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
Mashutka [201]
1 year ago
8

The lab procedure involves several factors, listed below. Some were variable and some were constant. Label each factor below V f

or variable or C for constant.
__ mass of the water in the calorimeter
__ mass of the metal
__change in temperature of the water
__change in temperature of the metal
__volume of water in calorimeter
__calorimeter pressure
__specific heat of water
Chemistry
2 answers:
Mariulka [41]1 year ago
8 0

Answer :

V - mass of the water in the calorimeter

V - mass of the metal

V - change in temperature of the water

V - change in temperature of the metal

C - volume of water in calorimeter

C - calorimeter pressure

C - specific heat of water

Explanation :

Variables : It is a factor that changes during the experiment or calculation.

Constant : It is a factor that does not change during the experiment or calculation.

In a calorimeter, the heat absorbed is equal to the heat released.

Q_{absorbed}=Q_{released}

As we know that,  

Q=m\times c\times \Delta T

m_1\times c_1\times \Delta T_1=-[m_2\times c_2\times \Delta T_2]

where,

m_1 = mass of water in calorimeter

m_2 = mass of metal

\Delta T_1 = change in temperature of the water

\Delta T_2 = change in temperature of the metal

c_1 = specific heat of water

c_2 = specific heat of metal

From this, we conclude that the value of specific heat of water is constant while the other are variables.

The volume of water in calorimeter, calorimeter pressure is also constant.

Lesechka [4]1 year ago
7 0

Answer:

v   -  mass of the water in the calorimeter

v   -  mass of the metal

v   -  change in temperature of the water

v  -   change in temperature of the metal

c  -    volume of water in calorimeter

c   -   calorimeter pressure

c  -   specific heat of water

Explanation:

just did it on edge

You might be interested in
A gas that has a volume of 28 liters, a temperature of 45C, And an unknown pressure has its volume increased to 34 liters and it
patriot [66]

Answer:

P1 = 2.5ATM

Explanation:

V1 = 28L

T1 = 45°C = (45 + 273.15)K = 318.15K

V2 = 34L

T2 = 35°C = (35 + 273.15)K = 308.15K

P1 = ?

P2 = 2ATM

applying combined gas equation,

P1V1 / T1 = P2V2 / T2

P1*V1*T2 = P2*V2*T1

Solving for P1

P1 = P2*V2*T1 / V1*T2

P1 = (2.0 * 34 * 318.15) / (28 * 308.15)

P1 = 21634.2 / 8628.2

P1 = 2.5ATM

The initial pressure was 2.5ATM

3 0
1 year ago
Both black and white road surfaces radiate energy. at midnight on a starry night the warmer road surface is the
luda_lava [24]
The black road because during the day it absorbed more radiation than the with one
5 0
1 year ago
Find the molarity of 750 ml solution containing 346 g of potassium nitrate
Zinaida [17]
Given mass of KNO₃=346g
Molar mass of KNO₃=(39.098)+(14)+(15.99*3)=101.068gmol⁻¹
Volume of Solution=750ml=0.75dm³

Molarity=(mass of solute/molar mass of solute)*(1/volume of sol. in dm³)
            =(346/101.068)*(1/0.75)
            =4.56 mol dm⁻³
5 0
2 years ago
A student has two samples of NaCl, each one from a different source. Assume that the only potential contaminant in each sample i
bija089 [108]

Answer:

The correct option is;

A. Which sample has the higher purity

Explanation:

The information given relate to the presence of two samples of NaCl, from different sources

The only potential contaminant in each of the sources = KCl

The content of the sample = NaCl

The molar mass of NaCl = 58.44 g/mol

The molar mass of KCl = 74.5513 g/mol

Let the number of moles of KCl in the sample = X

For a given mass of NaCl, KCl mixture, we have;

The molar mass of potassium = 39.0983 g/mol

The molar mass of chlorine = 35.453 g/mol

The molar mass of sodium ≈ 23 g/mol

Therefore;

Each mole of KCl, will yield 35.453 g/mol per 74.5513 g/mol of KCl

While each mole of NaCl will yield 35.453 g/mol per 58.44 g/mol of NaCl

Therefore, the pure sodium chloride sample will yield more chlorine per unit mass of sample.

As such if the two samples have the same mass, the sample with the contaminant of KCl will yield less mass of chlorine per unit mass of the sample, from which the student will be able to tell the purity of the solution.

The sample with the higher purity will yield  a higher mass chlorine per unit mass of the sample.

6 0
2 years ago
How many miles of Fe2+ ions and MnO4- ions were titrated in each part 1 trial
Fudgin [204]

Answer:

In 1000 ml there is 0.10 moles of Fe 2+

Therefore, in 10 ml there is (0.1/1000)*10= 0.001 mol of Fe2+

mole ratio for rxn Fe2+ : MnO4- is

1 : 2

therefore if 0.001 moles of Fe2+ react then 0.001*2 =0.002 moles of MnO4- react with Fe2+

hence, molarity of MnO4- = (mol*vol)/1000

= 0.002*10.75/1000= 2.15*10-5M

Explanation:

Hope this helps

5 0
2 years ago
Other questions:
  • Which of the following does not describe elements?
    8·2 answers
  • Explain why a propane torch is lit inside a hot air balloon during preflight preparations. Which gas law applies?
    15·2 answers
  • The ideal gas model assumes that ideal gas particles: (select all that apply) take up a lot of volume take up negligible volume
    10·2 answers
  • Balance the following reaction. A coefficient of "1" is understood. Choose option "blank" for the correct answer if the coeffici
    11·2 answers
  • In the redox conversion of Ni2+ to NiO4−, the oxidation number of Ni goes from (−2, 0, +2) to (−1, +1, +7, +9). Recall that the
    12·1 answer
  • Sam buys a package of chips and notices that hydrogenated vegetables oil is one of the ingredients. This ingredient primarily:
    7·1 answer
  • How many degrees of unsaturation are lost or gained in the base-induced transformation from mito-ph to its photoactive ring-open
    15·1 answer
  • Based on the products obtained, rank the functional groups (acetamido, amino, and methoxy) in order of increasing ability to act
    11·1 answer
  • Which of the following equilibrium expressions corresponds to a heterogeneous equilibrium?(a) Kc =[NH4+][OH−][NH3](b) Kc =[H+][C
    12·1 answer
  • 20g of ideal gas contains only atoms of s and o occupies 5.6l at ntp what is the mol wt of gas
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!