Chemistry High School

Which foods are examples of complex carbohydrates? (Select all that apply.)

Answers

Answer 1

Answer:

Here all the given options are examples of complex carbohydrates.

Explanation:

As all these contains sugar, starch and fibre.

Related Questions

The chemical formula for water is what does the formula show about each element in the compound?.

Answers

The formula of water compound is given by H_2O

This states that

1 molecule of water contains

2 hydrogens(H)1 Oxygen(O)

And if we write the chemical reaction

2H_2+O_2—›2H_2O

At a temperature of 273K, a 400 mL gas sample has a pressure of 760 mm Hg. If the pressure is changed to 380 mmHg, at which temperature will this gas have a volume of 551mL?

Answers

Answer: The correct answer is 188.03K.

Explanation:

As a result, the gas sample will have a volume of 551mL at a temperature of 188.03K.

what challenges arise when nuclear material is removed from a power plant?

Answers

Answer:

it destroy the surrounding area

Based on the Law of Conservation of Mass, what's the minimum amount of Magnesium that will react with 32g of Oxygen to produce 80.6g of Magnesium Oxide?

Answers

mass before reaction = mass after reaction

Mg + O = MgO

Mg + 32 = 80.6

Mg = 80.6 - 32 = 48.6 (a)

Oxygen gas occupies a volume of 95 ml at 305 k. what volume will it occupy at 550 k?

Answers

The new volume of the oxgen gas as the temperature is increased is 171.3ml.

Given the data in the question;

Initial olume of oxygen gas; [tex]V_1 = 95ml = 0.095L[/tex]Intial temperature; [tex]T_1 = 305K[/tex]Final temperature; [tex]T_2 = 550K[/tex]Final volume of oxygen gas; [tex]V_2 = \ ?[/tex]

Charles's law

Charles's law states that "the volume occupied by a definite quantity of gas is directly proportional to its absolute temperature.

It is expressed as;

[tex]\frac{V_1}{T_1} = \frac{V_2}{T_2}[/tex]

To determine the new volume of the oxgen gas as the temperature is increased, we substitute our given values into the expression above.

[tex]\frac{V_1}{T_1} = \frac{V_2}{T_2}\\ \\ \frac{0.095L}{305K} = \frac{V_2}{550K}\\\\V_2 * 305K = 0.095L * 550K\\\\V_2 * 305K = 52.25LK\\\\V_2 = \frac{52.25LK}{305K} \\\\V_2 = 0.1713L\\\\V_2 = 171.3ml[/tex]

Therefore, the new volume of the oxgen gas as the temperature is increased is 171.3ml.

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In a redox reaction, which ion would you expect to be more easily reduced?.

Answers

You would expect the cation to be more easily reduced.

how do you find the oxidation numbers for H3PO4

Answers

The oxidation number of this atom is probably +5, but it really depends on the reaction. Could you send me the picture of the reaction? Then I can help you further :)

if 18.40 L of chlorine gas at STP reacts with aluminum metal, how many grams of aluminum chloride are produced?
equation: 3Cl2+2Al-->2AlCl3

Answers

At STP 1mol of gas weighs 22.4L

Moles of chlorine

18.40/22.40.8mol

Now

3mols of chlorine produces 2 mol AlCl_31 mol of chlorine produces 0.6mol AlCl_2

Moles of AlCl_3

0.8(0.6)0.5mol

Mass of AlCl_3

0.5(133)6.5g

A pure sample of a monoprotic acid is dissolved in water. the sample is titrated with sodium hydroxide solution. at the point where 20.0 ml of the naoh solution has been added, the ph is 4.15. the phenolphthalein endpoint of the titration is observed when 50.0 ml of naoh have been added. what is the pka of the acid

Answers

Answer:

21 22 23 24 25 26 27 28 29 30

Explanation:

Check all reasons why a book was used.

it increased pressure on the gas.

it supported additional weights.

it balanced the syringe.

Answers

We can confirm that for the experiments regarding Boyle's law, the book was used to increase pressure on the gas and add additional weight.

Why is the book used in these experiments?

The book is used for the reasons described in options 1 and 2 of the question. The book supports additional weights on the container, meaning that through these added weights we can increase the pressure being applied to the gas and see how said pressure affects the volume of a gas.

Therefore, we can confirm that the book was used to increase pressure on the gas and add additional weight.

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Answer: A, B

Explanation: edge2023

Explain why the available amount of water per person differs between countries

Answers

Answer:

because in the different countries it is distributed unevenly.

Explanation:

hope this helps

There is poverty in many countries. The manufacturing of safe to drink water or the shipping of it may be difficult.

what is the advantege of relase energy in a chemica reaction

Answers

Answer:

A chemical reaction can release chemical energy stored in batteries, natural gas, and even coal. The main advantage of chemical energy is that it is abundant in nature. Chemical energy can be produced by many organic materials.

Hope this helps!!!!!!

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A meteorite is found to contain two isotopes of element X, X-12, and X-14. Experimental analysis determined 95% of the element is isotope X-12, whereas 5% of the element is isotope X-14. What is the average atomic mass of element X?
Select one:

12.0 amu

14.0 amu

12.1 amu

13.0 amu

Answers

Considering the definition of atomic mass, isotopes and atomic mass of an element, the atomic mass of the element is 12.1 amu.

Definition of atomic mass

First of all, the atomic mass (A) is obtained by adding the number of protons and neutrons in a given nucleus of a chemical element.

Definition of isotope

The same chemical element can be made up of different atoms, that is, their atomic numbers are the same, but the number of neutrons is different. These atoms are called isotopes of the element.

Definition of atomic mass

On the other hand, the atomic mass of an element is the weighted average mass of its natural isotopes.

In other words, the atomic masses of chemical elements are usually calculated as the weighted average of the masses of the different isotopes of each element, taking into account the relative abundance of each of them.

Atomic mass of the element in this case

In this case, the first isotope has an atomic mass of 12 amu and a percent natural abundance of 95 %. The second isotope has an atomic mass of 14 amu and a percent natural abundance of 5 %.

Then, the average mass can be calculated as:

12 amu×0.95 + 14 amu×0.05= 12.1 amu

Finally, the atomic mass of the element is 12.1 amu.

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What is the name of this hydrocarbon? a skeletal model has 2 central carbons bonded to c h 3 at each end, and at the left of the 2 central carbons. 3-isopentane 2-methylbutane 3-methylbutane 1,2-methylpropane

Answers

The name of the given hydrocarbon in which 2 central carbon atoms with additional 3 methyl groups is 2-methylbutane.

What are hydrocarbons?

Hydrocarbons are the organic compounds which are made up of by the combination of hydrogen and carbon atoms.

According to the question desired structure is attached below where:

2 and 3 number shows the central carbon atoms which are present in the hydrocarbon.1 and 4 number shows the methyl groups that are attached at each end.One extra methyl group is attach on the left side of 2nd central carbon atoms.

Hence required hydrocarbon is 2-methyl butane.

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Answer:

B. 2-methylbutane

Explanation:

Correct on Edge 2022!!!

Good luck everyone, you got this! Have a great day!

The microscopes used today are just like the ones used by Leeuwenhoek and Hooke. True or false

Answers

Answer:

False

Explanation:

While we do know that A. Leeuwenhoek used a simple microscope that consisted of only 1 lens, Hooke used a compound microscope. Although, after trying a compound microscope, Hooke found out that it strained his eyes and continued to use a simple microscope for his Micrographia.

Thus, we can say that the (compound) microscopes used today are different than the (simple) microscope used by Hooke and Leeuwenhoek.

The second-order rate constant for the decomposition of NO2 (to NO and O2) at 573 K is 0.54 M-1 s-1. Calculate the time for an initial NO2 concentration of 0.20 mol/L to decrease to a) one-half; b) one-sixteenth; c) one-ninth of its initial concentration.

Answers

The rate of second order reaction depends on the change in the concentration of the reactants.

Second order reaction:

A second order reaction is one in which the rate of reaction depends on the concentration of reactants.

For a second order reaction;

1/[A] = kt + 1/[A]o

When concentration deceresases to one-half;

1/0.1 = 0.54t + 1/0.20

1/0.1 - 1/0.20 = 0.54t

10 - 5/0.54 = t

t = 9.3 s

When concentration deceresases to one-sixteenth;

1/0.0125 = 0.54t + 1/0.20

1/0.0125 - 1/0.20 = 0.54t

80 - 5 = 0.54t

t = 80 - 5/0.54

t = 149 s

When concentration deceresases to one-ninth;

1/0.022 = 0.54t + 1/0.20

1/0.022 - 1/0.20 = 0.54t

45 - 5 = 0.54t

t = 45 - 5/0.54

t = 74 s

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If you are given a 0. 32 g piece of sodium metal to react with water, how many moles of hcl would it take to neutralize the sodium hydroxide produced?.

Answers

Answer:

.0139

Explanation:

The number of moles of HCl would take to neutralize the sodium hydroxide produced is equal to 0.0139 moles.

What is a neutralization reaction?

A neutralization reaction can be defined as a chemical reaction in which an acid and base react with each other to prepare salt and water.

When HCl reacts with NaOH and the resulting salt is sodium chloride and water.

HCl + NaOH [tex]\longrightarrow[/tex] NaCl + H₂O

The chemical reaction, chemical reaction of sodium metal and water gives hydrogen gas and sodium hydroxide:

[tex]2Na+ 2H_2O \longrightarrow 2NaOH + H_2[/tex]

Given the amount of sodium metal = 0.32 g

The moles of sodium metal = 0.32/23 = 0.0139 moles

If the 2 moles of sodium produce sodium hydroxide = 2 mol

The 0.0139 moles of sodium will produce NaOH = 0.0139

Therefore, 0.0139 moles of HCl is required to neutralize 0.0139 moles of NaOH.

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Many human epithelial cells produce sticky mucus. Which of the following statements best describes how this mucus functions in nonspecific adaptive immunity?

provides an impenetrable outer covering that cannot be penetrated by most pathogens

assists in the physical removal of pathogens from the body

produces antibodies that will cause pathogen lysis

promotes growth of the body's normal microbiota

Answers

Answer:

The answer is provides an impenetrable outer covering that cannot be penetrated by most pathogens :)

Explanation:

The cells line the skin so then it makes it really difficult for germs to get through. :)

Have an amazing day!!

what is the Acid name for HArO3

Answers

Bro mix acid, i think

Methane (CH4), is said to be the cleanest burning fossil fuel. When burned, it releases carbon dioxide gas and forms water. Using the equation below, determine which of the following is true (assuming there is an infinite supply of oxygen gas (O2)). Select all that apply.

For every 1 molecule of methane CH4 that reacts, 2 molecules of H2O are produced.

For every 2 moles of methane (CH4) that reacts, 2 moles of H2O are produced.

For every 2,000 molecules of methane (CH4) that reacts, 2,000 molecules of H2O are produced.

For every 20 grams of methane (CH4) that reacts, 40 grams of H2O are produced.

For every 200 moles of methane (CH4) that reacts, 400 moles of H2O are produced.

Answers

From the stoichiometry of the balanced reaction equation, the correct statement are;

For every 1 molecule of methane CH4 that reacts, 2 molecules of H2O are produced.For every 20 grams of methane (CH4) that reacts, 40 grams of H2O are produced.For every 200 moles of methane (CH4) that reacts, 400 moles of H2O are produced.

What is combustion?

The term combustion refers to the burning of fossil fuels for the purpose of energy production. The equation for reaction is CH4 + 2O2 ---> CO2 + 2H2O.

Using this equation as shown, the true statements are;

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which word help the reader understand the meaning of stratum in paragraoh 3.

Answers

Answer:

It should be D

Explanation:

Stratum is a layer of rock in the ground

explain how stalacitites and stalagmites are formed

Answers

As the redeposited minerals build up after countless water drops, a stalactite is formed. If the water that drops to the floor of the cave still has some dissolved calcite in it, it can deposit more dissolved calcite there, forming a stalagmite. Speleothems form at varying rates as calcite crystals build up. They are formed from condensation inside a cave, dripping off the ceiling.

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04. a migrating bird can travel at a speed of 10m/s. how far it will travel in 20min at this speed?
Give your answer in meters (m) and in kilometers (km).

Answers

Answer:

12000m & 12km

Explanation:

covert 20mins into seconds.

20 x 60= 1200seconds

distance = speed x time

distance = 10 x 1200

distance = 12000m

1km=1000m

12000/1000= 12km

hope that helps :)

If Thomson’s atomic theory was accurate, what would the results of Rutherford’s gold foil experiment have been?

Answers

Answer:

If Thomson's atomic theory was accurate, the positively charged particles would have gone through the foil.

Which of the following ionic compounds has a transition metal in it?
a. KOH
b. Cs2S
c. CuSO4
d. MgCl2

Answers

Considering that copper occupies Group 11, the ionic compound with a transition metal in it is c. CuSO₄.

What is a transition metal?

A transition metal is any of the set of metallic elements occupying a central block (Groups 3–12) in the periodic table. The differential electron occupies a d subshell.

Which of the following ionic compounds has a transition metal in it?

a. KOH. No, K occupies Group 1.b. Cs₂S. No, Cs occupies Group 1.c. CuSO₄. Yes, Cu occupies Group 11.d. MgCl₂. No, Mg occupies Group 2.

The ionic compound with a transition metal in it is c. CuSO₄.

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According to the first law of thermodynamics, what quantity is conserved?.

Answers

Answer:

energy

Explanation:

The First Law of Thermodynamics (Conservation) states that energy is conserved, it cannot be created nor destroyed.

Vascular plants have an internal transport system to move water and nutrients throughout the plant. Which of these is used to transport water from the roots to the leaves?

Answers

ANSWER : The two primary vascular tissues are xylem, which transports water and dissolved minerals from the roots to the leaves, and phloem, which conducts food from the leaves to all parts of the plant.

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Biotechnology Activity
Now that you are more familiar with the benefits, risks, and impacts of biotechnology, it is time for you to take a stand! Your task is to choose one of the following types of biotechnology: genetic engineering, cloning, or artificial selection.

You will then write a one- to two-paragraph summary describing your chosen type of biotechnology. You will then need to argue for either the benefits or the risks of your chosen type. Your arguments should present your position, and then give the evidence that led you to this position. Be sure to include the following in your argument:

a description of your chosen type of biotechnology (genetic engineering, cloning, or artificial section)
one benefit or one risk for the individual (based on whether you are for or against it)
one benefit or one risk for society (based on whether you are for or against it)
one benefit or one risk for the environment (based on whether you are for or against it)
A picture (you may hand draw, take photos in nature, or use stock images)

Answers

Answer: Ok

Explanation: Explanation:Using recombinant DNA technology to modify an organism's DNA to achieve desirable traits is called genetic engineering. Addition of foreign DNA in the form of recombinant DNA vectors that are generated by molecular cloning is the most common method of genetic engineering.

Select all that apply.

Which items are properties of acids?

soapy

sour

sweet

sharp

possible burns

for 10 points

Answers

Answer:

Sour and Possible Burns

Explanation:

Bases are soapy, not acids.

All acids are sour to taste.

Neither bases nor acids are sweet.

Sharp is a physical trait for things such as knives, not acidic liquids.

Acids can cause burns if handled incorrectly.

4. How does the sun release its heat?

Answers

Answer:

radiation i think

Explanation:

thts why the solar panels can maķe electricity

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