Answer:
all these are physical properties except release of heat so it's probably heat energy given off
Answer: due to the nature and complexity of some documents, an accessible version of the ... 1. Grade 6 Science Learning Activity. Ocean, Atmosphere, & Climate Unit ... We started this unit by making initial claims about why Christchurch's air ... Ocean currents move in the same direction as the prevailing wind in some places in the.
Explanation:Ocean water is on the move, affecting your climate, your local ecosystem, and the ... Map of temperature of the North Atlantic Ocean shows the warm Gulf Stream current along the. Winds, water density, and tides all drive ocean currents. ... much of Northern Europe significantly warmer than other places equally as far north.
Answer:
After 2000 years, the first after will be 4m lower.
After 2000 years, the second area will be 14m higher.
Explanation:
From the given information:
At the first area:
if the wind is eroding at 2 mm/year, then after 2000 years; we have:
2 mm/year × 2000 year = 4000 mm
4000 mm to meters, we have:
= 4 m lower
At the second smaller area:
Given that the wind is depositing it at the rate of 7 mm per year;
Then:
7 mm/year × 2000 year = 14000 mm
=14 m higher
I will rewrite this question so the options are presented more clearly:
Rank in increasing polarity the carbon-nitrogen single, double and triple bonds.
a) not enough information to compare
b) triple < double < single
c) all have the same polarity
d) single < double < triple
The answer we are looking for is b) triple < double < single.
We determine bond polarity by comparing the electronegativities of the two atoms involved in the bond, in this case carbon-nitrogen. Nitrogen is more electronegative than carbon, with electronegativities of 3.04 and 2.55, respectively. You may expect that the electronegativities of the atoms remains the same in each bond, but this is not the case.
In the case of a C-N single bond, the carbon atom is sp³ hybridized. In a C=N double bond, the carbon is sp² hybridized. The more s-character an atom has leads to an increase in the electronegativity of the atom since s-orbitals hold the electrons much tighter. By increasing the s-character of the carbon atom from sp³ to sp², we are increasing the electronegativity which leads to a decrease in the difference in electronegativities between carbon and nitrogen. Therefore, a C-N single bond is more polar than a C=N double bond. This trend continues with a C≡N as the carbon now is sp hybridized with even more s-character and becomes more electronegative still, thus decreasing the polarity further.
