Answer:
5.645 × 10⁻²³ g
Solution:
Step 1) Calculate Molar Mass of SH₂;
Atomic Mass of Sulfur = 32 g/mol
Atomic Mass of H₂ = 2 g/mol
--------------------
Molecular Mass of SH₂ = 34 g/mol
Step 2: Calculate mass of one molecule of SH₂ as;
As,
Moles = # of Molecules / 6.022 × 10²³
Also, Moles = Mass / M.Mass So,
Mass/M.mass = # of Molecules / 6.022 × 10²³
Solving for Mass,
Mass = # of Molecules × M.mass / 6.022 × 10²³
Putting values,
Mass = (1 Molecule × 34 g.mol⁻¹) ÷ 6.022 × 10²³
Mass = 5.645 × 10⁻²³ g
Answer:
Calcium (Ca²⁺)
Explanation:
Calcium is very important mineral, found in teeth and bones primarily.
It is needed for the strong bones.
It is very important to maintain the bones in order to support our skeleton.
In our body it is also important to carry out other functions like in muscles, nerve function and also for heart.
If our diet is not full of calcium, the calcium deficiency may occur which leads to the weakening of bones and cause fracture.
The dietary source of calcium includes:
Yogurt, cheese, milk
beans such as peas, peanuts.
fishes
almonds, oranges, molasses
Answer: Thats false the Russians were the first
Explanation:
The answer is A i think from the options though the answers are worded a bit weird
Answer:
yes, in certain cases
there are different types of bondings between atoms
and in some they lend electrons to make their atom stable this type of bonding is called ionic bonding
and in covalent bond the atoms share their electrons
