Answer:
Light is made up of wavelengths of light, and each wavelength is a particular colour. The colour we see is a result of which wavelengths are reflected back to our eyes. The visible spectrum showing the wavelengths of each of the component colours.
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An advantage of using renewable energies is? 1.They are harmful to the environment 2.We have a limited supply of them 3.They allow us to take energy from natural processes
Answer:
3. They allow us to take energy from natural processes
Explanation:
There are two major sources of energy namely: renewable and non-renewable. Renewable sources of energy are those natural sources that gets replenished faster than they are utilized, which is contrary to non-renewable sources. Examples of renewable sources of energy are wind energy, solar energy, hydro (water) energy.
According to the question, one advantage or merit that renewable sources have over their counterparts is that they allow us to take energy from natural processes e.g. wind, sunlight etc.
Which best describes a single atom of an element?
A. It is the simplest form of matter.
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B. It can be changed into a compound.
C. It is composed of more than one type of atom.
D. It can be broken down into simpler mixtures.
Answer:
I believe the answer is A: *It is the simplest form of matter" not 100% sure but I think that's correct
Explanation:
Balance this equation. Not all spots have to have a number.
____Na(s) + ____H2O(g) → ____NaOH(s) + ____H2 (g)
2Na+2H2O----2NaOH+H2
Cuando haces ejercicios abdominales estas realizando un trabajo. Si haces el mismo numero de abdominales en la mitad de tiempo que acostumbras, ¿como seria tu rendimiento en terminos de potencia comparandolo con el tiempo normal en que las haces?
Answer:
El rendimiento seria mayor ya que la potencia aumenta.
Explanation:
La potencia aumenta cuando determinado trabajo se realiza en menor cantidad de tiempo.
2B + 3H2 2BH3
How many moles of BH3 are synthesized when 27.0 moles of H2 completely react?
Answer: 18.0 moles of [tex]BH_3[/tex] will be produced when 27.0 moles of [tex]H_2[/tex] completely react.
Explanation:
The balanced chemical equation is:
[tex]2B+3H_2\rightarrow 2BH_3[/tex]
According to stoichiometry :
3 moles of [tex]H_2[/tex] produce = 2 moles of [tex]BH_3[/tex]
Thus 27.0 moles of [tex]H_2[/tex] will produce=[tex]\frac{2}{3}\times 27.0=18.0 moles[/tex] of [tex]BH_3[/tex]
Thus 18.0 moles of [tex]BH_3[/tex] will be produced when 27.0 moles of [tex]H_2[/tex] completely react.
what is a substance combination of different atoms?
Answer:
Brainliest-
Explanation:
what do we call the liquid that the solid Is being added to?
Answer:
When a solid dissolves the solid and the liquid they form a mixture called a solution.
Which of the following particle diagrams represents a mixture?
Answer:
???
Explanation:
i would help answer but your post has no diagrams or at least there not showing up
why hydrogen and oxygen atoms are more stable when they form bonds in a water molecule?
The outer shell of electrons is full, so there is no need to gain or lose electrons.
The hydrogen and oxygen atoms are more stable in water molecules as they get a complete valence shell when they bonded with other atoms.
What is the reaction to the formation of water?In a chemical reaction, two or more reactants react with each other under the chemical condition to form two or more products. The Chemical reaction is defined as a reaction two or more reactant components react with each other to form two or more products.
The water is formed by reacting hydrogen and oxygen. The chemical reaction of water formation is shown below.
[tex]H_2(g)+O_2(g)\longrightarrow H_2O(l)[/tex]
The balanced chemical equation can be defined as a reaction where the number of moles of reactants is equal to the number of moles of products.
[tex]H_2(g)+ \frac{1}{2}O_2(g)\longrightarrow H_2O(l)[/tex]
The hydrogen atoms have one electron and the oxygen has two electrons less than the complete valence shell. But in the water molecule, every atom has a complete valence shell so atoms become more stable.
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Which has more mass, one mole of carbon (C) or one mole of copper (Cu)?
Explain.
How do astronomers observe and learn about celestial
objects?
Answer:
Astronomers use a number of telescopes sensitive to different parts of the electromagnetic spectrum to study objects in space. Even though all light is fundamentally the same thing, the way that astronomers observe light depends on the portion of the spectrum they wish to study.
Explanation:
How many moles are in 5.60 x 1027 molecules of carbon monoxide? with a bridge Please answer quickly I have to turn it in soon
Answer:
9302 moles of CO contain 5.60×10²⁷ molecules
Explanation:
We solve this with Avogadro's number.
NA = 6.02×10²³
This number states the how many particles are in 1 mol of anything.
1 mol of atoms contains 6.02×10²³ atoms
1 mol of molecules contains 6.02×10²³ molecules.
We apply a rule of three:
6.02×10²³ molecules are contained in 1 mol of CO
Then, 5.60×10²⁷ molecules may be contained in (5.60×10²⁷ . 1) / 6.02×10²³
= 9302 moles
What type of mixture is salad dressing please tell me? Tysm!
Answer:
Salad dressing made with oil vinegar, and herb is a homogeneous mixtures. Because heterogeneus mixture is composed of two or more components which are unequal distributed.
But in normal salad it's heterogeneous
What is the molar mass C₆H₁₂O₆
Answer:
molar mass= 180
Explanation:
molar mass = (6×12) + (12×1) + (6×16) = 180
Organisms that are made up of prokaryotic cells are NOT ____________.
Question 3 options:
Bacteria
Multicellular
Simpler than organisms made up of Eukaryotic celled organisms
All of these are true about prokaryotic cells
Answer:
Multicellular
Explanation:
Prokaryotic cells are unicellular because the do not have a nucleus and lack organelles, while eukaryotic cells do have a nucleus, have organelles, and are are multicellular. :)
Organisms that are made up of prokaryotic cells are NOT
Multicellular.
Classification of Organisms based on cellular organisation.Living organisms can be classified based on their cellular organisation.
Organisms that are made up of one cell are known as unicellular organisms.
Organisms that are made up of more than one cell are known as multicellular organisms.
A prokaryote is an organism that lacks distinct nucleus while eukaryote is an organism that possess a nucleus that is enclosed in a nuclear envelope.
While prokaryotes are always unicellular organisms, eukaryotes can be either unicellular or multicellular.
Therefore, organisms that are made up of prokaryotic cells are not multicellular.
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A substance joined by this type of bond shares electrons
Answer: Covalent
Explanation:
A covalent compound is formed when an element shares its valence electron with another element. This compound is formed between two non metals. Example: [tex]HF[/tex]
An ionic compound is formed when an element completely transfers its valence electron to another element. The element which donates the electron is known as electropositive element or the metal and the element which accepts the electrons is known as electronegative element or non metal. Example: [tex]NaCl[/tex]
Can someone answer this asap!! All I know is 188g is incorrect!
Answer:
db gb bg
Explanation:
In what ways are you being physical activie in a typical day?
How does the digestive system work with the muscular system?
A: Digestive System gets nutrients (good) from food and hands it over to the blood and Circulatory System then carries those
nutrients where they need to go.
B: It doesn't
C: The enteric nervous system's network of nerves, neurons and neurotransmitters extends along the entire digestive tract - from
the esophagus, through the stomach and intestines, and down to the anus.
D: The muscular system allows for movement within the body, for example, during digestion or urination.
Answer:
the answer is not d because you can pee without moving. so its a because without the food nutrient no part of our body can work
If 0.150 moles of calcium oxide reacts with carbon dioxide gas, how many grams of calcium carbonate can be produced?
Answer:
15 g of CaCo₃
Explanation:
We'll begin by writing the balanced equation for the reaction. This is illustrated below:
CaO + CO₂ —> CaCo₃
From the balanced equation above,
1 mole of CaO reacted to produce 1 mole of CaCo₃.
Next, we shall determine the number of mole of CaCo₃ produced by the reaction of 0.15 mole of CaO. This can be obtained as follow:
From the balanced equation above,
1 mole of CaO reacted to produce 1 mole of CaCo₃.
Therefore, 0.15 mole of CaO will also react to produce 0.15 mole of CaCo₃.
Finally, we shall determine the mass of 0.15 mole of CaCo₃. This can be obtained as follow:
Mole of CaCo₃ = 0.15 mole
Molar mass of CaCo₃ = 40 + 12 + (16×3)
= 40 + 12 + 48
= 100 g/mol
Mass of CaCo₃ =?
Mole = mass / Molar mass
0.15 = Mass of CaCo₃ / 100
Cross multiply
Mass of CaCo₃ = 0.15 × 100
Mass of CaCo₃ = 15 g
Thus, 15 g of CaCo₃ were obtained from the reaction.
Which part(s) of a microscope forms an enlarged image of a specimens?
A: The light source
B: The focus knobs
C: The stage
D: The objective lenses
Describe the structure or shape of DNA
Answer:
a double helix structure
Explanation:
a two-stranded molecule that appears twisted, giving it a unique shape referred to most commonly as the double helix structure
why copper ions move to the negative electrode in figure 1
Answer:
negative attraction
Explanation:
because a copper ion looses electrons, meaning it's negatively charged, and positives and negatives attract.
What volume of a 3.00M KL stock solution would you use to make 0.300 L of a 1.25M Kl solution?
Answer:
0.125L or 125 mL
Explanation:
See the image for steps!0.125L of 3.00M KI stock solution is required to make 0.300 L of a 1.25M KI solution.
What is solution?A solution is a homogeneous mixture of one or more solutes dissolved in a solvent.
What is stock solution?A stock solution is a concentrated solution that will be diluted to a solution of lower concentration.
stock solution = diluted solution
What do you mean by dilution?Dilution is the process of decreasing the concentration of a stock solution by adding more solvent to the solution. The solvent added is the water. The more the solvent you add, the more dilute the solution is.The equation for dilution is M1V1=M2V2Where, M1 = concentration in molarity (moles/Litres) of the concentrated solution
V2 = volume of the concentrated solution,
M2 = concentration in molarity of the dilute solution
V2 = volume of the dilute solution.
The volume of 3.00M KI solution can be calculated using the dilution equation:
Given:
M1 = 3.00M, M2 = 1.25M, V1 = x, V2 = 0.300L
M1V1 = M2V2
3.00M(x) = 1.25M(0.300L)
x = 0.125L
Hence, 0.125L of 3.00M KI stock solution is required to make 0.300 L of a 1.25M KI solution.
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1. (06.01 LC)
Based on the kinetic theory, which statement is true? (15 points)
A. The particles of matter are stationary.
B. Matter is composed of very small particles.
C. Matter is made up of only charged particles.
D. The particles of matter have zero kinetic energy.
Answer:
B. Matter is composed of very small particles.
Explanation:
All matter is composed of extremely small particles called atoms. All atoms of a given element are identical in size, mass,
The statement is true based on the kinetic theory is that; "matter is composed of very small particles.".
Kinetic theory of matter
The kinetic theory of matter holds that the particles that compose matter are in constant random motion. In this theory, all matter is composed of molecules.
Now, the statement is true based on the kinetic theory is that; "matter is composed of very small particles.".
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What is the relationship between the density and position of each Earth layer?
Answer:
The atmosphere and Earth's interior are layered by density. Gravity pulls more strongly on denser materials so denser materials are at the center of things. Earth's core, at its center, is denser than its crust. The lowest layer of the atmosphere is denser than the upper layer.
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Answer:
Gravity pulls more strongly on denser materials so denser materials are at the center of things.
Explanation:
Earths core at its center is denser than its crust the lowest layer of the atmosphere is denser than the upper layer
Which lists the substances from least to most acidic?
a. ammonia, blood, milk, orange juice
b. orange juice, milk, blood, ammonia
c. ammonia, milk, blood, orange juice
d. orange juice, blood, milk, ammonia
Which type of plate boundary is associated with seafloor spreading at the source of the spread: convergent, divergent, or transform?
HURRY!
NaOH + HF --> NaF + H2O If you are given 3 moles of HF at the beginning of the reaction, how many moles of NaF will be produced?
Answer:
NaOH+HF-------NaF+H2O
1 mole Of HF=1mole of NaF
3mole HF= X
X=3mole of NaF
Which phrase defines altitude?
how tightly molecules are packed
a column of air pushing on an area
the force pushing on an area or a surface
the height of a given point above sea level