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.
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Answer:
It's 5 mark as brainliest answer
Jupiter Saturn Mars Earth Sun
Answer:
Atom 3
Explanation:
Protons have a +1 charge, electrons have a -1 charge, and neutrons have no charge and are therefore neutral. The charges will cancel each other when equal. To determine which atom has the a -1 charge, find the atom that has one more electron than it has protons.
The volume (in mL) of the 1.00 M LiOH needed to prepare 500.00 mL of 0.075 M of LiOH is 37.5 mL
<h3>How do I determine the volume (in mL) of LiOH needed?</h3>
Dilution formula is given as follow:
M₁V₁ = M₂V₂
Where
- M₁ is the molarity of stock solution
- V₁ is the volume of stock solution
- M₂ is the molarity of diluted solution
- V₂ is the volume of diluted solution
Applying the above formula, we obtain the volume (in mL) of LiOH needed to prepare 500.00 mL of 0.075 M of LiOH. This is illustrated below:
- Molarity of stock solution of LiOH (M₁) = 1.00 M
- Volume of diluted solution of LiOH (V₂) = 500.00 mL
- Molarity of diluted solution of LiOH (M₂) = 0.075 M
- Volume of stock solution of LiOH needed (V₁) =?
M₁V₁ = M₂V₂
1 × V₁ = 0.075 × 500
V₁ = 37.5 mL
Thus, the volume (in mL) of LiOH needed is 37.5 mL
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