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nirvana33 [79]
3 years ago
12

(reply if you know the answer or get reported) How many atoms are there in 5 grams of silicon? ​

Chemistry
1 answer:
joja [24]3 years ago
4 0

Similarly, for one gram atomic weight of silicon with atomic weight of 28 grams, one mole of silicon still contains 6.022 × 1023 silicon atoms.Answer:

Explanation:

hope it helps

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The concentration of sugar in a soft drink is measured to be 10.5%. how many grams of sugar are in 125 g of the drink?
viva [34]
The grams  of the sugar in 125 g of the drink is calculated as below

%M/m) = mass of the solute (sugar)/  mass of the  solvent(drink) x100

let the mass  of the solute(sugar) be represented by y

convert % into fraction by dividing by 100 = 10.5/100

10.5/100 = y/125

by cross multiplication

100y =1312.5
divide both side by 100

y=13.125  grams


5 0
4 years ago
Redox titrations are used to determine the amounts of oxidizing and reducing agents in solution. For example, a solution of hydr
xxTIMURxx [149]

Answer:

0.374 g

Explanation:

Hello,

Since both the molarity and the volume allows us to know the moles of potassium permanganate, and we already have the balanced chemical reaction, the stoichiometric procedure that is attached in the picture, is developed to substantiate the the titrated mass of hydrogen peroxide was 0.374 g.

Best regards.

6 0
4 years ago
Where do the protons and electrons come from that are used in the electron transport chain?
blondinia [14]
The energy generated by the movement of electrons is used to pump electrons across the inner mitochondrial membrane to an area of higher concentration. 17. Where do these protons (H+) come from? The originally came from a glucose molecule and were carried to the electron transport chain by NADH and FADH2.

The answer would be glucose molecule.
5 0
3 years ago
The atoms of the isotopes of a particular element vary in the number of
satela [25.4K]
<span>Neutrons.
The nucleus of an atom contains two kinds of particles, protons and neutrons. The number of protons determines what element the atom is. Atoms that have the same number of protons but different numbers of neutrons are isotopes of the same element. For example, if two atoms both have 1 proton in their nuclei, but one atom has 0 neutrons and the other has 1 neutron, both atoms are hydrogen but they are different isotopes of hydrogen.</span>
5 0
3 years ago
Are all black holes the same size? Explain
julsineya [31]

Answer:

According to my search, the answer is this.

Black holes come in several different sizes which are defined by their mass. Small black holes are usually the result of a relatively short and violent collapse of a star.

Explanation:

It only has mass. The amount of matter that has fallen into the black hole determines its mass. The more mass/matter a singularity has the larger its event horizon. So, the greater the black hole's mass the larger it is.

3 0
2 years ago
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