Answer:
Volume of NaOH reacted = 1.6 L
Explanation:
<u>Given:</u>
Molarity of H2SO4, M1 = 4.0 M
Volume of H2SO4, V1 = 0.6 L
Molarity of NaOH, M2 = 3.0 M
<u>To determine:</u>
Volume of NaOH,V2
<u>Explanation:</u>
The given neutralization reaction is:
Here 2 moles of NaOH reacts with 1 mole of H2SO4
i.e. moles of NaOH = 2(moles of H2SO4)
Since:
Answer:
True
Explanation:
Any substance dissolving a solid (salt) in liquid (water) is a physical change.
Salt in water, is a physical change because only the state of the matter has changed.
Answer:
Elements in group I have one valency electron.
Answer:
2621.75 j heat is required to increase the temperature 25.5°C to 46°C.
Explanation:
Given data:
Mass of sample = 142.1 g
Initial temperature = 25.5°C
Final temperature = 46°C
Specific heat capacity of Al = 0.90 J/g.°C
Solution:
Formula:
Q = m.c. ΔT
Q = amount of heat absorbed or released
m = mass of given substance
c = specific heat capacity of substance
ΔT = change in temperature
ΔT = 46°C - 25.5°C
ΔT = 20.5°C
Q = 142.1 × 0.90 J/g.°C × 20.5°C
Q = 2621.75 j
Thus, 2621.75 j heat is required to increase the temperature 25.5°C to 46°C.