Answer:
660J/kg.°C
Explanation:
Using the fact that
∆E of metal + ∆E of water = 0
∆E of the metal = Q = m*c*(T2-T1)
Where
Q = heat lost or gained = ?
m = mass of metal in kg = 0.076kg
c = specific heat of the metal = ?
T1 = 96°C
T2=31°C
∆E of the water=Q= m*c*(T2-T1)
Where
Q = 0.120*4180*6.5 = 3260J
Therefore
3,260J + Q of the metal =0
3,260J + 0.076*C*(31.0–96.0)=0
3,260J - 4.94c = 0
3,260 = 4.94c
3,260/4.94 = c
660J/kg.°C = specific heat of the metal
hope this helps:)
Step by step solution: The position of hydrogen is controversial in the periodic table because hydrogen is the only element without neutrons. Hydrogen is a nonmetal and is placed above the group in the periodic table because it has ns1 electron configuration like the alkali metals.
Answer:
787.5 grams of glucose (C₆H₁₂O₆) can prepare 1750 mL of a 2.50 M solution
Explanation:
Molarity (M) is a concentration measure that indicates the number of moles of solute that are dissolved in a given volume.
Molarity is expressed in the following way:
Molarity is expressed in units .
2.50 M means that in 1 L of solution there are 2.5 moles of glucose. So, you apply a rule of three as follows: if in 1 L there are 2.5 moles of glucose, in 1.75 L (1750 mL, being 1000 mL = 1 L) how many moles of the compound are there?
moles=4.375
Being:
- C: 12 g/mole
- H: 1 g/mole
- O: 16 g/mole
The molar mass of glucose is:
C₆H₁₂O₆= 6* 12 g/mole+ 12* 1 g/mole + 6* 16 g/mole
C₆H₁₂O₆= 180 g/mole
Then you can apply a rule of three as follows, knowing the moles in 1750 mL and the molar mass: if there are 180 g of glucose in 1 mole, how much mass is there in 4.375 moles?
mass= 787.5 g
<u><em>787.5 grams of glucose (C₆H₁₂O₆) can prepare 1750 mL of a 2.50 M solution</em></u>
The carbon atom reduced in the transformation of chloromethane to methyllithium.
The reaction between chloromethane and lithium form methyllithium.
→
In above reaction, methyllithium is formed by the dispersing of lithium metal and adding chloromethane .
The carbon atom in chloromethane is partial positive charge because chlorine is high electronegative atom. The carbon atom in methyllithium is partial negative charge because carbon is more electronegative than lithium.
So, in above reaction two lithium metal donate two electron ( each lithium donate one electron) to the carbon atom(having positive charge) of chloromethane and get negative charge in methyllithium .
The gain of electron is reduction. So,The carbon atom reduced in the transformation of chloromethane to methyllithium.
learn about methyllithium
brainly.com/question/15215326
#SPJ4
Without the technology the humankind would have not been so advanced. as without technology our daily life is incomplete now. for example if we need to talk to someone who is not near us we use mobile phone if they would have not existed we might have not been able to contact to a person far away.