can make, the vapor pressure of solution decreases.

ΔP = P° . Xm

where Xm is the mole fraction of solute, P° (vapor pressure of pure solvent)

and ΔP = Vapor pressure of pure solvent - Vapor pressure of solution.

In order to determine the vapor pressure of solution, we need to determine, the vapor pressure of B and A in the solution

B's pressure = P° B . Xm

When we add A to B, A works as the solute and B, as the solvent.

Vapor pressure of pure B is 135 torr. (P° B)

In order to determine, the Xm, we use the moles of A and B

Xm = 5.3 mol of B / (1.28 + 5.3) → 0.806

B's pressure = 135 Torr . 0.806 → 108.81 Torr

If mole fraction of B is 0.806, mole fraction for A (solute) will be (1 - 0.806)

A's pressure = 218 Torr . 0.194 → 42.3 Torr

Vapor pressure of solution is sum of vapor pressures of solute + solvent.

Vapor pressure of solution = 42.3 Torr + 108.81 Torr → 151.1 Torr

6 0
3 years ago
How do the isotopes of an element differ?
ra1l [238]
They have different neutron number and thus different mass number, but they are the same element.
5 0
3 years ago
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