Energy were released from the walnut, q = 1,673.6 J
<h3>Equation :</h3>
To find the energy using formula,
q = mcΔt
where,
q is charge
m is mass
c is specific heat of water
Δt is change in temperature
So, given
t₁ = 50°C
t₂ = 60°C
m = 40g
c = 4.184 J/g
Now putting the values known,
We get,
q = mc(t₂ - t₁)
q = 40g x 4.184 J/g x (60 - 50)
q = 167.36 J x 10
q = 1,673.6 J
<h3>What is heat energy?</h3>
Heat is the thermal energy that is transferred when two systems with different surface temperatures come into contact. Heat is denoted by the letters q or Q and is measured in Joules.
To know more about specific heat :
brainly.com/question/11297584
#SPJ9
Answer:
grubhub perks gives you deals on the food you love
Explanation:
First you have to calculate how many mols of NaOH are in the 25.0 cm3. As one dm3 is equal to 10cm*10cm*10cm=1000 cm3, there are 0.0016 mol/cm3 and therefore 25cm3*0.0016 mol/cm3=0.04 mol NaOH.
According to the stochiometrics of the reaction a maximum yield of 0.5*0.04=0.02 mol Na2SO4 can be formed. Multiplying by the molar mass gives the mass: 0.02mol*142.04g/mol=2.84 g
<span>Carboxylic acid.
This is because there is no reducing termini. and if one end is a methyl, that is just hydrocarbons, and the rest must also be hydrocarbons. We can assume that there are no other constituents that are making functional groups and given with what we have this is a carboxylic acid.</span>
Answer:
D
Explanation:
Both images have 4 protons (positive particles) and 4 electrons (negative particles) so in total they don't have a charge. (<em>you don't have to worry about neutrons in this case, because they don't have a charge.)</em>
An ion has a charge so neither image is an ion