answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Digiron [165]
2 years ago
10

25. In the investigation shown the changes in heat of the copper is greater than the change in the heat of the water. What error

could account for this apparent violation of the law of conservation of energy?
Chemistry
1 answer:
forsale [732]2 years ago
3 0

Answer:

Heat lost to the surroundings

Heat lost to the thermometer

Explanation:

All changes in heat, or energy, can be explained. Many of the reactions or changes we see in the world involve the conversion of energy. For example as we heat up a substance (eg. water), the amount of energy we put in should give us an exact temperature. However, this is a "perfect world" scenario, and does not occur in real life. Whenever heat is added to a substance like water, we always need to account for the energy that is going to be lost. For example, heat lost to evaporation or even the effect of measuring the temperature with a thermometer (the introduction of anything including a thermometer will affect the temperature).

You might be interested in
A chemical manufacturer sells sulfuric acid in bulk at a price of $100 per unit. If the daily production cost in dollars for x u
sleet_krkn [62]

to solve the amount of sulfuric acid to maximize the profit we need to establish the profit

let S(x) = 100x the selling price

P = S(x) – C(x)

P = 100x – ( 100,000 + 50x + 0.0025x^2)

P = 50x – 100000 – 0.0025x^2

Getting the first derivative and equating it to 0

0 = 50 – 0.005x

X = 10000 units of sulfuric acid

But the capacity is only 7000 units

<span>So 7000 units should be manufactured</span>

3 0
2 years ago
7. How many moles of argon are there in 20.0 L, at 25 degrees Celsius and 96.8 kPa?
suter [353]
<h3>Answer:</h3>

              0.8133 mol

<h3>Solution:</h3>

Data Given:

                 Moles  =  n  =  ??

                 Temperature  =  T  =  25 °C + 273.15  =  298.15 K

                  Pressure  =  P  =  96.8 kPa  =  0.955 atm

                  Volume  =  V  =  20.0 L

Formula Used:

Let's assume that the Argon gas is acting as an Ideal gas, then according to Ideal Gas Equation,

                  P V  =  n R T

where;  R  =  Universal Gas Constant  =  0.082057 atm.L.mol⁻¹.K⁻¹

Solving Equation for n,

                  n  =  P V / R T

Putting Values,

                  n  =  (0.955 atm × 20.0 L) ÷ (0.082057 atm.L.mol⁻¹.K⁻¹ × 298.15 K)

                 n  =  0.8133 mol

4 0
2 years ago
Read 2 more answers
A blue circle labeled proton and A overlaps a pink circle labeled electron and C. The overlap is labeled B. The Venn diagram com
Sedaia [141]

Answer: The answer would be, "Has mass of 1 amu".

Explanation:

8 0
2 years ago
Read 2 more answers
Which of the following is a reasonable ground-state electron configuration?
Veronika [31]

Answer is: 1s22s22p5.

1) Electron configuration 1s²1p⁶2d², this is not reasonable because 1p and 2d oritals do not exist.

2) Electron configuration 1s²2s⁴2p⁶, this is not reasonable because s orbitals only contain 2 electrons.

3) Electron configuration 1s²2s²2p⁵ is of an element fluorine. Fluorine (F) has atomic number 9, which means it has 9 protons and 9 electrons.

4) Electron configuration 1s²2s²2d⁶, this is not reasonable because 2d orbitals do not exist.

8 0
2 years ago
Read 2 more answers
1. What are small-scale techniques in chemistry? <br>​
stira [4]

Answer:Small-scale technique means a small quantity of chemicals that contribute to the safety of the experiments. Instead of using big beaker of chemical, micro scale technique utilize small quantities of chemical and scaled-down science equipment.

Explanation:

4 0
2 years ago
Other questions:
  • What is the name of a hydrocarbon that has the formula CH3(CH2)4CCH?
    11·1 answer
  • What is the bond energy per mole for breaking all the bonds of oxygen, O 2 ?
    6·1 answer
  • Water is sometimes removed from the products of a reaction by placing the products in a closed container with excess P4O10. Wate
    9·2 answers
  • dentify salts that will dissolve to give an acidic solution. (Select all that apply.) LiCl C6H5NH3Cl NaNO2 CH3NH3Br CH3COONa KCl
    9·1 answer
  • What is the concentration of a solution made with 0.150 moles of KOH in 400.0 mL of solution?
    14·1 answer
  • Which of the following organisms are carnivores?
    12·1 answer
  • 1) Aluminum sulphate can be made by the following reaction: 2AlCl3(aq) + 3H2SO4(aq) Al2(SO4)3(aq) + 6 HCl(aq) It is quite solubl
    12·1 answer
  • A pure sample of bromine was vaporized and injected into a mass spectrometer and the data was plotted on the graph below. The ma
    12·1 answer
  • Which statements is true about electrons in their energy levels
    6·1 answer
  • A change in the state of matter is caused if enough _____ is added to or removed from an object.​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!