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3 years ago

2. Which of the following does not have a nucleus? a. prokaryotes b. eukaryotes c. prokaryotes and eukaryotes

Chemistry

2 answers:

Lilit [14]3 years ago

4 0

Answer:a. Prokaryotes

Explanation:

qwelly [4]3 years ago

3 0

Answer:

Erythrocytes

Erythrocytes do not contain a nucleus. This would make answer choice "A" correct. Erythrocytes are red blood cells and these cells differ from the other cells of the body because of the absence of the nucleus. All the other cells noted have nuclei.

Explanation:

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How many grams are in 2.40 moles of sodium hydroxide (NaOH)?

Bogdan [553]

Answer:

96g

Explanation:

Given parameters:

Number of moles of NaOH = 2.4moles

Unknown:

Mass of NaOH = ?

Solution:

The mass of a substance given the number of moles can be found using the expression below;

Mass of NaOH = Number of moles x molar mass;

Molar mass of NaOH = 23 + 16 + 1 = 40g/mol

Now input the parameters and solve;

Mass of NaOH = 2.4 x 40 = 96g

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3 years ago

Suppose you held two magnets a short distance apart,then let go. what would happen?

Murljashka [212]

The two magnets ought to join together given that at least, if not both, have a strong enough magnetic force to do so.

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3 years ago

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How does Barium obey the octet rule when reacting

Kryger [21]

Answer:

it gives up electrons B. because the bond between the electrons is not very strong due to how few of them there are

Explanation:

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3 years ago

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What part of a flowering plant becomes fruit? seed ovary stem spore

lord [1]

Answer:

the ovary

Explanation:

The fertilized ovule becomes the seed, and the ovary becomes the fruit. Petals are also important parts of the flower, because they help attract pollinators such as bees, butterflies and bats. You can also see tiny green leaf-like parts called sepals at the base of the flower.

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4 years ago

A sample of aluminum, which has a specific heat capacity of , is put into a calorimeter (see sketch at right) that contains of w

Oksanka [162]

Complete Question

A sample of aluminum, which has a specific heat capacity of 0.897 JB loc ! is put into a calorimeter (see sketch at right) that contains 200.0 g of water. The aluminum sample starts off at 85.6 °C and the temperature of the water starts off at 16.0 °C. When the temperature of the water stops changing it's 20.1 °C. The pressure remains constant at 1 atm. Calculate the mass of the aluminum sample.

Answer:

$M=58g$