Mass of BaO in initial mixture = 3.50g
Explanation:
Let mass of BaO in mixture be x g
mass of MgO in mixture be (6.35 - x) g
Initially CO_2
Volume = 3.50 L
Temp = 303 K
Pressure = 750 torr = 750 / 760 atm
Applying ideal gas equation
PV = nRT
n = PV / RT
(n)_CO_2 = ((750/760)* 3.50) / 0.0821 * 303
(n)_CO_2 = 0.139 mole
Finally; mole of CO_2
n= PV /RT
((245/760) *3.5) / 303* 0.0821
(n)_CO_2 = 0.045 mole
Mole of CO_2 reacted = 0.139 - 0.045
=0.044 mole
BaO + CO_2 BaCO_3
Mgo + CO_2 MgCO_3
moles of CO_2 reacted = ( moles of BaO + moles of MgO)
moles of BaO in mixture = x / 153 mole
moles of MgO in mixture = 6.35 - x mole / 40
Equating,
x/ 153 +6.35/40 = 0.094
= x/153 + 6.35 / 40 - x/40 =0.094
= x (1/40 - 1153) = (6.35/40 - 0.094)
= x * 10.018464
= 0.06475
mass of BaO in mixture = 3.50g
Answer:
The initial temperature of helium was T1 = 232.23 K
Explanation:
Given data:
Initial volume V1 = 5 L
Initial pressure P1 = 699 mmHg
Final pressure P2 = 800 mmHg
Final volume V2 = 5.7 L
Final temperature T2= 303 K
Initial temperature T1 = ?
Solution:
Formula:
P1V1/T1 = P2V2/T2
T1 = T2 × P1V1/P2V2
T1 = 303 K × 699 mmHg × 5 L / 800 mmHg × 5.7 L
T1 = 1058985/ 4560
T1 = 232.23 K
initial temperature of helium was 232.23 k.
Metamorphic rocks were once sedimentary, igneous or even other metamorphic rocks that have been changed by heat and pressure. so i think this will help you.
Answer:
Because of the existence of isotopes.
Answer:
c) They come from polyunsaturated fats.
a) You must get them from food sources.
Explanation:
Polyunsaturated fatty acids are essential fatty acids. Omega-3 and omega-6 are the two types of important fatty acids. Saturated fatty acids, like all other fats, play a crucial function in the body. The most important fats, on the other hand, are those that the body cannot produce and must therefore be obtained from diet. These EFAs are made up of linoleic acid (omega-6 group) and alpha-linolenic acid (omega-3 group) (omega-3 group). Both categories of essential fatty acids are required for survival. EFA insufficiency is frequent in the general population for a variety of causes, as is a disproportionate intake of omega-6 fatty acids compared to omega-3 fatty acids. As a result, eating the correct meals is critical to ensuring that you get enough and the right kinds of vital fatty acids. But there's a lot more to the story. Increased consumption of certain important fatty acids, alone or in combination with other fats and chemicals, has been proven in studies to enhance health, aid in the treatment of certain disorders, and even improve body composition, mental and physical performance. Most of the lipids required by the human body may be synthesized from other fats or basic materials. Omega-3 fatty acids are an exception (also called omega-3 fats and n-3 fats). These are necessary fats, which the body cannot produce on its own and must obtain from diet.