Answer:
When molecular hydrogen (H2) and oxygen (O2) are combined and allowed to react together, energy is released and the molecules of hydrogen and oxygen can combine to form either <em><u>water </u></em>or <em><u>hydrogen </u></em><em><u>peroxide </u></em>. These two processes are represented by the two chemical equations shown at right.
<em><u>HEY!</u></em><em><u>!</u></em><em><u>^</u></em><em><u>^</u></em>
<em><u>have </u></em><em><u>a </u></em><em><u>good </u></em><em><u>day </u></em><em><u>^</u></em><em><u>^</u></em>
<em><u>thank </u></em><em><u>me </u></em><em><u>later </u></em><em><u>^</u></em><em><u>^</u></em>
<em><u>carryonlearing </u></em><em><u>^</u></em><em><u>^</u></em><em><u>^</u></em>
They have different mass numbers
Answer:
42) 76
b)70
Explanation:
52) because you don't want to confuse different units. one ex)1cm is 1/ 100 of a meter
55) 1 km=1,000 meters
b) 10 decimterers = 1 meter
56)The SI standard for length is the meter the standard for volume is the cubic decimeter
ex) 1cm³=1mL
57) The two scales are the same. but there are no negative temperatures in Kelvin. 0 Kelvin is the lowest temperature possible.
0 Kelvin= -274.5 Celsius
Answer:
C. It has no delocalised electrons and each carbon atom forms four covalent bonds with other carbon atoms.
Explanation:
- Diamond is composed solely by carbon atoms. As the difference of electronegativity between atoms is 0, diamond is a <em>fully covalent compound</em>.
- The lack of electrical conductivity stems from a<em> lack of available electrons</em>, this means that there are no delocalised electrons.
The information in the first point discards options A and D, while the second point discards option B. Thus the answer is option C.