Answer:
leachate
Explanation:
Bioleaching. Certain bacteria can break down ores to produce an acidic solution containing copper(II) ions. The solution is called a leachate and the process is called bioleaching . Bioleaching does not need high temperatures, but it produces toxic substances, including sulfuric acid, which damage the environment.
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Which statement applies only to electric force insted of electric and magnetic forces
Answer:
If the options are
A. It can push objects apart
B. It can pull objects together
C. It acts between charged particles
D. It acts between objects that do not touch
I'm pretty sure it would be C.
Sry if wrong but have nice day! <3
The chemical equation below shows the amount of the reactants used and the amount of only one of the products formed. How much water (H2O) should be formed in this chemical reaction? CH4 mass 4 + 2O2 mass 16 CO2 11 + 2h2O mass ?
Answer:
CH4 + 2O2 → CO2 + 2H2O
Explanation:
This is all i could come up with im sorry.
The amount of water formed in the given chemical reaction is 9 grams.
What is Stoichiometry?Stoichiometry is the calculation for the determination of the relative amount of reactants and products in chemical reactions. Stoichiometry is based on the law of conservation of mass where the total mass of the reactants in reaction equals the total mass of the products.
If the quantity of one reactant is known and the quantity of the product can be determined empirically, then the quantity of the other reactants can be calculated.
Given chemical equation is:
CH₄ + 2O₂ [tex]\longrightarrow[/tex] CO₂ + 2H₂O
16g 32g 44g 32g (from their molecular masses)
The amount of methane, oxygen, and carbon dioxide is 4g, 16g, and 32 g respectively.
16g of methane react with oxygen = 32g
4g of methane will react with oxygen = 8g
It means here methane is the limiting reagent as the given amount of oxygen is more than reacted one. So CH₄ will decide the amount of water.
16g of methane produces water = 32g
Then 4g of methane will produce water = (32/16) × 4 = 9 g
Therefore, 9 grams of water should be formed in this reaction.
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what coefficient will go in the box
Answer:
5
Explanation:
I don't remember very thing from this unit but I believe 5 makes it possible
If a substance has a PH of 7 is it a acid, base or a neutral.
Answer:
Neutral
Explanation:
A pH below 7 is acidic and a pH above 7 is basic, and a pH of 7 is neutral.
What I need help fast!
This is due tomorrow so please help! : name a product where viscosity is important its creation or use explain why it is important
After the addition of the iron, the test tube now contains iron (II) sulfate solution and copper
particles. The iron has become part of a
A
compound with the sulfate, which must be separated through chemical methods
B
compound with the sulfate, which can be separated through physical methods
C.
mixture with the sulfate, which must be separated through chemical methods
D. mixture with the sulfate, which can be separated through physical methods
The iron has become part of a A. compound with the sulfate, which must be separated through chemical methods.
Iron (II) sulfate is also referred to as ferrous sulfate is a reducing agent. The hydrates form is used for the treatment of iron deficiency.
It should be noted that a chemical change is involved in the formation of iron (II) sulfate. It can't be separated by physical means and isn't reversible.
In this case, iron (II) sulfate will be separated by chemical methods.
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Iron sulfate is a compound which can be separated through chemical methods.
Iron is present in a compound form with the sulfate, which must be separated through chemical methods because both iron and sulfate reacts with each other through making of chemical bonds with each other. Those elements that combine with each other chemically at a fix ratio can be separated from each other through chemical methods.
While on the other hand, in mixture substances combine with each other physically so they can be separated from each other through physical methods so we can conclude that iron sulfate is a compound which can be separated through chemical methods.
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it!
t
Calculate How old was the tree when it was
cut down?
Answer:
No numbers how are we supposed to know
Explanation:
the relation between stability and solubility
Answer:
2
Nobody is able to foresee the solubility of a product. There are some experimental rules, but they all have exceptions, that nobody is able to explain.
Just have a look on the Calcium salts made with the halogens (F, Cl, Br, I). There is a nice analogy among Cl, Br and I, but not F. Look ! The Calcium chloride CaCl2, bromide CaBr2 and iodide CaI2 are all extremely soluble in water. They are all soluble in less than their weight of water. But calcium fluoride CaF2 is among the least soluble product on Earth. The principal mineral for Fluoride is CaF2, and it can be found everywhere at the surface of the Earth. If this mineral would have been at least a little soluble in water, the rains would have washed away this mineral in the geological times. Why is there such a huge difference between calcium fluoride and the other halogenides ? Nobody knows !
Another example. Potassium perchlorate is the only potassium salt which is very weakly soluble in water. By comparison, Sodium perchlorate is extremely soluble in water. Why? Another example: the number of Silver compounds which are soluble in water is limited. In organic solvents, it is even worse. But the Handbook of Chemistry and Physics says that Silver perchlorate is soluble in toluene. Why? Nobody knows.
From time to time there are articles published in journals like the Journal of Chemical Education. The author is proud of displaying a theory filled with new parameters, for explaining the solubility of quite a lot of chemicals. But there are always exceptions, that he regrets not to be able to explain.
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Answer:
D) All of the above
Explanation:
When the temperature of an object increases, the average kinetic energy and speed of its particles increases. When the average kinetic energy of its particles increases, the object's thermal energy increases. Therefore, the thermal energy of an object also increases as its temperature increases.
what kind of bonds involve a transfer of electrons? what kind of bond involves sharing of electrons?
Answer:
While covalent bonding involves sharing electrons between two atoms, ionic bonding involves the complete transfer of electrons from one atom to another, creating positive and negative ions. These ions are then held together by the attraction between their opposite charges.
Explanation:
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6. All changes in states of matter (freezing, evaporation, condensation, etc.) are
a. physical changes
b. chemical changes
Pretty sure its Physical Changes
No chemical reaction is happening.
Answer:
Changes of states are physical changes
Explanation:
They are reversible changes that do not involve changes in matter's chemical makeup or chemical properties.
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A chemist is identifying the elements present in a sample of seawater. What characteristic of an element’s atoms always determines the element’s identity?
What is a non-example of a nucleus? Please give me a non-living thing.
Answer:
They are prokaryotes and both have tough cell walls. ◦ The cytoplasm contains ribosomes, but no organelles. ◦ There is no nucleus for organisms in this category.
Explanation:
Answer:
rock- non living
( Prokaryotes don't have a nucleus)
Explanation:
Sounds with small amount of energy______distances than sounds with more energy
A.Shorter
B. Longer
C.same
D. Medium
The sequence of bases in a DNA template strand is 5'AAAACTGTGCAT3'. What is the corresponding mRNA produced? Label the 3' and 5' end in your answer Enter the mRNA sequence with labels for the 3' and 5' ends.
The corresponding mRNA to 5'AAAACTGTGCAT3' is
3'UUUUGACACGUA5'.
What is nucleotide sequence?Nucleotides are the bases that are arranged in a specific way, and it joins the two strands of DNA and RNA.
In DNA, four nucleotide bases are present AT and GC. They are attached to each other.
In RNA, the same bases are present but instead of T, U uracil is present.
When reading the DNA, the RNA bases complimentary join with the bases of DNA.
Thus, the corresponding mRNA sequence is 3'UUUUGACACGUA5.
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Help please its science
Answer: any answer choices
Explanation:
when is the energy source used to fuel photosynthesis
Answer:
Photosynthesis, process by which green plants and certain other organisms use the energy of light to convert carbon dioxide and water into the simple sugar glucose. In so doing, photosynthesis provides the basic energy source for virtually all organisms.
Explanation:
Which subatomic particles are found in the nucleus of an oxygen atom?
F Neutrons and Electrons
G Electrons and Protons
H Protons and Neutrons
J Protons, Neutrons, and Electrons
Answer:
the answer is protons and neutrons
Explanation:because
The subatomic particles are found in the nucleus of an oxygen atom are Protons and Neutrons. Thus, option H is correct.
What are subatomic particles?An electron is defined as a subatomic particle which is charged negatively either bound to an atom or not it means free. The nucleus of an atom is made up of electron, proton and neutron. The electron is a basic particle and electron is not made of anything.
The nature of electron is free it means they are present freely in nature and consist of an atom.The main function of electron is that they play the role of negatively- charged component of an atom.
The electrons are primary source of current conducting and electrons number as well as atomic number of an element is always same or equal. There is no size of electron but the mass of electron is 9×10^-31.
Therefore,The subatomic particles are found in the nucleus of an oxygen atom are Protons and Neutrons. Thus, option H is correct.
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Directions: count each side of the reaction. Circle yes or no if it follows the law of conservation of mass
Answer:
Yes, it becomes 2 of H20 which is water
How is energy causing motion or creating a change in this image? (2 points)
Energy from fuel allows the plant to grow and make its own food.
Energy from the sun allows the plant to grow and make its own food.
Energy from the wind allows the plant to grow and make its own food.
Energy from the water allows the plant to grow and make its own food.
Answer:
Energy from the sun allows the plant to grow and make its own food.
Explanation:
From this image, we clearly see the leaves exposed to sun which supplies solar energy to the plant.
Plants are capable of producing their food from inorganic chemical sources. In the process of photosynthesis, plants takes carbon dioxide and water in the presence of sunlight to manufacture their own food. The food provides energy that allows the plant to grow.Answer:
Energy from the sun allows the plant to grow and make its own food
Explanation:
Gamma rays are often used to kill microorganisms in food, in an attempt to make the food safer. Some people contend that this irradiated
food is actually less safe to eat. Which, if true, would most effectively dispute their idea? (1 point)
a
Irradiated food only emits alpha particles, which are harmless.
Ob
Irradiated food is shown to not be radioactive.
C
Irradiated food only contributes to background radiation.
Irradiated food has molecules that undergo transmutation,
Od
Answer:
b . Irradiated food is shown to not be radioactive.
Explanation:
If it can be proven that irradiated food is not radioactive, then it will effective dispute the idea that irradiated food are less safe to eat.
An irradiated food is one in which ionizing radiations have been employed to improve food quality. Thus, bacteria and other food spoilers can be exterminated from the food. Most irradiated food do not contain radiation and are fit for consumption.If it can be proven, that this is true, then it will challenge the idea that irradiated foods are not safe.
A dish is given to you, which contains a blackish yellow powder. When you move a magnet over it, black particles fly upwards and get stuck to the magnet. All that is left in the dish is a yellow powder, which you discover to be sulfur.
Was your original powder an element, compound, or mixture, and how do you know?
PLEASE ANSWER IF YOU HAVe an ANSWER OR NOt JUST FOR THE POINTS OR ELSE YOU WANT TO BE REPORTED!!!! please and thank you!
Answer:
It is a Mixture
Explanation:
It's a mixture because it was a substance made from mixing other substances together. And when the magnet went over the powder, the iron is lifted and not the sulfur. So the different parts of it can be separated by any physical means that allows the parts to seen separated
Answer:
its is a mixture
Explanation: because I did the question
What historical data from Tokyo could have helped in the development of tokyo's new flood protection system?
Answer: This historical data could have helped with the development of Tokyo’s new flood protection system:
historical frequency of flooding
amount of flooding during each storm
computer models forecasting the worst possible flooding
Explanation:
The frequency of flooding can help Tokyo measure when the next flood will be.
The amount of flooding can help Tokyo determine how much water will come during the flood.
And computer models forecasting the worst possible flood can help reach out to people and tell whether they need to evacuate or what they should plan for.
With over 6 billion people living on Earth, it is common for two people to have the same DNA.
True
ОR
False
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Answer:
rank from lower to higher electronegativity
16)Li
C
N
17)Ne
C
O
18)Si
P
O
19)K
Mg
P
20)He
S
F
How is the pH of an acidic substance raised?
1) Dilute it.
2) freeze it.
3) Stir it.
4) Concentrate it.
Answer: 4) Concentrate it
Explanation:
How many moles are there in a 122 gram sample of nickel (Ni)?
7.16 x 103 moles
6.22 mol
2.08 mol
0.481 mol
The atomic mass of nickel is 58.71 gm and the given mass of nickel is 122 gm. Therefore, 2.08 moles are present in a 122-gram sample of nickel.
Nickel:
The atomic number of nickel is 28.The symbol of nickel is Ni.Density of a nickel 8.908 g/cm3.It is a d block element.It belongs to group 10 and period 4.It is also called transition metal.It is a metal and is located between groups 2 and 3.Mass of nickel given: 122 grams.
Atomic mass of nickel: 58.71 g mol
Number of moles = Mass / molar mass
= 122/ 58.71
= 2.078
= 2.08 moles.
The atomic mass of nickel is 58.71 gm and the given mass of nickel is 122 gm. Therefore, 2.08 moles are present in a 122-gram sample of nickel.
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Chemistry, please help
Answer:
Name ; Nickel(ii)Hydroxide
Formula;NI3O6
Explanation:
Which of the following is true about waves?
A.
They are always visible.
B.
They always move matter.
C.
They carry energy.
D.
They can only travel though outer space.
Answer:
c. they carry energy is the answer
Answer:
C. they carry energy
Explanation:
Energy can be carried from one place to another by waves, including water, light, and sound waves. Waves are oscillating disturbances that travel through but do not move matter.
Infrared radiation escaping from hot coals is an example of invisible waves carrying energy. This energy can be felt as heat.