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Basile [38]
3 years ago
13

1. Sometimes scientists need to be able to replicate the results of a scientific experiment. Explain in what situation(s) this w

ould be necessary.
2. Scientific theories can be modified as new information becomes available. Explain the possibility of this happening and why it may change a theory.

3. Using the steps of the scientific method, explain an example of how you use the scientific method in your daily life.

4. Compare and contrast science and pseudoscience. Explain why one is only used in the scientific community to solve problems.

5. Create a number line in your notes using the metric system. What are the base units for the metric system. Which is bigger, a kg or g?
Chemistry
1 answer:
Andrej [43]3 years ago
4 0
I need this also I’m just here for points
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Using the “rule of 8” explain why carbon is the backbone of organic molecules
Sergeu [11.5K]

Answer:

Carbon has 4 valence electrons (electrons that are used in bonding), and therefore it can make 4 bonds which is the most one can (other than some exceptions, but in general it is the most). It wants to make 4 bonds so it can reach a full octet of 8 elections, hence the rule of 8.

Explanation:

8 0
2 years ago
Read 2 more answers
An ion with 11 protons 12 neutrons and a charge of + 1 has an atomic number of
posledela

Answer:

11 electrons total and 23amu

Explanation:

This tells us that sodium has 11 protons and because it is neutral it has 11 electrons. The mass number of an element tells us the number of protons AND neutrons in an atom (the two particles that have a measurable mass). Sodium has a mass number of 23amu.

5 0
2 years ago
Through what process do all stars produce their energy?
Deffense [45]

nuclear fusion

Stars produce their energy through nuclear fusion. For most stars, this process is dominated by a process called the "proton-proton chain," a sequence of events that transforms four hydrogen atoms into one helium atom.

5 0
1 year ago
Suppose you see a crescent Moon. How do you know if it is waxing or waning?
nasty-shy [4]

Answer:

waxing is in the evening and waning is in the morning if you cant see the moon in the evening it is waning if you can see it in the evening it is waxing

5 0
2 years ago
Determine the maximum amount of Fe that was produced during the experiment. Explain how you determined this amount.
dsp73

Answer:

5 moles of Fe

Explanation:

The equation of the reaction is;

2 Al(s) + Fe 2O 3(s) --> 2Fe (s) + Al 2O 3 (s)

Now;

1 mole of Fe2O3 require 2 moles of Al

3 moles of Fe2O3 requires 3 × 2/1 = 6 moles of Al

Hence Al is the limiting reactant.

If 2 moles of Al yields 2 moles of Fe

5 moles of Al yields 5 × 2/2 = 5 moles of Fe

5 0
2 years ago
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