You need to find the abundance. Then, multiply the abundance by 100, and add that to the mass for each isotope. Basically, for each isotope, take the percentage abundance and add it to the mass. Multiply each calculation of these together to get your average atomic mass,
Answer:
C) Integumentary, nervous, muscular
Explanation:
When a human body touches a hot stove , our sense organ which is integumen first of all receives the impulse of heat . The impulse is transformed into electrical signal which is transmitted to brain which is a part of nervous system . Then brain processes it and command signal is sent to muscle of hand to move it away from that place . Hence the order is
Integumentary, nervous, muscular .
Answer:
The molarity will be "0.43 M" and molality will be "0.43 m".
Explanation:
Given that:
mass of NaCl,
= 25 g
Volume of solution,
= 1 L
Density of solution,
= 1 gm/cm³
Now,
The weight of solvent will be:
= 
= 
= 
The mole of NaCl will be:
= 
= 
= 
hence,
The molarity will be:
= 
= 
= 
The molality will be:
= 
=
= 
Ans: Final volume = 25.0 ml
<u>Given:</u>
Initial volume V1 = 50.0 ml
Initial pressure P1 = 20.0 atm
Final pressure P2 = 40.0 atm
<u>To determine:</u>
The final volume V2
<u>Explanation:</u>
Ideal gas equation: PV = nRT
under constant temperature, T and number of moles n we have:
PV = constant
or, P1V1 = P2V2
V2 = P1V1/P2 = 20*50/40 = 25 ml.
CS₂ reacts with O₂ and forms CO₂ and SO₂ as the products. The balance equation for the reaction is
CS₂ + 3O₂ → CO₂ + 2SO₂
Initial 1.00 mol 1.00 mol
Reacted 1 / 3 mol 1.00 mol
Final 2/3 mol - 1/3 mol 2/3 mol
The stoichiometric ratio between CS₂ and 3O₂ is 1 : 3.
Hence, limiting agent is O₂.
