Vanadium metal has a molar heat capacity of 24.9 j/mol·k. given that q = cm × n × δt, how many moles of vanadium are present if 3.27 ✕ 103 j of heat is required to raise the temperature of the sample by 36.7 k?

number of  moles present is 3.58 mol

Explanation:

given data

molar heat capacity C m= 24.9 J/mol·K

q = Cm × n × ΔT

heat require q =  3.27 × 10³ J

temperature ΔT = 36.7 K

to find out

number of  moles ( n )

solution

we have given equation

q = Cm × n × ΔT   1

put here all these value to find n by equation 1

q = Cm × n × ΔT

3.27 × 10³ = 24.9× n × 36.7

n = 3.27 × 10³ /  ( 24.9× 36.7 )

n  = 3.5783

so number of  moles present is 3.58 mol

according to jean piaget, in what stage of cognitive development are children able to understand conservation task?

b. preoperational

just took it