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Pie
3 years ago
14

What is the molar mass of iron (III) oxide?

Chemistry
1 answer:
san4es73 [151]3 years ago
4 0

Answer:

159.69 g/mol

Explanation:

Here's the answer hope it helps

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What major component of water affects most its properties?
Alona [7]

Answer:

C. polarity

Explanation:

Water is polar that is why it is a universal solvent.

8 0
3 years ago
What are 2 examples of what happens when scientist do not have a standard system of measurement of the scientific community?
dolphi86 [110]

Answer:

Explanation:

The standard system of measurement is what is popularly referred to as SI unit (or international system of units). For example, the SI unit for length is basically in meters (m), which is convertible to millimeter (mm), centimeter (cm) or even kilometer (km).

If there is no standard system of measurement,

1) Scientists will not be able to compare data as every scientist will use a unit that suits him/herself which might make data incomparable as some units might be difficult to convert to other units or there conversion methods might even be debatable.

2) There might be a general lack of understanding of the research work done by a scientist/scientists in the scientific community. This is because the standard system of measurement affords scientists to communicate properly with the same or convertible units and based on 1. above, if scientists use any unit that isn't agreed upon, different/unknown/debatable units might make understanding of research works incomprehensible.

7 0
3 years ago
how many atoms of gold are present in 0.6 gm of 18 caral gold? ( 24 caral gold in 100% pure) atomic weight of gold = 197?​
julsineya [31]

Answer:

<h2>HERE'S YOUR ANSWER </h2>

We are given that the ring is made up of 20 carrat gold. 20 carrat gold means 20 parts of gold and 4 parts of other metal (usually copper or silver). Thus, the percentage of gold in 20 carrat gold will be

= (20 / 24) X 100

= 83.333 %

We can now calculate the mass of gold in the ring. We are given that the ring weighs 300 mg. So, the mass of gold in ring will be

= (83.333 / 100) X 300

= 250 mg

Thus, the mass of gold in 300 mg of the ring is 250 mg.

Now the molar mass of gold is 197 g. This means that there are 6.023 X 1023 atoms of gold in 197g of gold. Thus

197g of gold = 6.023 X 1023 atoms of gold

1g of gold = (6.023 X 1023 ) / 197 atoms of gold

250 mg or 0.25g of gold = (6.023 X 1023 X 0.25) / 197 atoms of gold

= 7.643 X 1020 atoms of gold

<h2>HOPE IT HELPS MAN ☺️</h2>

3 0
3 years ago
Expresar la cantidad de 620 000 con la sidra entera utilizando la potencia con base 10??
Nuetrik [128]
Respuesta:

= 6.2x10^5
5 0
3 years ago
What chemical element would you expect to find in amino acids?
Gnoma [55]
Carbon, hydrogen, oxygen and nitrogen
3 0
4 years ago
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