For starters, your raft would have to be waterproof. It would have to be sturdy enough not to flip and big enough to hold you and anything else you might have with you. A chemical property might be that the tar you cover your raft with will prevent the water from getting in your raft. Hope I helped!
the correct number of significant digits
addition= -3.220g = 4 significant digits.
subtract= -5.820g = 4 significant digits
<h3>How are significant digits determined?</h3>
- Use the following three rules to determine how many significant figures are present in a number:
- Digits that are not zero are always important. Any zeros in the range of two significant digits are noteworthy.
- ONLY in the decimal section are a final zero or following zeros important.
<h3>What are examples of significant digits?</h3>
- Any two non-zero digits that are separated by a zero are important. For instance, the number 108.0097 has seven significant digits.
- Every zero that is both to the right and left of a non-zero digit and the decimal point is never meaningful.
- For instance, the number 0.00798 had three significant digits.
learn more about significant digits here
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Proton relative mass is +1
Neutron relative mass is 0
Electron relative mass is -1
Answer:
Equation is: 2CH4(g) <----> C2H2(g) + 3H2(g)
Explanation:
In the reaction above;
1.) At equilibrium, the rate of the forward reaction (CH4 decomposing into C2H2 and H2) is equal to the rate of the reverse reaction (C2H2 and H2 reacting to form CH4). This is because it is a reversible reaction.
2.) At equilibrium, the concentrations of all substances are not changing.
3.) At equilibrium, both the forward and reverse reactions are still occurring.
But if the pressure of the system is increased, the equilibrium position will shift to the left according to le Chatelier's principle since there are fewer number of moles of gaseous atoms at the left.
