Why does there appear to be another duck head in the water?
A
The water in the pond reflects light from the Sun, making a mirror image
B
The molecules in the atmosphere refract the light, splitting it into two ima
С
The duck scatters the light, making hundreds of tiny refractions that collec
D
The bottom of the pond absorbs the light, then projects it toward the surfa

Answer:

it's A. The water in the pond reflects light from the Sun, making a mirror image

Explanation:

i just took the test

The ground -state electron configuration contains 6p unpaired electrons .

Estimate how much heat in joules is released when 25.0 g of water (C = 4.184 J/g°C) is cooled from 80.0°C to 30.0°C?

Is this answer correct

The pKa of an acid depends partly on its environment. Predict the effect of each of the following environmental changes on the pKa of a glutamic acid side chain. (a) A lysine side chain is brought into proximity. (b) The terminal carboxyl group of the protein is brought into close proximity.

g antimony is used as a catalyst in the production of many plastic polyesters. if the plasticis used as a container, some trace amounts of antimony may diffuse into the interior. whileexperimenting, you determine that 44.7μg/lof antimony is present in a batch of fruit juice.at that rate, how many moles of antimony would you expect to find in a gallon of the juice?note that the molecular mass of antimony is 121.76g/mol

What is a mixture of two insoluble mixtures called​

Which ecosystem is most resilient to change due to its high diversity?
mountain meadow
stormwater pond
coral reef
arctic tundra

The vapor pressure of liquid octane, C8H18, is 40.0 mm Hg at 318 K. A sample of C8H18 is placed in a closed, evacuated container of constant volume at a temperature of 448 K. It is found that all of the C8H18 is in the vapor phase and that the pressure is 71.0 mm Hg. If the temperature in the container is reduced to 318 K, which of the following statements are correct?

a. The pressure in the container will be 42.8 mm Hg.
b. Liquid octane will be present.
c. Only octane vapor will be present.
d. Some of the vapor initially present will condense.
e. No condensation will occur.

ontrast the mechanisms of the following two reactions, the dehydration and condensation of ethanol. Part A The first step of dehydration of ethanol is _______. The first step of condensation of ethanol is ________. The first step of dehydration of ethanol is _______. The first step of condensation of ethanol is ________. protonation, deprotonation protonation, protonation deprotonation, protonation deprotonation, deprotonation Request Answer Part B Dehydration of ethanol is __________, condensation of ethanol is __________. Dehydration of ethanol is __________, condensation of ethanol is __________. a substitution, an elimination an elimination, a substitution a substitution, a substitution an elimination, an elimination Request Answer

If the density of a sample of skim milk is 1.04 g/mL, how many grams are in 0.50 qt of skim milk?

Which of the following molecules is least soluble in water?​

The student recorded the mass of the cup + sample incorrectly and started with 2.20 g of hydrated compound but used 2.00 g in the calculations. Explain how this error will affect the calculation for the number of moles of water in the hydrate? Will the final answer be artificially high or low? How do you know?

A sample of potassium has an average atomic mass of 39.0983amu. There are three isotopic forms of potassium element in the sample. About 93.2581% of the potassium atoms are 38.9637amu mass (39K); 0.0117% are 39.9639amu mass (40K), and the remaining isotope 41K is of 40.9618amu mass. Calculate the percentage composition of 41K. Report your answer with five significant figures.

Two identical spoons are electroplated with Ag or Cd through the use of the electrolytic cells. A current of 5.00A was supplied to each cell for 600. seconds, and the masses of the spoons before and after the electroplating were recorded. Write down the mathematical equations can best be used to account for the much larger increase in mass of the spoon electroplated with Ag compared with the spoon electroplated with Cd.

A) Calculate the vapor pressure of a 7% by mass benzaoic acid in ethanol solution at 30°C. The vapor pressure of pure ethanol at this temperature is 13.40 kPa. ( assume a 100 g of solution)
B) Calculate the boiling point of the solution above

Helpppppp plsssssssss

You have two compounds that you have spotted on a TLC plate. One compound is more polar than the other. You run the TLC plate with neat hexanes and find that only one spot moved a small distance up the plate. Next you made a 50/50 mixture of hexanes and ethyl acetate. What might you expect to see on your TLC plate (what would the spots do)?

Arsenate (AsO43-) is structurally and chemically similar to inorganic phosphate (PO43-), and many enzymes that act on phosphate will also use arsenate as a substrate if it is available. However, unlike phosphates, organic compounds of arsenate are kinetically unstable. For example, acyl phosphates (such as 1,3-bisphosphoglycerate) require an enzyme to catalyze phosphate hydrolysis on a biologically relevant timescale, but acyl arsenates hydrolyze almost instantaneously in water without an enzyme.
a) Predict the effect on the net reaction catalyzed by glyceraldehyde 3-phosphate dehydrogenase if phosphate were replaced by arsenate.
b) Write a balanced overall equation for the conversion of glucose to pyruvate in the presence of ATP, ADP, NAD+, and arsenate.
c) Arsenate is extremely toxic to most organisms. Based on your answers above, explain why.

Please help quickly as possible thank you :) ​

MEDICAL FORENSICS

please help me i only get one chance to do this please

Which phrase describes air density? increases as altitude increases Ο Ο Ο equals mass divided by volume pushes molecules in one direction exerts less pressure as it increases

♡︎PLS HELP IM TIMED PLS WILL GIVE BRAINLIEST!!!♡︎​

I HAVE 25 MINUTES TO FINISH True or false the deeper you go into Earth the temperature goes up ?

PLEASE HELP ME ITS DUE IN 25 MINUTES True or false iron and nickel are less dense than silicates ?

HELPP ASAPP
Select the answer that expresses the result of this calculation with the correct
number of significant figures:
(6.167 + 83.0) / 5.1

A 50.8g sample of glass, which has a specific heat capacity of 0.670·J·g?1°C?1, is put into a calorimeter (see sketch at right) that contains 150.0g of water. The temperature of the water starts off at 22.0°C. When the temperature of the water stops changing it's 25.6°C. The pressure remains constant at 1atm. Calculate the initial temperature of the glass sample. Be sure your answer is rounded to the correct number of significant digits.

which of these would best describe the outcome of increasing the kinetic energy of molecules in the picture above?

The sum of all the potential energy and kinetic energy is an object is equal to its______

due today pls help! :(

Write True if the statement is correct and False if it is incorrect.
1. Mosquitos are flies.
2. All large invertebrates live in the
sea or at least in water.
3. An arthropod is a form of arachnid.
4. The giant squid is the world's largest
invertebrate.
5. Earthworms have skeleton
6. The octopus is the most advance of
the mollusks.
7. Insects are vertebrates animals.
8. Starfish have shells.
9. Snails have spiral protective shell.
10. Ants and termites both live in colonies
with a complex social structure.​

What are the main parts of a simple electrie motor, like the one found inside a remote control car? O a generator, wires, and turbine magnets and coils of wire O electromagnets only​

Read each question carefully, and answer yes or no to each one. At the end of each section, follow the directions to score your answers (pay close attention as the directions for scoring may change for each section). After you complete the entire assessment, total the points from all seven sections. This will give you a total health score. The higher the score, the more healthy your lifestyle. If you feel you have a low score, look back through the assessment and identify areas where you can change your unhealthy habits, and explain what changes you would make and why. Write your assessment in the essay box below.

Section 1: Physical Fitness
Do you exercise or play a sport for at least 30 minutes three or more times a week?
Do you stretching before and after exercising?
Do you warm up before exercising and cool down afterwards?
Do you think that you are at a healthy weight?
Are you mostly happy with the way your body looks and feels?
Do you think you have enough energy?
Give yourself one point for each No response and two points for each Yes response. Section score: ____

Section 2: Family History
Do you have a family member who:

has high blood pressure?
has diabetes?
has heart disease?
has cancer?
is extremely overweight?
Give yourself one point for each Yes response and two points for each No response. Section score: ____

Section 3: Hygiene and Medical Care
Do you floss your teeth every day?
Do you brush your teeth at least twice a day?
Do you visit the dentist at least once a year?
Do you use sunscreen?
Do you know basic first aid?
Are all your immunizations current?
Do you get your vision and hearing checked each year?
Do you see the doctor for a check-up once each year?
Do you feel you get enough sleep at night?
Do you know the warning signs for cancer?
Give yourself one point for each No response and two points for each Yes response. Section score: ____

Section 4: Nutrition
Do you eat a lot of red meat or eggs?
Do you add salt to your food?
Do you add sugar to your food?
Do you eat a lot of high-fat or high-sugar foods?
Do you add butter or cheese to your food?
Do you choose fried foods more often than baked or broiled foods?
Do you drink caffeinated drinks, such as coffee or sodas?
Do you skip meals?
Give yourself one point for each Yes response and two points for each No response. Section score: ____

Section 5: Drug Use
Do you smoke or chew tobacco?
Do you drink alcohol?
Have you ever used marijuana or other illegal drugs?
Have you ever abused a prescription drug?
Give yourself zero points for each Yes response and two points for each No response. Section score: ____

Section 6: Safety
Have you ever ridden with drivers who were under the influence of alcohol or drugs?
Have you ever ridden with drivers who speed or disobey traffic laws?
Do you ever forget to wear your seat belt?
Do you ever forget to wear a helmet when riding a bike or skateboarding?
Do you ever play with matches or hazardous materials?
Is there a gun in your house?
Give yourself zero points for each Yes response and two points for each No response. Section score: ____

Section 7: Emotional and Social Health
Do you have hobbies or activities that you enjoy?
Do you give your best effort when doing your work?
Do you find it easy to laugh?
Do you express anger in an appropriate way?
Do you easily fall asleep at night?
Do you share personal problems with someone you trust?
Do you feel well liked by others?
Do you have someone you can turn to if you need help?
Are your family members and close friends in good health?
Are you generally happy?
Give yourself one point for each No response and two points for each Yes response. Section score: ____

Total Health Score: ____