Answers
Answer:
We know that in the decay process the sum of molecular number as well as molecular weight should be constant.
The following three reaction are as follows
1 .
Explanation:
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A balloon has a volume of 7.00 liters at a pressure of 740 mm Hg. If the temperature remains constant, at what pressure will the volume decrease to 2.00 liters?a. 749 mm Hg b. 52.9 mm Hg c. 211 mm Hg d. 2590 mm Hg
What is the concentration of a solution that has 15.0 g NaCl dissolved to a total of 750 ml?
why?
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Answer:
Answer is cerebellum. And this is the right answer
A.increase in speed
B.maintain a constant velocity until acted on by another force
C.come to a stop on its own
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Answer:B
Explanation: an object in motion will stay in motion until acted on by another force and an object in rest will stay in test until acted on by another force
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Answer:- 353.3 g
Solution:- The balanced equation is:
We start with given grams of calcium chloride and convert them to moles. Then using mol ratio, the moles of calcium phosphate are calculated and converted to grams as.
Molar mass of calcium chloride is 110.98 gram per mol and molar mass of calcium phosphate is 310 gram per mol.
The set is made using dimensional analysis as:
=
So, 353.3 grams of calcium phosphate can be formed.
Answer:
353.3g
Explanation:
1s22s22p3
1s22s22p4
1s22s22p5
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The electronic configuration that matches that of the model is 1s²2s²2p³; option B.
What is electronic configuration of atoms of elements?
Electronic configuration of atoms of elements is the arrangement of electrons in the electron shells or orbitals in atom.
The electronic configuration of an atom depends on the atomic number of the element.
The atomic number of nitrogen is 7. This means that it has seven electrons in its orbitals.
The electronic configuration that matches that of the nitrogen atom is 1s²2s²2p³.
In conclusion, the electronic configuration of nitrogen indicates that it has seven electrons in its orbitals.
Learn more about electronic configuration at: brainly.com/question/26084288
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Note that the complete question is given below:
Consider the model of the nitrogen atom. Which electron configuration matches this model?
1s22s22p2
1s22s22p3
1s22s22p4
1s22s22p5
b. They contain a carbonyl group with a nonpolar carbon-oxygen bond.
c. The functional group of this type of compound must always be on the end of a carbon chain.
d. The functional group of this type of compound must always be in the middle of a carbon chain.
Answers
Answer:
Option d.
Explanation:
Ketones contain a carbonyl groups as a functional group, which is a carbon bonded to oxygen with a double bond. In a ketone, the carbon is always bonded to two carbon atoms:
R-C(=O)-R'
The carbon in the carbonyl group has a hybridization sp2 (3 hybrid orbitals with an unhybridized p orbital), where two of the orbitals form sigma (σ) bonds with the other two carbons (R-C-R') and the other hybrid orbital form a sigma bond with the oxygen (C-O). The unhybridized p orbital on the carbon atom is used to form a pi (π) bond with the oxygen, thus forming the double bond (C=O).
The bond of a carbonyl group is polar, because of the difference of the electronegativity between the carbon atom and the oxygen atom.
Hence, from all of the above we can discard the option a, (the carbonyl groups exhibits sp2 hybridization), the option b (carbon-oxygen bond is a bond polar) and the option c (the group must always be in the middle of a carbon chain, the groups that are always in the end, are a aldehyde groups).
Therefore, the correct option is d, the functional group of this type of compound must always be in the middle of a carbon chain.
I hope it helps you!
Answer:
d. The functional group of this type of compound must always be in the middle of a carbon chain.
Explanation:
Earth emits
Back toward the sun in the form of
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Answer:
Explanation:We known that Earths energy machine is driven by sunlight which acts as fuel for this machine and to strike a balance between outgoing long wave radiation and short wave radiation there are many factors which are involved in this process.Sun emits this energy in the form of short wave radiation because of the huge energy it has and short wave radiation are higher in energy.Hence, they reach the earth surface mostly as visible and UV rays.After reaching the earths surface what happens with these rays is that they get absorbed by the clouds and other constituents of Earth.
Now, this energy needs to be emitted back in to space in order to balance out the energy budget of earth and that is why this energy is emitted back as long wave radiation which have less energy and also earth has less energy unlike the sun.Loss of this energy is essential as Earth looses most of its energy through this and results in cooling.But when this OLR decreases it should be a cause of concern for us.
This imbalance is caused by a wide range of different human induced activities which has a cumulative effect on the temperature of earth.These activities gives rise to a huge gain in the CO2 concentration which is why this word has gain so much popularity and a cause of widespread concern for us.At community level we contribute to this heating by increasing usage of personal automobiles rather than going for public transport , advancement in technology has greatly changed our lifestyles making it more simpler and easier but this demands more energy consumption.Landscape changes are one of the most important because its taking place at a faster rate.Most of the land being cleared off to built new houses which means clearing off the existing vegetation which leads to temperature rise.Setting up of Industry depending on its type can reduce the amount of OLR escaping the surface by introducing more amount of GHGs in to the atmosphere.
Its these small communities which add up to become the entire human population causing a massive damage and hence at community level if people realize and take necessary steps things will start to change.