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drek231 [11]
3 years ago
15

Copper has an atomic number of 29 that means there are 29 protons in the nucleus of each copper atom that's what the atomic numb

er the number of protons in an atom in the atom of a certain element if one copper atom contains 29 protons how many electrons are in 1 atom of copper?
Chemistry
1 answer:
Aliun [14]3 years ago
6 0
29 electrons assuming no other charges
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The acceleration due to gravity of all objects in free fall is the same. Why, then, do some objects fall through the air at a di
kenny6666 [7]

Answer:

Displacement. (I think)

Explanation:

When you observe both a bowling ball and a feather falling to the ground at the same time, you see that the feather falls much slower. This is because the feather displaces the air around it.

Look closer at the feather. Notice that all the feather is are fibers sprouting from the quill. The air moves through these fibers slower and displaces the air around them. this is what helps birds to fly and glide.

Now observe someone in a flight suit. A flight suit has a type of fabric webbing in-between the arms and legs of the wearer. This allows them to glide through the air (when they gain lift) because the higher surface area of a light material displaces the air around it.

Regards! (And sorry if I'm wrong!)

6 0
3 years ago
Which rock types tend to weather into rounded shapes
Sunny_sXe [5.5K]

Explanation:

Structureless rocks like granite and other intrusive rocks tend to weather into characteristic rounded shapes through this process

8 0
3 years ago
Is H20 a balanced equation?
Nat2105 [25]

Answer:

no it's not

Explanation:

because H2+O2=H2O

so the balanced form is

H2 +O2=2H2O

8 0
3 years ago
A chemist dissolves 484 .mg of pure perchloric acid in enough water to make up 240.mL of solution. Calculate the pH of the solut
sdas [7]

Answer:

1.70

Explanation:

The molar mass of perchloric acid is 100.46 g/mol. The moles corresponding to 484 mg (0.484 g) are:

0.484 g × (1 mol/100.46 g) = 4.82 × 10⁻³ mol

4.82 × 10⁻³ moles are dissolved in 240 mL (0.240 L) of solution. The molar concentration of perchloric acid is:

4.82 × 10⁻³ mol/0.240 L = 0.0201 M

Perchloric acid is a strong monoprotic acid, that is, it dissociates completely, so [H⁺] = 0.0201 M.

The pH is:

pH = -log [H⁺] = -log 0.0201 = 1.70

8 0
3 years ago
If a small amount of br2 is added to an aqueous solution of an unknown monosaccharide, the reddish-brown color of br2 will disap
Natalija [7]
Answer:
            <span>If a small amount of br2 is added to an aqueous solution of an unknown monosaccharide, the reddish-brown color of br2 will disappear if the monosaccharide is <u>an Aldose</u>.

Explanation:
                  This happens because the Aldose contains a carbonyl group called Alsedyde. Bromine being a oxidizing agent oxidizes the aldehyde functional group to Carboxylic Acid moiety. While this test is not positive in case of Ketonic Functional group.</span>

4 0
3 years ago
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