Answers
Related Questions
_Au2S3 + _H2---> _Au + _H2S
Question 3 options:
A- 1, 3, 2, 3
B- 1, 2, 4, 2
C- 1,3,1,2
D- 2, 1, 1, 3
Answers
Au=2
S=3
H=6
It has to equal to the product so then you put in the last two numbers 2 and 3
Au=2
S=3
H=6
IF YOU GIVE A LINK OR DON"T ACTUALLY ANSWER THIS QUESTION RIGHT JUST FOR POINTS I WILL REPORT YOUR ANSWER AND YOU
On the way to school, Ellie sat on a bench waiting for her friend. She noticed snow all around her. Later that day, Ellie and her friend walked home and passed the same bench. Ellie's friend said, “There is a puddle in front of the bench. It must have rained while we were in school, creating this puddle.”
Ellie disagreed. She had a different claim about how the puddle formed based on the evidence from her observations. Ellie's evidence was as follows:
The park was covered in snow that morning but not in the afternoon.
Ellie didn’t need her jacket on the way home because it was so warm.
It was sunny all day.
Do you think the puddle was formed from rain? Why or why not?
Answers
Answer:
No, the puddle was formed because of the sun, because if there was snow and it rained then it would have turned slippery or icy
Explanation: If Ellie didn’t need a jacket but there was still some snow that means that it snowed the night before and melted today because the temperature became higher not because it rained
NNNOOOOOOOOOO LLLIIIINNNKKKKKKKKSSSSSSS Plastic takes more than ________ years to degrade.
A. 450 years
B. 300 years
C. 350 years
D. 400 years
Answers
Explanation:
The right option should be a
Please help urgent !!! How does an instant cold pack get cold so quickly?
Answers
Answer:
When the inner bag of water is broken by squeezing the package, it dissolves the solid in an endothermic reaction. This reaction absorbs heat from the surroundings, quickly lowering the pack's temperature.
Explanation:
Uh, yea.
Have a good day!
The noble gases are unreactive and stable. Which of the following explains why this is true?
They have 8 electrons in their outer shell (except for Helium).
They exist on their own without other elements.
They have more electrons than other elements.
They each have no electrons.
EXPLAIN
Answers
Answer:
The answer is A. They have 8 electrons in their outer shell (except for Helium).
Explanation: This is because of the number of valence electrons( the amount of electrons in their outer shell). For a reaction to take place, a transfer of electrons must take place. If their outer shell is already full, they don't have any tendencies to react.
Noble gases are unreactive gases and are stable. This is because they have complete octet or eight electrons in their outer shells. Thus, option A is accurate.
What are noble gases?Noble gases are the gases of the periodic table that do not show any reaction with other elements and have great stability and low reaction rates.
They are special as their outermost orbit is completely filled to complete their octet rule so they lack any free electron to take part in a chemical reaction.
Therefore, option A. noble gases have eight electrons in their outermost shell.
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Choose any electromagnetic wave we have discussed and write ONE PARAGRAPH telling me about the uses/benefits of that electromagnetic wave.
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The arrangement of things in the order that they occurred.
A. Extinction
B. chronological order
Science (Ignore chemistry subject pls)
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Plz help urgent!!
What happens to the atoms of the fuel As it burns?
Answers
Answer:
When things burn, it looks like they are destroyed, but during any chemical reaction no particles are created or destroyed. The atoms in fuels are simply rearranged from the reactants to the products during combustion.
Explanation:
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:)))))))))))))
Answer:
More atoms released from the fuel combine with nearby oxygen. That releases more energy, which releases more atoms. This heats the oxygen — and so on. The orange and yellow colors in a flame appear when extra, free-floating carbon atoms get hot and begin to glow.Which human body system creates the force that allows the body to move?
A.
musculoskeletal system
B.
nervous system
C.
respiratory system
D.
circulatory system
Answers
Low-pressure air is associated with which of the following?
a. Cold, Dry, High Density, Good Weather
b. Warm, Moist, Humid, Low Density, Good Weather
c. Cold, Dry, High Density, Bad Weather
d. Warm, Moist, Humid, Low Density, Bad Weather
Answers
Warm, humid, low density, good weather
Order the following from smallest to largest. Place the smallest value at the top of your list.
0.1km
10cm
10,000mm
1m
Answers
0.1km
10,000 mm
1m
i think
According to unit conversion, the values from smallest to largest are 10 cm, 1m,10,000mm,0.1 km.
What is unit conversion?Unit conversion is defined as a multi-step process which involves multiplication or a division operation by a numerical factor.The process of unit conversion requires selection of appropriate number of significant figures and the rounding off procedure.
It involves a conversion factor which is an expression for expressing the relationship between the two units.A conversion ratio always has value which equals to one which indicates that numerator and denominator have values which are expressed in different units.
It is an easy process which involves unit conversion between the different conversion systems. While unit conversion care needs to be taken regarding accuracy and precision.
As 0.1 km=100 m, 10 cm=0.1 m,10,000 mm=10 m and 1 m. Therefore the values from smallest to largest are 10 cm, 1 m,10,000 mm,0.1 km.
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What properties did you identify when observing the sedimentary rock?
Answers
Answer:
Explanation:
Bedding. Bedding is often the most obvious feature of a sedimentary rock and consists of lines called bedding planes, which mark the boundaries of different layers of sediment. .
Graded beds are common when a sediment is being deposited by a slow‐moving current.
Fossils.
Desiccation cracks and ripple marks.
Sedimentary rocks contain rounded grains in layers. The oldest layers are at the bottom and the youngest layers are at the top. Sedimentary rocks may contain fossils of animals and plants trapped in the sediments as the rock was formed.
The properties you identify when observing is called bedding
Soda Caffeine Experiment
Scientists at a soft drink company want to test the effect of caffeine on heart rates,
They set up 3 groups of 50 people each.
All 150 people have their heart rates recorded before beginning the experiment,
Group 1 is given a non-caffeinated soda to drink.
Group 2 is given a regular caffeinated soda to drink,
Group 3 is given a highly caffeinated soda to drink,
The heart rate is recorded after each group has drank their soda,
What is the independent (or manipulated) variable in this experiment?
A. Amount of caffeine in soda
B. Change in heart rate
C. Amount of sugar in soda
D. Amount of movement by people before heart rate is recorded
Answers
Joey is conducting an experiment in which he measures how far a rubber ball flies when launched at different angles.
Which of the following lab tools will allow Joey to record his results?
A.
a lab journal
B.
a meter stick
C.
a spring scale
D.
a stopwatch
Answers
Answer:
A; lab journal
Explanation:
i just did it
Scientists often repeat experiments multiple times.
Why is this important?
A.
Repeating an experiment helps to verify the results.
B.
Repeating an experiment turns a hypothesis into a theory.
C.
Repeating an experiment gives scientists something to do while they think of new hypotheses.
D.
Repeating an experiment allows scientists to test different variables.
Answers
Answer:
The answer is A.
Explanation:
Scientists repeat the same experiments because they wanna try to see if they keep getting the same result. When a scientific investigation is repeated, this is called replication. Replication is important in science so scientists can “check their work.” The result of an experiment is not likely to be well accepted unless the investigation is repeated many times and the same result is always obtained.
Describe three findings of the Human Genome Project
Write it in your own words
Answers
Answer:
The biggest known human gene, is made up of about 2.4 million bases. The Human Genome Project also gave us more detailed information about chromosomes. It turns out that chromosome 1 contains the most genes, while the Y chromosome has the fewest.
Explanation:
What is one benefit that nuclear power plants currently provide for our environment? O A. They provide energy while increasing natural gas pollution. O B. They provide energy while increasing biomass by-products. O C. They provide energy without increasing carbon dioxide emissions. D. They provide energy without increasing nuclear waste.
Answers
Answer:
C
Explanation:
nuclear power produces no greenhouse gas emissions
Use the chart to answer the following question. I Nuclear energy does not produce dangerous waste products. Nuclear energy is significantly cheaper then production of energy from fossil II fuels. Nuclear energy does not produce greenhouse gases that contribute to global III warming Nuclear energy generates radioactive waste products that can be safely, IV cheaply, and easily stored, Which statements are claims that are supported by accurate evidence related to nuclear power O A. I, II, and III O B. I, III, and IV O C. II, III, and IV O D. I, II, and IV
Answers
Answer:
Nuclear energy is significantly cheaper then production of energy from fossil II fuels
Explanation:
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NO LINK ANSWERS
Which of the following is true of a balanced equation?
1.The kinds of atoms remain the same.
2.The number of atoms per molecule remains the same.
3.The total number of molecules remains the same.
4.The number of atoms of each element remains the same
Answers
Answer:
3
Explanation:
b/c a balanced chemical equation is
Answer:The number of products should be equal to the number of reactants. The properties of products should be the same as the properties of reactants. There must be as equal number of compounds on both sides of the equation. There must be as equal number of atoms of each element on both sides of the equation.
Explanation:
Stars in the sky appear to be moving. What do we call this conclusion that is based on observations, clues, or evidence?(2 points)
A.Hypothesis
B.Inference
C.Procedure
D.Report
Answers
Answer:
B. Inference
Explanation:
I dont have one but when i took a quiz it said it was right
Stars in the sky appear to be moving. We call this conclusion that is based on observations, clues, or evidence is Inference.
What is inference?An inference is a conclusion that we can make when we have seen evidences of some particular situations and according to that we give statements.
For example-
1. If someone made a bad face just after taking a bite of food then we can infer that the person didn't like the food.
2. If someone is going away from a place after another person arrived then we can infer that the first person doesn't like the second person.
3. If someone is very lazy from the beginning of the day then we can infer that the person didn't take proper rest.
Given options are-
A. Hypothesis
B. Inference
C. Procedure
D. Report
Therefore, Stars in the sky appear to be moving. We call this conclusion that is based on observations, clues, or evidence is Inference.
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Answer the question below pls
Answers
Answer:
The answer would be at 120°C
Which of the following is a biotic factor in the picture above?
A. water
B. clouds
C. grass
D. mountain
Answers
Answer:GRASS
Explanation:ITS THE ONLY THING LIVING
Answer:
Grass
Explanation:
Because its the only thing living
Which of these statements about multi-celled organisms are true? (Select all that apply.)
Their cells are smaller than the cells of one-celled organisms.
Their cells vary in size and shape.
Each of their cells can carry out all necessary life activities for that organism.
Most of their cells have unique roles.
EXPLAIN
Answers
Answer:
A.
Explanation:
Their cells are in shape and size
In addition to how much force Earth exerts on the object, which features of an object affect its weight?
O mass and location of the object
O shape and location of the object
O location of the object and how much energy the object has
O mass of the object and how much energy the object has
Answers
Answer:
mass of the object and how much energy the object has
Explanation:
because location doesn't affect an objects weight
Answer: D
Explanation:
mass of the object and how much energy the object has
How is the formation of metamorphic rocks different from that of igneous rocks even though both can take place underground?
Answers
Answer: Igneous rocks are formed when magma (or molten rocks) have cooled down and solidified. Sedimentary rocks are formed by the accumulation of other eroded substances, while Metamorphic rocks are formed when rocks change their original shape and form due to intense heat or pressure.
Explanation:
Identify all the examples that support the Law of Conservation of Mass through chemical changes.
A. Steam rising off a pot of boiling water
B. Carbon Dioxide being produced by mixing Baking Soda and Vinegar
C. Carbon Monoxide released when the engine of a car burns fuel
D. Adding food coloring to frosting
E. Bread dough rising in a baker's oven
PLZ HURRY WILL MARK BRAINLIEST
Answers
Answer:
B
C
Explanation:
Create a 10 question test to acess the improrant topics on deposition, weathering and erosion. you may use multi choice, open ended questions, and fill in the blanks. Put the answers in the question as a resourse to help you.
Answers
Answer:
What is deposition?How does acid rain erode rocks?Fill in the blanks: The very strong _______ would burn if they contacted the skin and can also destroy ______, but _______ rain is much weaker and could never burn the skin.What is the cause of acid rain?Acid rain is rain that is usually _______What is the most important source of acid rain?What can rocks exposed to acid rain do?Explain the difference between weathering and erosion?What can deposition create?State some types of erosion?Explanation:
Deposition was the opposite of sublimation.It infiltrates the cracks below the groundThe very strong acids would burn if they contacted the skin and can also destroy metals, but acid rain is much weaker and could never burn the skin.Acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air.acidicvolcanoesPoison ecosystemsWhen the smaller rock pieces (now pebbles, sand or soil) are moved by these natural forces, it is called erosion. So, if a rock is changed or broken but stays where it is, it is called weathering. Deposition creates many types of landforms on earth. Gravity and weight create rockslides on the sides of hills and mountains, depositing rocks at the bottom.It consists of different types like water, wind, ice, thermal and gravity erosionplease help!
a b c or d
Answers
Answer:
A glass pane / A.
Explanation:
Examples of insulators include plastics, Styrofoam, paper, rubber, glass and dry air. The division of materials into the categories of conductors and insulators is a somewhat artificial division.
Answer:
the answer is A
Explanation:
Are the orbits of the planets could you pls help!!!! Pls don't send scam links !! in the solar system as they revolve around the Sun perfectly
circular?
Explain.
Answers
Answer: Orbits are elliptical, Sun is in focal point of the ellipse.
Explanation:
Orbits are not perfect circles. Distance of Earth from Sun is between
147 million kilometres - 152 million kilometres. When Earth is in closest point of the Sun it moves faster tant in the point which is most far away from Sun.
Kepler´s Laws give more information.
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?