c. 0.05843 would be the correct answer.
This is because significant figures are measured by starting from the first non-zero digit, and the first non-zero digit in option c. is 5, and it ends at 3. If you count all the figures from 5 through 3, you'll find that there's 4 figures in total (5, 8, 4, 3).
Answer:
The state of matter is liquid
Explanation:
Since the frozen point in celcius is 32 then at 30 its still liquid
<h3>
Answer:</h3>
69.918 g
<h3>
Explanation:</h3>
<u>We are given;</u>
- Mass of iron oxide as 100 g
We are supposed to determine the maximum theoretical yield of Iron from the blast furnace;
- The equation for the reaction in the blast furnace that extracts Iron from iron oxide is given by;
Fe₂O₃ + 3CO → 2Fe + 3CO₂
- We can first determine moles of Iron oxide;
Moles = Mass ÷ Molar mass
Molar mass of Fe₂O₃ = 159.69 g/mol
Therefore;
Moles of Fe₂O₃ = 100 g ÷ 159.69 g/mol
= 0.626 moles
- Then we determine moles of Iron produced
From the equation;
1 mole of Fe₂O₃ reacts to produce 2 moles of Fe
Therefore;
Moles of Fe = Moles of Fe₂O₃ × 2
= 0.626 moles × 2
= 1.252 moles
- Maximum theoretical mass of Iron that can be obtained
Mass = Moles × molar mass
Molar mass of Fe = 55.845 g/mol
Therefore;
Mass of Fe = 1.252 moles × 55.845 g/mol
= 69.918 g
Therefore, the maximum theoretical mass of Iron metal obtained is 69.918 g
To lower the amount of trash my family produces, we can use reusable bottles, cutlery, and dishes. This would be a better alternative to using both paper, and plastic items which would increase trash output. Reusable items like dishes can be used multiple times without throwing them away, instead of having to use plastic items that we’d throw away after using once.
Tin has 50 protons
Tin has 50 electrons
Mercury has 80 protons
Mercury has 80 electrons
<u><em>So True Mercury does have more electrons and protons than Tin
</em></u><u><em /></u><em />Hope this helps:D
have a great rest of a brainly day!
