(Please help 15 points the assignment is late) (multiple questions) (everything is virtual task )
Part 1 What do you think will happen when an effervescent tablet is placed in the water under each inverted glass?
Part 2 Note the changes in the water level and the air space in both glasses, and write down your observations.
Part 3 Did your prediction match your observation?
Part 4. When a substance easily dissolves in a liquid, it has high solubility in that liquid. When a substance does not easily dissolve in a liquid, it has low solubility in that liquid. Solubility of a gas in water describes how well the liquid can “hang on” to gas, instead of releasing it into the air. Based on the results of your experiment, do you think that CO2 has a higher solubility in hot water or cold water? Why?
Part 5 Soda pop is carbonated with CO2. Mark puts one bottle of soda pop in the refrigerator and leaves the other out in the hot sunlight. After one hour, he opens both bottles. Which bottle will likely have more fizzing and bubbles? Why?
Part 6 One result of climate change is that ocean temperatures are increasing. If the temperatures continue to rise, what effect will that have on the oceans’ ability to retain CO2? How might this change affect the atmosphere?
Answers
The dissolution of gases in water is exothermic therefore oceans will dissolve less CO2 as their temperatures rise.
What is effervescence?
The term effervescence refers to the rise of a gas in a system or simply put, it is the evolution of gas. When an effervescent tablet is placed in the water under each inverted glass, a gas will rise in each glass.
The air space in the hot glass is greater than the air space in the cold glass We can see that the gas has a lower solubility in hot water than in cold water. This is because, solubility of gases is exothermic.
The bottle that is left in the hot sun will have more fizzing because the CO2 does not dissolve owing to the higher temperature.
The rise in ocean temperature means that the oceans will dissolve less CO2 in the future and reduce the CO2 holding capacity of the oceans.
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Related Questions
3.4
Why is this cocktail not the perfect medication to treat infections by these
bacteria?
Answers
Answer:
many bacteria are resistant to penicillin and other β-lactam antibiotics - some bacteria have beta-lactamase enzymes and are able to break down the antibiotics - as a result, many drugs are combined with other drugs that are β-lactamase inhibitors.
Explanation:
Quizlet
Convert 5 pounds to kilograms
Help me pleaseeee
Answers
Answer:
2.268
Explanation:
5 lb × 0.45359237 = 2.26796185 kg
How to convert Pounds to Kilograms
1 pound (lb) is equal to 0.45359237 kilograms (kg).
1 lb = 0.45359237 kg
The mass m in kilograms (kg) is equal to the mass m in pounds (lb) times 0.45359237:
m(kg) = m(lb) × 0.45359237
Example
Convert 5 lb to kilograms:
m(kg) = 5 lb × 0.45359237 = 2.268 kg
Hope this helped!!!
Answer:
2.26796 kg
Explanation:
34.56 + 42.235 x 0.0123 – 0.001
with correct sig figs
Answers
Answer: 35.078 to 3 significant figures
Explanation:
Solving;
34.56 + 42.235 * 0.0123 - 0.001
We solve the multiplication first according to the BODMAS rule.
So,
42.235 * 0.0123 = 0.51949
Doing the addition,
34.56 + 0.51949 - 0.001
This gives;
35.079 - 0.001
And finally the subtraction gives;
= 35.078
What do these two changes have in common? snails growing shells a slice of banana turning brown
Answers
Answer:
both are done due to the enviroment??
Pls someone help me hurry pls someone?????
Answers
Answer:
Becxause there is no whee5r else for the flame to go out fromk
Explanation:
NaCl
Na = 1
Cl=1
Answer:
19. because fire needs oxygen or air to keep the fire burning.
20.A molecule of sodium chloride, NaCl, consists of one atom each of sodium and chlorine. Hence, each molecule of NaCl has 2 atoms total. Similarly, we can calculate the total number of atoms in 1 mole of sodium chloride. Since 1 molecule contains 1 atom each of Na and Cl, 1 mole of NaCl will contain 1 mole each of Na and Cl.
Explanation:
Hope this helps!
Predict the electron pair geometry and the molecular structure of each of the following molecules or ions: (a) ClNO (N is the central atom); Determine: electron-pair geometry ; molecular structure ; (b) CS2; Determine: electron-pair geometry ; molecular structure ; (c) Cl2CO (C is the central atom); Determine: electron-pair geometry ; molecular structure ; (d) Cl2SO (S is the central atom); Determine: electron-pair geometry ; molecular structure ; (e) SO2F2 (S is the central atom); Determine: electron-pair geometry ; molecular structure ; (f) XeO2F2 (Xe is the central atom); Determine: electron-pair geometry ; molecular structure ; (g) ClOF2 (Cl is the central atom); Determine: electron-pair geometry ; molecular structure ;
Answers
Answer:
See explanation
Explanation:
In ClNO , nitrogen is the central atom here. The central atom has a tetrahedral electron pair geometry and a lone pair on the nitrogen atom. Due to the lone pair, the electron pair geometry is now trigonal pyramidal.
The molecule CS2 has a linear molecular geometry. There are four electron groups around the central atom hence the electron pair geometry is tetrahedral but the molecular geometry results from the repulsion of the two double bonds.
The electron domain geometry for Cl2CO is tetrahedral since there are four electron pairs around the central atom. However, the molecular geometry is trigonal planar due to the sp2 hybridization of the central carbon atom.
The electron domain geometry of Cl2SO is tetrahedral due to the four electron pairs around the central atom. However, due to the lone pair on sulphur, the molecular geometry is triagonal pyramidal.
In SO2F2, sulphur the central atom is surrounded by four electron pairs which are all bonding groups hence both the molecular geometry and the electron pair geometry is tetrahedral.
In XeO2F2, the central atom is Xe. There are five electron pairs around the Xe central atom four of which are bonding groups. The electron domain geometry and molecular geometry is trigonal bipyramidal.
For ClOF2 , the central atom Cl is surrounded by four electron pairs hence the electron pair geometry is tetrahedral but it is an AX3E(three bonding groups and one lone pair are present in the structure) specie hence it is trigonal pyramidal.
Why is it dangerous to have electric appliances near you when you are taking a bath?
Answers
Answer:
Because water conducts electricity, so if an electrical current were to meet the water while you're in there taking a bath, you would essentially be surrounded by a huge conductor.
Lymph nodes are...
A. bean shaped.
B. circular.
C. carrot shaped.
D. asparagus shaped.
Answers
Answer:
a
Explanation:
Which is a characteristic of a physical change?
a
The chemical bonds in the substance are unchanged.
b
The change cannot be seen.
c
The molecules all move at the same speed.
d
The substance has reacted with another substance.
Answers
a sample of gas at 25.0 c has a volume of 11.0 L and exerts a pressure of 660.0 mmHg. how many moles of gas are in the sample
Answers
Answer: 0.391
Explanation:
Ideal gas law is valid only for ideal gas not for vanderwaal gas. Therefore, 0.38moles of gas are in the sample. Ideal gas is a hypothetical gas.
What is ideal gas equation?Ideal gas equation is the mathematical expression that relates pressure volume and temperature. There is no force of attraction between the particles.
Mathematically the relation between Pressure, volume and temperature can be given as
PV=nRT
where,
P = pressure of gas sample = 660.0mmHg=0.86atm
V= volume of gas sample =11.0 L
n =number of moles of gas sample=?
T =temperature of gas =298K
R = Gas constant = 0.0821 L.atm/K.mol
Substituting all the given values, we get
0.86atm×11.0 L =n× 0.0821×298
On calculation we get
9.46=n×24.4
number of moles of sample=0.38moles
Therefore, 0.38moles of gas are in the sample.
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I need help I don’t really get what I have to do to get the answer
Answers
So, for question 2, we see the term “produces.” There is one substance that precedes that term—potassium chlorate, which would be our sole reactant. And there are two substances that follow that term—potassium chloride and oxygen gas, which would be our two products.
In question 3, we see the term “yields” preceded by ammonium nitrate—our sole reactant—and followed by nitrogen gas, oxygen gas, and water vapor—our three products.
Lastly, in question 4, we see the explicit term “produces.” Moreover, we are told directly that dinitrogen tetrahydride reacts with oxygen gas; it should be pretty clear that these two substances are our two reactants here. The substances that we are told are produced are nitrogen gas and water, which would be our two products.
what is the energy that can transform from one thing to another
Answers
Answer:
Energía geotérmica (calor → energía eléctrica) Motores térmico, como el motor de combustión interna utilizado en automóviles o el motor de vapor (calor → energía mecánica) Energía térmica oceánica (calor → energía eléctrica) Represas hidroeléctricas (energía potencial gravitacional → energía eléctrica)
Explanation:
Answer:
One type of energy can change into another type of energy. Energy transformation means the changing of energy from one type to another, e.g. from kinetic energy to electrical energy, or from potential energy to kinetic energy.
Explanation:
how do you think petals protect the internal structures of a plant?
Answers
Answer:
hmm that is a very tricky question. probably from over flooding with water
1. Why is the timing of tides predictable?
A. because winds are predictable
B. because the moon’s path is predictable
C. because ocean water density is predictable
D. because the sun’s movements are predictable
Answers
Answer:
Because the moon's path is predictable
Explanation:
The moon affects the tides
Which organisms are decomposers?
Select all correct answers.
mushrooms
snake
bacteria
grass
mold
Answers
bacteria
mold
Answer:
mushrooms bacteria mold
Explanation:
A bow and arrow that was just pulled back but not yet released has
energy.
А
potential
B
electrical
С
geothermal
nuclear
Answers
Answer:
A potential
Explanation:
potential energy is a kind of energy which rest or stays in one position
The objects rest on a position has a potential energy. The bow and arrow that was just pulled back but not yet released has energy has potential energy.
What is potential energy ?The potential energy of an object is generated by virtue of its position at height above the surface. It is the stored form of energy when the object is at rest. Whereas, kinetic energy of an object is generated by virtue of its motion.
When the object starts to move with a speed, its potential energy starts to convert into kinetic energy. Both are dependent on the mass of the object. And these energies are directly proportional to the mass.
Here, the bow and arrow are not moving with a speed they just pulled and stay on a position, so they don't have a net kinetic energy but they possess a potential energy. Hence, option A is correct.
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Our body is also a good conductor
of electricity because of the
presence of ______.
Please answer it this is my last question on my test i'll give you 20 points to answer?
Answers
What are three main ocean currents?
Answers
does anyone wanna help me with my question for chemistry [i'll comment the question to you lol someone keeps sending links into my questions]
Answers
Answer:
same I was looking for a question like this I was asking question and someone kept commenting this bitly thing i dont kno I though it was just weird and frustrating lol
Use the following words to fill in the text (can be used more than once).
Anode,Anode to cathode,Battery,Cathode,Chemical to electrical,Electrical to chemical,Electrolysis,Electroplating,Endothermic,Exothermic,N/A
Negative,No,Non-Spontaneous,Oxidation,Positive,Reduction,Spontaneous,Yes.
Answers
Answer:
VOLTIC CELL
Battery
Electrical to chemical
Endothermic
Electrolysis
Chemical to electrical
Anode
Anode to cathode
Battery
Endothermic
Negative
Enthomeric
Reduction
Oxidation
ELECTRYOTIC CELL
No
Non spontaneous
positive
negative
yes
Anode
Electrical to chemical
Anode to cathode
Exothermic
positive
oxidation
Electroplating
Chemical to electrical
6. List two (2) ethical issues that the healthcare provider has a public duty to report.
Answers
Answer: Communicable diseases, abuse gunshot wounds and forensic medicine
Explanation:
The particles of a substance lose energy and change from
a disordered structure with large distances between the particles to
a loosely ordered state.
Which change of state is described?
Answers
Answer:
A Liquid
Explanation:
structure with large distance (gas) than goes to a loosely ordered state (liquid)
I hope this helps
A voltaic cell with a basic aqueous electrolyte is based on the oxidation of Cd(s) to Cd(OH)2(s) and the reduction of MnO4–(aq) to MnO2(s).
Answers
Answer:
See explanation
Explanation:
Oxidation half equation;
3Cd(s) + 6OH^-(aq) ------> 3Cd(OH)2(s) + 6e
Reduction half equation;
2MnO4^-(aq) + 8H^-(aq) + 6e --------> 2MnO2(s) + 4H2O(l)
Balanced reaction equation;
3Cd(s) + 6OH^-(aq) + 2MnO4^-(aq) + 8H^-(aq) ------> 3Cd(OH)2(s) + 2MnO2(s)
Number of electrons transferred = 6
If you were traveling from Earth to Neptune in a spaceship, what would
you see between Mars and Jupiter?
Imposters
little green men
Pluto
the asteroid belt
Answers
Answer:
I believe it would be Asteroid Belt
Explanation:
little green men and imposters seem very unlikely, and Pluto is definetely not between earth and Jupiter
Answer:
the asteroid belt
Explanation:
it orbits between mars and jupiter
What is responsible for moving the water to the ground?
Answers
Answer:
Water applied to the surface of a relatively dry soil infiltrates quickly due to the affinity of the soil particles for water. As time passes and the soil becomes wet, the force of gravity becomes the dominant force causing water to move.
Explanation:
Answer:
Gravity
Explanation:
Water applied to the surface of a relatively dry soil infiltrates quickly due to the affinity of the soil particles for water. As time passes and the soil becomes wet, the force of gravity becomes the dominant force causing water to move.
26) Is the constant speed that a falling object eventually reaches when air 3 points
resistance builds up and prevents further acceleration *
Speed of Gravity
Terminal Velocity
Acceleration
Drag speed
Answers
Answer:
terminal velcity
Explanation:
Mg(s) + HCl (l) --> H2 (g) +MgCl2 (s) A student conducted an experiment with 2g of magnesium and 3 mL of 6M hydrochloric acid. Equal volumes (3mL) of hydrochloric acid and magnesium strips (2g) were put into each tube. What are the reactants in this reaction?
Answers
Answer: Do you have an image so I can solve it?
What does the first ionization energy represent?
Answers
When the water inside a living cell freezes, the ice crystals damage the cell. The wood frog is a unique creature that can survive being frozen. In extremely cold
conditions, the frogs liver produces large amounts of glucose (C6H12O6), which becomes concentrated in the frog's cells. How does the glucose help prevent ice
from forming in the frogs cells?
A)The added glucose dissociates and creates faster moving molecules.
B) The added glucose lowers the vapor pressure relative to the pure solvent.
C) The added glucose requires more energy which warms the frog
D)The added glucose lowers the freezing point of the solution within the frog's cells.
Answers
Which of these are animal adaptations that help animals live in the deciduous forest biome? Select all that apply.
little feet for snow
hibernation
hard outer skin to reduce loss of water
round builds
Answers
Answer:
hibernation
hard outer skin to reduce loss of water
Explanation:
I got a few potins for this, but...yeah.
Adaptations that help animals live in the deciduous forest biome hibernation and hard outer skin to reduce loss of water.
What is deciduous forest biomes?A deciduous forest is a type of forest which is dominatred by the trees that lose their leaves seasonally or in the growing season and Earth has dry forests.
Hibernation is a process in which plants or animals adapt themselves in order to survive in the adverse condition to conserve energy. At the same time animals will try to hard their outer skin to reduce the loss of water in the summer season.
Hence correct options are (2) & (3).
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