Correct Answer: Cation -A
Given that both the cations, cation-A and cation -B have the same concentrations.
Charge on cation-A is +3, while charge on cation- B is +1. Cations with higher charge can easily substitute those present on the clay minerals. Cations with higher charge have a greater affinity for the negatively charged sites present on the clay mineral. So, cation -A with a charge of +3 is more likely to occupy the anionic sites on the clay mineral.
Answer:
A- beryllium
B- calcium
C- magnesium
Explanation
NOTE: all element in group 2 have 2 balance electrons
First let’s start with B- number of electrons= number of protons which is equal to the atomic number. therefore, the answer is calcium as it’s atomic number is 20
C- magnesium will have three energy levels considering it has 12 electrons (2,8,2).
A- beryllium is the lightest one in group 2 as it has the atomic mass of 9.0122.
Answer:
8 moles of CO
Explanation:
To produce carbon monoxide we begin from C and O₂ as this reaction shows:
2C + O₂ → 2CO
Therefore, 2 moles of C can produce 2 moles of CO
If I have 8 moles of C, I must produce 8 moles of CO
Ratio is 1:1
I’m pretty sure the answer is A.
The correct answer is 1.6 × 10¹⁰ .
The volume of ice chunk can be calculated by using the formula length × breadth × height
The length of the ice chunk given is 98 m, the breadth of the ice chunk given is 25 m and the thickness of the ice chunk given is 750 m,
= 98 × 25 × 750 × 0.000189
= 347.9 m³
= 3.831 × 10¹⁴ gal
Water in swimming pool is 24000 gal
Therefore, number of pools that can be filled = 3.831 × 10¹⁴ / 24000
= 1.596 × 10¹⁰
= 1.6 × 10¹⁰
