a person uses a force of 27 n to hold a stationary trash can a distance of .5 above the ground. how much work is done on the garbage can?

Answer:

I guess D ...,...,.....

Yes, it is critical for your tap water to be a good buffer as it is for the water at the nearest lake to be a good buffer.

This is because the tap water is the water coming from the nearest lake so it should also be a good buffer just like the nearest lake so we can conclude that it is critical for your tap water to be a good buffer as it is for the water at the nearest lake to be a good buffer.

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Answer:

The order for the Linnaean classification system is:

Species, Genus, Family, Order, Class, Phylum, Kingdom, Domain

Answer:

Rock

Explanation:

There is a carbon cycle that scientists have studied that shows how carbon is reused in an ecosystem so carbon is not the answer.

There is a hydrogen cycle that scientists have studied that shows how hydrogen is exchanged between biotic and abiotic sources.

There is no rock cycle

There is a water cycle that has been studied by scientists that shows the movement of water within the earth and the atmosphere

The answer is Rock

The molarity of the solution is 2.5 M

From the question, we are to determine the molarity of the solution

Using the formula,

[tex]Molarity = \frac{Number\ of\ moles}{Volume}[/tex]

From the given information

Number of moles = 2.5 moles

Volume = 1.0 L

Then,

[tex]Molarity = \frac{2.5}{1.0}[/tex]

Molarity = 2.5 M

Hence, the molarity of the solution is 2.5 M

Here is the complete question:

What is the molarity of 2.5 mol KCL in 1.0 L of solution

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Answer:

Ca+Fe(No3)2 —> Fe+Ca(No3)2

Explanation:

This reaction is already balanced, you can tell because if you add up all the numbers that are on each side you get the same number. (3+2=2+3)

Answer:

life of leaf and leaf is obob

Answer:

11 grams of hydrogen and 89 grams of oxygen

Explanation:

Answer:

The multiplier is 3

Explanation:

For this problem, we need to find an integer for the number of moles of oxygen. Let's see the results by multiplying 2.33 and 2, 3, 4:

2.33 mol · 2 = 4.66 moles.

2.33 mol · 3 = 6.99 moles ≈ 7 moles.

2.33 mol · 4 = 9.32 moles.

You can note that if we multiply 2.33 moles by three (3), we obtain an integer of the number of moles.

Answer:

A,C,D

Explanation:

I TOOK THE TEST

Answer:

it would be the second option. It responds to stimuli to help protect an organism and maintain structure

Answer:

it is the second one

Explanation:

i took the test

Answer:

The answer is 16 as the coefficient

Explanation:

I hope this helps

Look at the reaction

More than 1mol of HC2H3O2 is required so the mols will be doubled atleast

Now

NaHCO_3 is less

In the given query, the limiting reagent in provided chemical reaction is: [tex]\rm NaHCO_3(s) + HC_2H_3O_2(aq) \rightarrow C_2H_3O_2Na(aq) +H_2CO_3(aq)+ H_2O(l) +CO_2(g)[/tex] is [tex]\rm HC_2H_3O_2[/tex].

In a reaction, limiting reagent is a chemical substance that is completed used or is totally consumed resulting into limiting the formation of further products.

In the provided reaction:

[tex]\rm NaHCO_3(s) + HC_2H_3O_2(aq) \rightarrow C_2H_3O_2Na(aq) +H_2CO_3(aq)+ H_2O(l) +CO_2(g)[/tex]

Given: 0.00516 mol [tex]\rm HC_2H_3O_2[/tex] and 0.00585 mol [tex]\rm NaHCO_3[/tex].

Using balanced equation, the stoichiometric ratio of  [tex]\rm HC_2H_3O_2[/tex] to  [tex]\rm NaHCO_3[/tex] is 1:1. Meaning that, for every 1 mole of  [tex]\rm HC_2H_3O_2[/tex], we need 1 mole of  [tex]\rm NaHCO_3[/tex].

Therefore, the number of moles of  [tex]\rm NaHCO_3[/tex] needed to react with 0.00516 mol of  [tex]\rm HC_2H_3O_2[/tex] is:

0.00516 mol  [tex]\rm HC_2H_3O_2[/tex] × (1 mol  [tex]\rm NaHCO_3[/tex]/ 1 mol  [tex]\rm HC_2H_3O_2[/tex])

= 0.00516 mol [tex]\rm NaHCO_3[/tex].

Since we have 0.00585 mol of [tex]\rm NaHCO_3[/tex], which is greater than the amount needed (0.00516 mol), [tex]\rm NaHCO_3[/tex] is not the limiting reactant.

Calculate the number of moles of [tex]\rm HC_2H_3O_2[/tex]needed to react with 0.00585 mol of [tex]\rm NaHCO_3[/tex]:

0.00585 mol [tex]\rm NaHCO_3[/tex] × (1 mol [tex]\rm HC_2H_3O_2[/tex]/ 1 mol  [tex]\rm NaHCO_3[/tex]) = 0.00585 mol  [tex]\rm HC_2H_3O_2[/tex]

As we see, only 0.00516 mol of  [tex]\rm HC_2H_3O_2[/tex] are present, which is less than the amount needed (0.00585 mol),  [tex]\rm HC_2H_3O_2[/tex] is the limiting reactant.

Therefore,  [tex]\rm HC_2H_3O_2[/tex]is the limiting reactant in the provided chemical reaction.

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Answer:

The answer is ligament

Explanation:

Hope that helps!

Answer:

mg

Explanation:

there are 2.05 moles mg and 2.05 moles hcl

MM Mg = 24 g/mol

MM HCl = 36.5 g/mol

mol Mg = 50 : 24 = 2.083

mol HCl = 75 : 36.5 = 2.055

moles of reaction: divide the moles of each reactant by its corresponding coefficient in the balanced equation.

Mg : HCl = 2.083/1 : 2.055/2 = 2.083 : 1.028

HCl is the limiting reactant because it gives the fewest moles of reaction.

Answer:

first is cloud computing second is moores law third is biocomputing and the last one is quantum computing

Explanation:

The use of biological components like DNA to retrieve, process, and store data in the anticipated next generation of technologies that are expected to drastically increase processing capabilities are not possible.

DNA has a property by which it can replicate that si why said to be self-replicating material and always present in all living organisms few of them which cannot take but almost all.

DNA is the main constituent of chromosomes which is responsible to carry genetic information to the next generation and which cannot be used in computers as it is a natural thing controlled by nature only.

Therefore, the use of biological components like DNA to retrieve, process, and store data in the anticipated next generation of technologies that are expected to drastically increase processing capabilities are not possible.

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Explanation:

Tectonic plate motion only occurs when the core of the planet is molten. If the planet does not have a magnetic field, then that means the core is frozen. If the core is frozen, then there is no plate motion

Answer:

D. When you want a quick summary of the experiment

Explanation:

Answer:

I'm pretty sure the answer is D

Explanation:

Typically with primary sources - there is a lot of detail and secondary sources generally lack some of the key details. This is why I believe D to be right because it would be just a quick summary and a few details.

I hope this helps you :)

For a 300.0g sample of glass at 76.0C  placed in a large calorimeter containing 1000.0g of water,  the specific heat of the glass and the percent error in this value are mathematically given as

C= 0.211 cal / g

% E = 5.5%

Generally, the equation for the  balanced heat on glass is mathematically given as

Mg* SH of glass *dT of glass = Mwater * SH of water * dT of water

Therefore

300 * C * (76 - 27) = 1000 * 1 * (27 - 23.9)

C = 1000 * 3.1 / (300 * 49)

C= 0.211 cal / g

In conclusion,The precent error is

% E = (0.211 - 0.2) * 100 / 0.2

% E = 5.5%

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Answer:

i think the answer is 12.0

Explanation 2Al2O3(s)-->4Al(s)+302(g)What is the total number of moles of O2 that are produced when 8.0 mol of Al2O3(s)are totally decomposed ? 

Answer:

0.2553669915026199 BaSO4

Explanation:

hi, give brainliest?

The molarity of the solution is equal to 0.500M.

To calculate the molarity of a solution, one must use the value of the amount of moles and the volume, so that:

                                                 [tex]M = \frac{mol}{v}[/tex]

So, applying the values ​​given in the question we have:

                                         [tex]M = \frac{1mol}{2L}[/tex]

                                       [tex]M = 0.5mol/L[/tex]

So, the molarity of the solution is equal to 0.500M.

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Answer:

yes

Explanation: Our DNA determines how many muscle fibers a person is born with. This number never changes cause one can't make more muscle fibers during their lifetime. With more muscle fibers, one has the potential to be stronger.

It is an acquired trait because you could train your muscles to become bigger. When you train, for example resistance training, your muscle produces more myofilaments which increases their diameter. This is why you develop large muscles when you train.

Answer:

D it's because we hot same question in my module and my teacher said I'm right

Answer:

3.09 moles C3H8 8.22 moles C3H8 1.03moles C3H8 6.58moles C3H8 9.73moles C3H3

One mole of every substance contains 6.02×10²³ atoms. The no.of moles of C₃H₈ containing 4.95×10²⁴ hydrogen atoms is 1.02 moles.

A substance which contains 6.02×10²³ atoms is called one mole of that substance.  C₃H₈ contains 8 hydrogens. The atomic mass of hydrogen is 1.008 g.

The number of hydrogen atoms in one mole of C₃H₈ = 1.008× 6.02×10²³

= 4.85×10²⁴  hydrogen atoms.

Thus the no.of moles of C₃H₈ that contains 4.95×10²⁴ hydrogen atoms is calculated as follows:

(4.95×10²⁴× 1)/4.85×10²⁴ = 1.02 moles.

Therefore, 1.02 moles of C₃H₈ contains 4.95×10²⁴ hydrogen atoms.

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Answer:

See below

Explanation:

Most of the elements found on earth are metals. A look at the periodic table shows that these elements occupy the entire left-hand stretch of the table, from the main group, through the transition metals, lanthanides, actinides, alkali and alkaline earth elements. One element included here, hydrogen, is rarely classified as a metal. On earth, hydrogen is a gas, and it is usually classified as a non-metal, like oxygen and nitrogen. However, at very low temperatures and very high pressures, hydrogen is a solid, and under the right conditions it is expected to behave more like a metal. It is thought that gas giants, such as Jupiter and Saturn in our solar system, may have metallic hydrogen cores. Metallic elements are not generally found as single atoms. Instead, the atoms in an element such as iron cluster together to make a larger structure. The materials formed in this way have some similar properties. Metals are shiny. Metals are malleable; they can be bent and formed into different shapes (at least when heated). Metals are good conductors of electricity. In metals, large groups of atoms cluster together. Metal atoms form large, extended arrays, with the atoms repeating in specific patterns throughout the solid.

The properties of metals are really important. The fact that metals are malleable allows them to be formed into sheets that can be used to make cars, airplanes, railway lines, cargo containers and ships, as well as more delicate items such as jewelry and surgical tools. A related property, ductility, allows metals to be stretched into long, thin wires. Together with the conductivity of metals, this property allows transmission lines to carry electricity from generating stations to people like you. Sometimes, the source of electricity is hundreds of miles away; electricity used to power a laptop in New York may come from places like La Grande Baleine or James Bay, in northwestern Quebec. Some of these properties can be understood by thinking about the structure of metallic elements. A great deal of our structural understanding of metals and other materials comes from x-ray diffraction studies. A very focused beam of x-rays can be sent into a material, where they will bounce off the atoms and scatter in different directions. The outcome sounds chaotic, but if the solid is highly organized, the x-rays behave in very predictable ways. The result is an x-ray diffraction pattern. A diffraction pattern is a little like the pattern of ripples on a pond when a stone is thrown into calm water. The pattern can be studied and decoded mathematically to find the locations of the atoms within the material. X-ray diffraction can reveal the atomic-level structures of highly ordered materials such as metals. What does x-ray diffraction tell us? Evidently, a chunk of metal is not just a mass of atoms stuck together randomly. Instead, the atoms arrange themselves in neat layers in very specific ways. These layers of atoms sit on top of each other to form a three-dimensional solid. One of the properties that results from this organized arrangement of atoms is the malleability of metals. If you take a nice, soft metal such as copper, after annealing it in a fire or oven, it can be bent and shaped easily. With copper, this can be done even after the metal has cooled to room temperature. When you bend the copper, you are actually causing layers of atoms to slide over each other, until you stop bending and they come to rest in a new location. If you have ever done this, you'll know that the more you work with the copper, the harder it is to bend. That's because while you are sliding layers of atoms back and forth, occasionally an atom (or an entire row of atoms) slips out of place. It is no longer part of a smooth layer, and so other atoms can't slide past it as easily. This situation is called a defect. Once there are enough defects in the metal, it is impossible to bend the material anymore. Metal atoms are found in organized layers. Because these layers can roll over each other, metals can be worked into different shapes.