Answer : The correct option is, C.
Explanation :
In a given diagram, refraction phenomenon is observed in which an incident angle of a light ray is and the refracted angle of a light ray is which means the light bends towards the normal.
From this we can say that the light is passing through rarer medium to denser medium. In denser medium, the speed of light slows down.
(2) spiral path traveled by an electron toward the nucleus
(3) region of the most probable proton location
(4) region of the most probable electron location
Answer : Option 4) Region of the most probable electron location.
Explanation : As per the electron cloud model of the atom, an orbital is a region where the probability of finding an electron is highest. According to this model which was used to identify the probable location of the electrons when they go around the nucleus of an atom.
This electron cloud model was different from the older Bohr atomic model by Niels Bohr.
b) The actual temperature of the hydrogen gas is less than room temperature.
Answer:
Answer:
B) Use a conductivity apparatus
Explanation:
I got it right on Plato. Strong acids and strong bases will conduct more than weak acids and weak bases, so you can tell if one is stronger than the other by seeing which one conducts more.
0.80 M HCl(aq)?
(1) 3.6 mL (3) 20. mL
(2) 5.6 mL (4) 40. mL
Answer: 4) 40 ml
Solution :
According to the neutralization law,
where,
= molarity of NaOH solution = 0.30 M
= volume of NaOH solution = ?
= molarity of HCl solution = 0.80 M
= volume of HCl solution = 15 ml
Now put all the given values in the above law, we get the volume of NaOH solution.
Therefore, the volume of 0.30 M NaOH required to neutralize 15 ml of 0.80 M HCl is 40 ml.
The volume of 0.30 M NaOH(aq) needed to neutralize 15.0 milliliters of 0.80 M HCl(aq) is 40 milliliters.
The volume of 0.30 M NaOH(aq) needed to neutralize 15.0 milliliters of 0.80 M HCl(aq) can be determined using the concept of stoichiometry and the balanced equation for the reaction between NaOH and HCl. The balanced equation is:
NaOH(aq) + HCl(aq) → NaCl(aq) + H2O(l)
From the balanced equation, we can see that 1 mole of NaOH reacts with 1 mole of HCl. Therefore, the number of moles of HCl in 15.0 milliliters of 0.80 M HCl solution can be calculated as:
Moles of HCl = Volume (in liters) × Molarity = 0.015 liters × 0.80 moles/liter = 0.012 moles
Since 1 mole of NaOH reacts with 1 mole of HCl, we need 0.012 moles of NaOH. The volume of 0.30 M NaOH solution can be determined by rearranging the equation:
Volume (in liters) = Moles / Molarity = 0.012 moles / 0.30 moles/liter = 0.04 liters = 40 milliliters
Therefore, the volume of 0.30 M NaOH(aq) needed to completely neutralize 15.0 milliliters of 0.80 M HCl(aq) is 40 milliliters.
#SPJ6
Answer:
10.81 amu
Explanation:
The average atomic mass of Boron can be calculated as follows :
So, the average atomic mass of boron is 10.81 amu.