The structure of
Alanine is shown below,
Except the carbon atom of carbonyl group which is
Sp² Hybridized, all remaining atoms are
Sp³ Hybridized. The hybridization of each element is depicted in a box below,
The question is incomplete, the complete question is;
The table above summarizes data given to a student to evaluate the type of change that took place when substance X was mixed with water. The student claimed that the data did not provide enough evidence to determine whether a chemical or physical change took place and that additional tests were needed. Which of the following identifies the best way to gather evidence to support the type of change that occurred when water and Xwere mixed?
A. Measuring the melting point of the mixture of water and X
B. Adding another substance to the mixture of water and X to see whether a solid forms
C Measuring and comparing the masses of the water, X, and the mixture of water and X
D Measuring the electrical conductivities of X and the mixture of water and X
Answer:
D Measuring the electrical conductivities of X and the mixture of water and X
Explanation:
Unfortunately, I am unable to reproduce the table here. However, from the table, the temperature of the of the mixture of the solid X and water was 101.6°C. This is above the boiling point of water and way below the temperature of the solid X.
This goes a long way to suggest that there was some kind of interaction between the water and X which accounted for the observed temperature of the system of X in water.
The only way we can be able to confirm if X actually dissolved in water is to measure the conductivity of the water. dissolved solids increase the conductivity of water.
If the atom is neutral (meaning, not charged) the number of electron is equal to the number of protons. The mass number of an atom is the sum of the number of proton and the number of neutrons. From the given above, the mass number of gallium is 31 + 39. The answer is letter D. 70.
Answer:
Explanation:
The main task here is that there are some missing gaps in the above question that needs to be filled with the appropriate answers. So, we are just going to do rewrite the answer below as we indicate the missing gaps by underlining them and making them in bold format.
SO; In the quantum-mechanical model of the hydrogen atom.
As the n level increases. the energy <u>increases</u> and thus levels are <u>closer to </u>each other. Therefore, the transition <u>3p→2s</u> would have a greater energy difference than the transition from <u>4p→3p.</u>
1. Solve the mass of NH4+ ions = (3%/100%)(1x10^4kg) = 300 kg = 300,000 g
2. Compute for the amount that will be converted as a bacterial tissue:
NH4+ ions consumed by bacteria = (95%/100%)(300,000 g) = 285,000 g
3. Convert the mass of NH4+ ion calculated in step 2 into the # of moles:
moles of NH4+ = mass of NH4+ / MW of NH4
moles of NH4+ = 285,000 g / 18 g/mol = 15,833.33 mol
the stoichiometric ratio of C5H7O2N and NH4 is 1 : 55 grounded on the given balanced chemical equation:
moles of C5H7O2N = moles of NH4+ x (1 mole of C5H7O2N / 55 moles of NH4+)
moles of C5H7O2N = 15,833.33 moles x (1/55) = 303.03 moles
4. Convert the moles of C5H7O2N into grams:
mass of C5H7O2N = # of moles of C5H7O2N x MW of C5H7O2N
= 303.03 moles x 113 g/mol
= 34,242.39 grams
= 34.34 kg
