Which of the following carbohydrates is a polysaccharide and not a simple sugar?O A. Glucose
O B. Ribose
O C. Starch
O D. Fructose
O E. Galactose

Answers

Answer 1

Answer:

Starch is a carbohydrate which is a polysaccharide and not a simple sugar like glucose, fructose,etc.

What are carbohydrates?

A carbohydrate is defined as a bio-molecule which consists of carbon,hydrogen and oxygen atoms which are usually in the ratio of 2:1 with the empirical formula C $_n$ (H₂O) $_n$ .

This term is most commonly used in biochemistry as a synonym of saccharide which is a group of sugars, starch and cellulose.

They perform various functions in living organisms. They serve as an energy source and as well as structural components . They are a key component in providing nutrition and are found in wide variety of natural as well as processed foods.

Carbohydrates occur as cellulose in the cell walls of plants and is one of the components of insoluble dietary fibers.

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Answer 2

Answer:

Answer:

Explanation:

The polysaccharide is starch which contains many glucose molecules.

The rest are either monosaccharide or disaccharides.

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8H2 + S8 8H2S Based on the mole ratios, what can most likely be predicted?
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B.8 mol of hydrogen will react with 1 mol of sulfur.
C. 8 mol of hydrogen will react with 8 mol of sulfur.
D.16 mol of hydrogen will react with 8 mol of sulfur.

Answers

I believe the correct answer from the choices listed above is option B. Based on the mole ratios in the chemical reaction, we can say that 8 mol of hydrogen will react with 1 mol of sulfur. I am certain with this reaction. Hope this answers the question.

Answer: B

Explanation: Queen B told me

What is the mass of an aluminum cylinder that has a volume of 1.50m3

Answers

Answer: The mass of aluminium cylinder is 4065 kg.

Explanation:

Density is defined as the ratio of mass of the object and volume of the object.

Mathematically,

$\text{Density}=\frac{\text{Mass of the object}}{\text{Volume of the object}}$

We are given:

Density of aluminium = $2710kg/m^3$

Volume of aluminium cylinder = $1.50m^3$

Putting values in above equation, we get:

$2710kg/m^3=\frac{\text{Mass of aluminium cylinder}}{1.50m^3}\n\n\text{Mass of aluminium cylinder}=4065kg$

Hence, the mass of aluminium cylinder is 4065 kg.

Aluminium density: 2700g/m^3

therefore; 2700g/m^3 X 1.50m^3 = 4050g = 4.05Kg

Just use the units of density (mass/volume) and the units of what's given to figure it out :)

How many grams of calcium bromide are in 50.0 mL of a 0.25 M calcium bromide solution?

Answers

The mass of the compound can be calculated by the molarity. The mass of the calcium bromide in the given solution is 2.5 g.

The mass of the given compound can be calculated by the molarity formula,

$\bold {M = \frac {w}{m* v} * 1000}\n\n\bold {w = \frac {M* m* v}{ 1000}}$

Where,

M- molarity of the solution = 0.25 M

w - given mass =?

m -molar mass of Calcium bromide = 200 g/mol

v-volume in mL= 50 mL

Put the values in the formula,

$\bold {w = \frac {0.25* 200* 50}{ 1000}}\n\n\bold {w = 2.5\ g}$

Therefore, the mass of the calcium bromide in the given solution is 2.5 g.

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$C_(m)=(n)/(V_(r))\n\nm=(m)/(M)\n\nC_(m)=(m)/(MV_(r)) \ \ \ \ \Rightarrow \ \ \ \ m=C_(m)MV_(r)}\n\nC_(m)=0.25(mol)/(L)\nM_{CaBr_(2)}=200(g)/(mol)\nV_(r)=50mL=0.05L\n\nm=0.25(mol)/(L)*200(g)/(mol)*0.05L= \emph{\textbf{2.5g}}$

How does vegetation slow and prevent sediment loss?

Answers

Vegetation cover is the most effective and practical way to prevent loss of sediment. The roots of vegetation such as grass bind soil particles together to resist erosion especially from runoff water. Vegetation helps absorb the impact of raindrops to prevent detachment of soil particles. Vegetation can flatten act like shingles on a roof, which allows the runoff to flow above the soil.Stiff standing vegetation act as a wind break, reducing wind velocity, such that it is not powerful enough to dislodge sediments from the ground surface.

Final answer:

Vegetation slows and prevents sediment loss in rivers and streams by binding the soil together and slowing down the flow of water. Shade from plants also helps reduce phytoplankton growth.

Explanation:

Vegetation plays a crucial role in slowing and preventing sediment loss in rivers and streams. The roots of plants help bind the soil together, reducing erosion caused by the force of water. As water flows through vegetation, it is slowed down, allowing sediment to settle out. Additionally, plants provide shade, which helps keep the water temperature lower, creating an environment less suitable for phytoplankton growth.

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What chemical change is magnetizing steel

Answers

Magnetizing steel is a physical change, not a chemical change.

Magnetizing steel is a physical change, not a chemical change because it does not change the chemical composition of the steel.

A chemical change is a change in which new substances are formed. This is because the atoms in the original substances are rearranged to form new atoms or molecules. There is no chemical change when magnetizing steel. For example, when iron rusts, it reacts with oxygen to form a new substance called iron oxide.

A physical change is a change in which the form of a substance is changed, but the substanceitself is not changed. For example, when you melt ice, you are changing the form of water from a solid to a liquid, but the water itself is not changed.

When you magnetize steel, you are simply aligning the magnetic domains in the steel. Magnetic domains are regions of a material that have a net magnetic field. When the magnetic domains are aligned, the steel becomes magnetized.

Magnetizing steel does not change the chemical composition of the steel. The steel is still made up of the same atoms, and the atoms are still arranged in the same way. The only difference is that the magnetic domains are aligned, which gives the steel its magnetic properties.

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A car with constant speed travelso 150 km in 7200 seconds what is the speed of the car