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2 years ago

Do bacterial cells have DNA?

Chemistry

2 answers:

Eduardwww [97]2 years ago

7 0

Answer: Yes, most bacterial cells have double stranded dna

Explanation:

NikAS [45]2 years ago

7 0

Answer:

yes

Explanation:

prokaryotic cells are unique bacteria that has DNA. it has a single cell called nucleoid in a cytoplasm that organise DNA differently

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The molecular mass of a substance is defined as the mass of how many molecules of the substance

vredina [299]

Answer:

Explanation: The molar mass of a substance is defined as the mass of 1 mol of that substance, expressed in grams per mole, and is equal to the mass of 6.022 × 10 23 atoms, molecules, or formula units of that substance

6 0

3 years ago

Notice that "SO4" appears in two different places in this chemical equation. SO42− is a polyatomic ion called "sulfate." What nu

masya89 [10]

Answer : The number placed in front of $CuSO_4$ should be, three (3).

Explanation :

Balanced chemical reaction : It is defined as the number of atoms of individual elements present on reactant side must be equal to the product side.

The given unbalanced chemical reaction is,

$CaSO_4+AlCl_3\rightarrow CaCl_2+Al_2(SO_4)_3$

This chemical reaction is an unbalanced reaction because in this reaction, the number of atoms of chloride and sulfate ion are not balanced.

In order to balanced the chemical reaction, the coefficient 3 is put before the $CuSO_4$ , the coefficient 2 is put before the $AlCl_3$ and the coefficient 3 is put before the $CaCl_2$ .

Thus, the balanced chemical reaction will be,

$3CaSO_4+2AlCl_3\rightarrow 3CaCl_2+Al_2(SO_4)_3$

Therefore, the number placed in front of $CuSO_4$ should be, three (3).

5 0

4 years ago

What is the number of moles of potassium chloride present in 148 g of kcl?

OLga [1]

The number of moles of one substance given the amount in mass can be calculated by the use of the molar mass. This is the mass of a compound per 1 mol of the said substance. For, KCl the molar mass is 74.55 g/ mol

148 g / 74.55 g/mol = 2 mol KCl

Hope this answers the question. have a nice day.

3 0

3 years ago

Read 2 more answers

Could someone explain this sentence for me ?

Ronch [10]

Answer:

Explanation:

to put this plainly after putting strong electrolytes in water they dissolve to nothing but ions they give you an example and definition of a strong electrolyte I suggest you read those and see if you come up with what I gave you they also tell you that not all strong electrolytes dissolve as strongly as others that are in the example.

4 0

2 years ago

Even though the para position is one carbon farther from the carboxy group than the meta position, p-cyanobenzoic acid is more a

Nuetrik [128]

Answer:

Dissociation of O-H bond is highly favorable in p-cyanobenzoic acid resulting to higher acidity as compared to m-cyanobenzoic acid.

Explanation:

In p-cyanobenzoic acid, adjacent carbon to carboxyl group (-COOH) gets a partial positive charge due to electron withdrawing resonating effect of carboxyl group as compared to m-cyanobenzoic acid.

Due to this partial positive charge on carbon atom in p-cyanobenzoic acid, O-H bond in -COOH group remains highly polarized towards oxygen atom. Hence, dissociation of O-H bond is highly favorable in p-cyanobenzoic acid resulting to higher acidity as compared to m-cyanobenzoic acid.

Resonance structures are given below.

6 0

3 years ago