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Which metal reacts spontaneously with NiCl2(aq)?
A) Au(s)
B) Cu(s)
C) Sn(s)
D) Zn(s)
Answers
Answer:
THE answer IS B)cu(s)
Explanation:
HOPE ITS HELP
The metal reacts spontaneously with aqueous solution of NiCl₂ is Zinc as it is more reactive.
What is reactivity series?Electro chemical series is a reactivity series which tells about the reactivity of the metals present in any solution in the increasing order.
According to the reactivity series, Zinc is present at the upper position as compares to other three given metals and their reactivity will be represented as:
Zn > Ni > Sn > Cu > Au
So, zinc will replace the nickel atom from NiCl₂ solution.
Hence option (D) is correct.
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Match the term with its description.
answer choices
Aerobic respiration
Alcoholic fermentation
Anaerobic respiration
Lactic acid fermentation
The production of energy without the presence of oxygen
A process that converts sugars into cellular energy, ethanol, and carbon dioxide
A process that converts sugars into cellular energy, ethanol, and carbon dioxide
The breakdown of food to create energy in the presence of oxygen
Answers
Answer:
Aerobic respiration is metabolic process in which food ( glucose) is metabolized ( in presence of oxygen) to derive large amount of energy ( in the form of ATP) through a series of three stages that is glycolysis, kreb cycle, and electron transport chain.
Anaerobic respiration another from of cellular respiration where food is broken down to derive energy in the absence of oxygen.
Alcoholic fermentation is a metabolic process by which sugar is converted into cellular energy ( in the form of ATP), ethanol, and carbon dioxide.
Lactic acid fermentation is a metabolic process by which glucose is converted into cellular energy and lactic acid.
Thus, the correct match is-
Aerobic respiration- A) The breakdown of food to create energy in the presence of oxygen.
Alcoholic fermentation- C) A process that converts sugars into cellular energy, ethanol, and carbon dioxide.
Anaerobic respiration- B) The production of energy without the presence of oxygen.
Lactic acid fermentation- D) A process that converts glucose into cellular energy and lactic acid.
Explanation:
Answer:
Aerobic respiration – The breakdown of food to create energy in the presence of oxygen
Alcoholic fermentation – A process that converts sugars into cellular energy, ethanol, and carbon dioxide
Anaerobic respiration – The production of energy without the presence of oxygen
Lactic acid fermentation – A process that converts glucose into cellular energy and lactic acid
view pics for proof :)
Is acetaminophen an ionic or molecular compound? Explain your answer in complete sentences.
Answers
Answer:
Acetaminophen is a molecular compound and not an ionic compound.
Explanation:
The formula of this compound is C₈H₉NO₂. Ionic compounds are formed between metals and nonmetals. In molecular compound the bond type is covalent.
the air pressure from the atmosphere measures 0.5atm at an altitude of 18,000 ft. How much pressure is this in pounds per square inch?
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Answer:
7.5 pounds per square-inch
At sea level, one square-inch of any surface has about 15 pounds of air sitting on top of it. At 18,000 feet, that same square inch has only 7.5 pounds per square-inch (psi) exerted on it.
The air pressure from the atmosphere measures 0.5atm at an altitude of 18,000 ft. than the pressure will be 7.5 pounds per square-inch.
What is the calculation at sea level?At sea level, one square-inch of any surface has about 15 pounds of air sitting on top of it. At 18,000 feet, that same square inch has only 7.5 pounds per square-inch (psi) exerted on it.
As the altitude increases, the atmospheric pressure increases. It's actually the opposite: from the graph, we see that as the altitude increases (going towards right on the graph), the pressure decreases.
The atmospheric pressure is 14 pounds per square inch at sea level.If we take altitude=0, we see that the value of the pressure is 14 pounds per square inch. As the altitude approaches sea level, the atmospheric pressure increases.
As the altitude approaches sea level we see that the value of the pressure increases. The atmospheric pressure gets close to 14 pounds per square foot as the altitude continues to increase.The pressure is 14 pounds per square inch only when the altitude is 0 miles above sea level.
Therefore, The air pressure from the atmosphere measures 0.5atm at an altitude of 18,000 ft. than the pressure will be 7.5 pounds per square-inch.
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i can't figure this out, can someone help me?
Answers
Answer:
No
Explanation: I don’t know what to do
Explanation:
Because every element is balanced on both sides.
There’s 1 carbon in the reactant and 1 in the product.
There’s 4 hydrogen in the reactant and 4 on the product.
There’s 4 oxygen in the reactant and 4 in the product.
True or False: You can find the mass of the products by adding the mass of the reactants together
Answers
Answer:
k
Explanation:
What have all living things evolved from?
Coprolites
Earlier species
Fossils in rocks
Shells
Answers
Answer:
Coprolites.........!!!
Answer:
all living beings are involved from early spices
________ are __________ for inherited traits.
PLSS ANSWER ASAP I BEG
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Answer:
looks and cancer
Explanation:
you look like your parents and desises can be inhereted
why do we have night and day? (i can't find science so i just put it in chemistry)
Answers
Answer:
So we get to go to sleep in my opinion. And because the world all have sunlight at different times. So it makes sense to have separate times of the day. Night and day also this is most likely one reason for why we do have days.
Explanation:
it’s because we have different times that we get sunlight at in different places.
Which unit conversion allows you to convert 21.0 gallons into milliliters?
Some English and English-metric unit relationships: 1 liter = 1.057 quarts, 1 gallon = 4 quarts
Answers
Answer:
Explanation:
we are given
there are in 0.073 gallons
we can see that there are two non-zero places after decimals
so, there are two siginificant figures
step-1: Change gallons to quarts
we know that
1 gallon = 4 quarts
so, we can write as
step-2: Change into liter
we know that
1 liter = 1.057 quarts
or
step-3: Change into millilitre
we know that
Since, it is asking for only two significant figures
so, we can also write as
...................Answer
PLZ HELP! :) thank you
Answers
Answer:
biotic
Explanation:
because all of them are living
what s thisssss oneeeeeee
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Explanation- equals 459
Why do lows appear where there are more clouds and Highs appear where it is clear? (EXPLAIN)
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Chiara knows that weight is affected by gravitational pull. She is putting together a poster to display in her classroom.
Since the moon's gravity is less than Earth's, all objects, including mammals, have different weights on the moon than on Earth. Use the table below to calculate how much a dog weighs on the moon.
Answers
Answer: A
Explanation: 150 lb * 1/6 = 25 lb
Chiara knows that weight is affected by gravitational pull. The weight of the dog on the moon is 25 lb. The correct option is A.
What is gravitational pull?Gravitational pull is the force of gravitation that pulls all the objects towards themselves. The force of gravitation is different on different planets, and on the moon, the gravitational pull of the moon is lesser than the earth.
The weight of the dog on the earth is 150 lb
The weight of any object on the moon is 1/6th of the weight of any object on the earth.
So to calculate the weight of the object on the moon, we should multiply the given weight of the dog on the moon by 1/6 to get the result.
150 lb x 1/6 = 25 lb
Thus, the weight of the dog on the moon is 25 lb. The correct option is A.
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• __________ genotype are two __________ (AA) or two __________ (aa) alleles.
• _________ are a pair of ________ alleles (Aa).
PLEASE ASWEER ASAP I BEG YOUU POLSSSDSD U WILL GET BRAINLIEST
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The graphs show temperature and precipitation information for an area.
Which biome best describes the area represented by the graphs shown?
Answers
Answer:
Desert
Hope I helped
What happens to the reaction rate as the reactants get used up in a reaction?
O
A. The rate of the reaction is not affected by the concentration of
reactants.
B. The rate of the reaction increases steadily as products are formed.
O
O
O
C. The rate of the reaction begins to decrease as reactants are used
up
O
D. The rate of the reaction stays constant until the reactants are
gone.
Answers
The rate of the reaction depicts the speed at which the reaction occurs to produce the products. As the reactants get used up the reaction rate starts decreasing. Thus, option C is correct.
What are the factors affecting reaction rate?
The reaction rate of the chemical reaction gets affected by numerous factors that include temperature, the concentration of the reactants, catalyst, surface area, and physical state of the reactant.
The concentration of the reactant has a direct effect on the reaction rate as they are the deciding factor of the product formation. At the beginning of the reaction, the speed is fast compared to the end.
As the reactants start getting used up the reaction rate slows down as the molecules are not able to collide faster with other molecules to form the product.
Therefore, in option C. the reaction rate decreases with a decrease in concentration.
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Scientists believe that the modern horse developed from a short, horse-like mammal about the size of a dog. Over millions of years, the horse increased in size and developed much longer legs. Horses with longer legs had a better chance of surviving than the shorter-legged members of the herd. How did longer legs help horses survive?
A. They allowed the horses to reach nuts in trees.
B. They allowed the horses to outrun predators.
C. They allowed the horses to carry more body weight.
D. They allowed the horses to capture prey.
Answers
Answer:
B
Explanation:
Horses with longer legs could out run predators and survive. Not getting eaten or injured helps with staying alive long enough to reproduce.
Order these by size/complexity in descending order. (largest/most complex on top) Reorder answers
1. DNA Reorder answers
2. Cells Reorder answers
3. Atoms Reorder answers
4. Chromosomes ODER THEM PLEASE!!
Answers
Answer:
1)Cells
2)Chromosomes
3)DNA
4)Atoms
Explanation:
How do microorganisms influence the chemical characteristics of soil? Explain Please.
Answers
Answer:
Soil microbes are also important for the development of healthy soil structure. ... Soil microorganisms are both components and producers of soil organic carbon, a substance that locks carbon into the soil for long periods. Abundant soil organic carbon improves soil fertility and water-retaining capacity.
Explanation:
Soil microbes are also important for the development of healthy soil structure. ... Soil microorganisms are both components and producers of soil organic carbon, a substance that locks carbon into the soil for long periods. Abundant soil organic carbon improves soil fertility and water-retaining capacity.
Object A has a mass of 600 kg. Object B has a mass of 200 kg. They are both pushed with 10 Newtons of
force. Which of the following STATEMENTS is true?
A. Object A will accelerate more slowly than object B.
B. Object A has less mass than object B.
C. Both objects will accelerate at the same speed.
D. Object A will accelerate more quickly than object B.
Answers
Answer: D
Explanation:
A has more kg/mass than B
Please answer the following question I give you.
1. What do waves begin with? (this is science)
2. What do waves transfer?
3.What do waves not transfer?
Answers
Answer:
1.Waves are caused by wind
2. energy
3. matter
Answer: Wave is a common term for a number of different ways in which energy is transferred; so in electromagnetic waves, so the energy is transferred through vibrations of electric and magnetic field. Does that answer your question.
Explanation:
That is my answer
How do organisms that can’t make their own glucose through photosynthesis, get glucose?
Answers
Answer:
All explained on the site! Just cope and paste!
Explanation:
https://ssec.si.edu/stemvisions-blog/what-photosynthesis
Hope this helped!
Oxygen has 8 positively-charged protons. What is the number of negatively-charged electrons in an atom of Oxygen?
Answers
Answer:
Answer 9: Oxygen is atomic number 8 on the periodic table, which means it has 8 protons!
Explanation:
Oxygen's 8 electrons are negatively charged, and they orbit the atomic nucleus and balance the positive charge of the 8 protons. The positive charge of 1 proton exactly cancels the negative charge of 1 electron.
because the positive and negative atoms always valence out.
hope this helps!
A rock with different fossils is shown below:
A diagram labeled Fossil Layers is shown. The topmost layer is labeled Fish and shows the skeleton of a fish, the second layer from the top is labeled Shell and shows a shell, the third layer from the top is labeled Fern and shows a fern leaf, and the lowermost layer is labeled oak and shows an oak leaf
Based on the fossil, which organism evolved first?
Fern
Fish
Oak
Shell
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Help asapppppppppp plsssssssssssss
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Which statement best describes the motion of
the dye molecules in the water?
The dye molecules
o move in a directed way from high to low
concentration.
o move randomly through collisions in no
particular direction.
stay close to other dye molecules as they
move through the water.
Low
Check ansive
Answers
Answer:The statement that best describes the motion of dye molecule in water is directed from a region of high to low concentration. The motion of the particles of the dye in water is described as diffusion: diffusion is the movement of molecules of a substance from one position to another.
Explanation:
Option A is correct. The statement that best describes the motion of the dye molecules in the water is "the dye molecules move in a directed way from high to low".
The motion of dye molecules in water is known to be random. Another name for random motion is Brownian motion and since diffusion is also Brownian motion, hence we can term the motion of the dye molecules in the water as "diffusion".
The water is held together by intermolecular forces and these forces are the ones that attract the molecules of the die carrying them away and making the process of molecular transport of the dye to be accelerated (moving from a region of high concentration to low concentration).
In conclusion, the statement best describes the motion of the dye molecules in the water is "the dye molecules move in a directed way from high to low".
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Complete the sentences to identify the difference between a nonmetal atom and its anion.
In an anion, there are more *blank* than *blank*, giving the anion a *blank* charge.
In nonmetal atoms, the number of *blank* and *blank* are the same and there is a *blank* charge.
key bank:
- a positive
- no net
- electrons
- protons
- a negative
- neutrons
Answers
Answer:
more protons than neutrons and the number of electrons and blank are blank
Explanation:
The complete sentences that distinguish the difference between a nonmetal atom and its anion are as follows:
In an anion, there are more electrons than protons, giving the anion a negative charge. In nonmetal atoms, the number of protons and neutrons are the same and there is a negative charge. What are Non-metals?Non-metals may be defined as the type of chemical element that lacks the characteristics of a metal. They do not show any metallic attributes. But in the periodic table, they range from colorless gases to shiny and high melting point solids.
In the whole periodic table, elements are classified into three parts. They are metals, non-metals, and metalloids. Each classification has its own attributes and characteristic properties.
The non-metals significantly gain electrons due to their stronger nuclear charge and become negatively charged anions.
Therefore, the complete sentences that distinguish the difference between a nonmetal atom and its anion are appropriately described.
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What determines how much a substance will change temperature?
Answers
Answer:
it depends on the mass of the situation
Explanation:
Answer all of dem Free BRAINIEST ON THE ROLL
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Explain:
