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3 years ago

What hypothesis did Miller-Urey test in their experiment?

Chemistry

1 answer:

Marat540 [252]3 years ago

8 0

<span>A. Organic molecules can form in a reducing atmosphere

Hope this helps!</span>

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Which subatomic particles have approximately the same mass?

igor_vitrenko [27]

Answer:

The 3rd one is correct

Explanation:

Protons and neutrons have approximately the same mass, about 1.67 × 10−24 grams, which scientists define as one atomic mass unit (amu) or one Dalton. Each electron has a negative charge (−1) equal to the positive charge of a proton (+1). Neutrons are uncharged particles found within the nucleus.

8 0

3 years ago

Read 2 more answers

Which of the following statements about the reaction quotient, Q is false? a. The value of Q can be used to predict equilibrium

irakobra [83]

Answer:

The correct statements are :b, c , d, and e.

Explanation:

Equilibrium constant is defined as the ratio of concentration of products to the concentration of reactants each raised to the power their stoichiometric ratios. It is expressed as $K_{eq}$

K is the constant of a certain reaction when it is in equilibrium, while Q is the equilibrium quotient of activities of products and reactants at any stage other than equilibrium of a reaction.

$Q_c$ , reaction will move in forward direction and concentration of products will increase.
$Q_c>K_c$ , reaction will move in backward direction and concentration of reactant will increase.
$Q_c=K_c$ reaction is at equilibrium.

4 0

3 years ago

How much oxygen will contain the same number of atoms as the number of molecules in 73 g of HCI?

expeople1 [14]

Answer:

64g of O2.

Explanation:

We'll begin by calculating the number of molecules in 73g if HCl.

This is illustrated below:

From Avogadro's hypothesis, we understood that 1 mole of any substance contains 6.02×10²³ molecules. This implies that 1 mole of HCl also contains 6.02×10²³ molecules

1 mole of HCl = 1 + 35.5 = 36.5g

Thus, if 36.5g of HCl contains 6.02×10²³ molecules, then 73g of HCl will contain = (73 x 6.02×10²³)/36.5 = 1.204×10²⁴ molecules.

Therefore, 73g of HCl will contains 1.204×10²⁴ molecules.

Now, we shall determine the mass of oxygen that will contain 1.204×10²⁴ molecules.

This can be obtained as follow:

1 mole of O2 = 16x2 = 32g

32g of O2 contains 6.02×10²³ molecules.

Therefore, Xg of O2 will contain 1.204×10²⁴ molecules i.e

Xg of O2 = (32 x 1.204×10²⁴)/6.02×10²³

Xg of O2 = 64g

Therefore, 64g of O2 will contain the same number of molecules (i.e 1.204×10²⁴ molecules) in 73g of HCl.

5 0

4 years ago

10/12

Kisachek [45]

Explanation:

energy is neither created nor destroued

6 0

3 years ago

An element with 5 valence electrons would be a

agasfer [191]

Answer:

ask you subject teacher

Explanation:

4 0

3 years ago