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4 years ago

Identify each definition that applies to the compound in red. Check all that apply.

Chemistry

1 answer:

andre [41]4 years ago

4 0

Answer:

Arrhenius acid & Bronsted-Lowry acid

Explanation:

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9. How many moles are in 6.022 x 1024 atoms of oxygen?

ra1l [238]

Answer:

1 mole

Explanation:

The mole (mol) is the amount of a substance that contains the same number of entities as there are atoms in exactly 12 g of carbon-12. One mole (1 mol) contains 6.022x1023 entities (to four significant figures).

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2 years ago

HURRY PLS!

marshall27 [118]

4 carbon chain is butane. With a triple bond it is butane. Since the triple bond is on the first carbon it can be called 1-butyne, or but-1-yne.

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3 years ago

A salt crystal has a mass 0.14mg,How many NaCl formula units does it contain?

klemol [59]

To determine the number of formula units in a sample of a compound you need to divide the number of grams by the formula mass. The formula mass of NaCl is 23 g/mol + 35.5 g/mol = 58.5 g/mol, and the number of grams of the sample is 0.14 mg * 1 g/ 1000 mg = 0.00014 g. Then the answer is 0.00014 g / 58.5 g = 2.30 * 10^ -6, which rounded to two significant figures is 2.4 * 10^ -6. So the answer is 2.4 * 10^-6 or 0.0000024

4 0

3 years ago

PLEASE HELP!!!!!!!!!

KonstantinChe [14]

Answer:

Option "C" is the correct answer to the following question.

Explanation:

Given:

Pressure in an automobile tire (P) = 1.88 atm

Temperature (K) = 25°C = 273 + 25 = 298 Kelvin

New temperature (K1) = 37°C = 273 + 37 = 310 Kelvin

Find:

New pressure in an automobile tire (P1) = ?

Computation:

$\frac{P}{K}= \frac{P1}{K1} \\\\\frac{1.88}{298}= \frac{P1}{310}\\\\1.9557$

New pressure in an automobile tire (P1) = 1.9557

New pressure in an automobile tire (P1) = 1.96 (Approx)

5 0

3 years ago

Compounds A and B are constitutional isomers (same molecular formula but

Naily [24]

Answer:

Trimethylacetaldehyde

Explanation:

For the unknow compound we have a molar mass of 86 g/mol. We have an even value for the mass, so the compound does not have nitrogen and we can have several posibilities:

A) $C_3H_2O_3$

B) $C_4H_6O_2$

C) $C_5H_1_0O$

D) $C_6H_1_4$

If we check the IR info a signal in 1730 cm-1 appears, this indicates that we have an oxo group (C=O). So, the D option can be discarded. The groups that can have the oxo group are: Carboxylic acids, Ketones and aldehydes.

We don have a signal in 3000 cm-1, so the carboxylic acid can be discarded. Now, is we check the info for the 1H NMR we only have 2 signals. If we only have 2 we will have a very symmetric compound.

By trial an error the find the compound Trimethylacetaldehyde (Figure 1).

3 0

3 years ago