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Answer:

85.6 g

Explanation:

Step 1: Write the balanced combustion equation

C₃H₈ + 5 O₂ ⇒ 3 CO₂ + 4 H₂O

Step 2: Calculate the moles corresponding to 140 g of H₂O

The molar mass of H₂O is 18.02 g/mol.

140 g × 1 mol/18.02 g = 7.77 mol

Step 3: Calculate the moles of C₃H₈ needed to produce 7.77 moles of H₂O

The molar ratio of C₃H₈ to H₂O is 1:4. The moles of C₃H₈ needed are 1/4 × 7.77 mol = 1.94 mol.

Step 4: Calculate the mass corresponding to 1.94 moles of C₃H₈

The molar mass of C₃H₈ is 44.10 g/mol.

1.94 mol × 44.10 g/mol = 85.6 g

Answer:

C. It would stay the same

Explanation:

PLATO answer

Answer:

1 on each compound there

Explanation:

A balanced reaction is a reaction that has the same number of atoms in the reactants and products. If this number is not the same, we need to balance it putting some numbers as coefficients behind the compound or element that needs to be balanced, For example:

NH₃ ------> N₂ + H₂

As you can see in this reaction, we have 1 nitrogen and 3 hydrogens in the reactants, and in the side of products we have 2 of each element. This needs to be balanced. To do this we put a number as coeffcient to balance the atoms. In this case, we can put a number 2 behind the NH₃, so the number of atoms of nitrogen becomes 2:

2NH₃ ------> N₂ + H₂

But this 2, changes the number of hydrogens, we now have 6 (cause 2 * 3 = 6), so, let's balance hydrogen on the products to be 6, putting a 3:

2NH₃ ------> N₂ + 3H₂

Now, the reaction is balanced in each side of the reaction.

Applying the same principle to the reaction of this exercise we have the following:

NaCl(aq) + AgNO₃(aq) ---------> AgCl(s) + NaNO₃(aq)

As you can see, we have the same number of atoms on each side:

Na: 1;    Cl: 1;    Ag: 1;  N: 1;  O: 3

So we don't need to balance this reaction, with just putting the number 1 or none, is perfectly balanced.

Hope this helps

Answer:

option c. 4,1,2

Explanation:

No. of atoms of each element in reactant is equal to that of products

Answer:

-4

Explanation:

The number of atoms in Mg wpuld be one atom

Answer: 1.11 g/mL

Explanation:

Density = mass/vol

mass 123.0194-120.3621g = 2.6574

vol 6.518-4.126 ml = 2.392

Answer:

Produce CO2 = Both

Produces oxygen = Both

Use CO2 in photosynthesis = Both

Use O2 in cellular respiration = Both

Hope this helps! :)

Answer:

[tex]n_{KClO_3}=0.0353molKClO_3[/tex]

Explanation:

Hello!

In this case, according to the experiment, we first realize that the pressure of oxygen is:

[tex]p_{O_2}=1.00atm-26.0/760 atm=0.966atm[/tex]

Next, we compute the moles based off the ideal gas law:

[tex]PV=nRT\\\\n=\frac{PV}{RT}=\frac{0.966atm*1.35L}{0.08206\frac{atm*L}{mol*K}*300K}=0.0530molO_2[/tex]

Thus, since there is 3:2 mole ratio between oxygen and potassium chlorate, we can compute the consumed moles of the latter as shown below:

[tex]n_{KClO_3}=0.0530molO_2*\frac{2molKClO_3}{3molO_2} \\\\n_{KClO_3}=0.0353molKClO_3[/tex]

Best regards!

Answer:

Alkane

Explanation:

Alkane is a class of organic compounds that contain only carbon and hydrogen and the carbon atoms are connected to each other by single bonds.

Now, if we look at the molecule whose condensed structural formula is shown in the question, we will notice that the compound can only contain single bonds. That is, the molecule is a saturated hydrocarbon(alkane).

I have drawn out the full structure of the compound to illustrate this point.

Answer: American red squirrel

Explanation:

The American red squirrel is the smallest squirrel. The color of the fur may vary from season to season. The color of the squirrel can also vary depending of the environment in which it lives. In summer the black stripe appears on the sides over the white fur. It has a backbone and like other mammals nurses the offsprings. It has a bushy tail. It is a native of North America. Red fur appear on the back and white on the belly. Strong claws, strong muscles, and compact body are other key features of the squirrel.

Answer:

The 2.8 hrs one i think???

hope this helps

Explanation:

Answer:

[tex]d=2.15g/mL[/tex]

Explanation:

Hello there!

In this case, since the density of the metal is computed as shown below:

[tex]d=\frac{m}{V}[/tex]

We need to calculate the volume of the solid by subtracting the final volume and the initial volume of water:

[tex]V=54.10mL-45.50mL\\\\V=8.60mL[/tex]

Thus, we obtain:

[tex]d=\frac{18.5g}{8.60mL}\\\\d=2.15g/mL[/tex]

Best regards!

Answer:

Explanation:

physical substance in general, as distinct from mind and spirit; (in physics) that which occupies space and possesses rest mass, especially as distinct from energy.

Answer:

Anything that takes up space.

Explanation:

Anything that has both volume and mass.

Answer:

1. If an organism has high biological fitness in one habitat, this does not mean it will have high fitness in another. This is because organisms adapt accordingly to their environment. Therefore, since there is variability among habitats, this does not guarantee that the organism will always have high biological fitness.

2. Natural selection produces changes in populations. Individual organisms are directly impacted by it, as it determines their survival rate, but the only genetic changes would occur in a population.

3. If there are no organisms with varying traits in a population, they will likely go extinct after a major environmental change. This is because natural selection will remove all organisms who are unable to survive in the new environment. If the population does not have the variability to survive this, then they will go extinct.

If an organism has a high biological fitness in one habitat, then it doesn't guarantee a high biological fitness in a different habitat; natural selection does change the individual. The population will go extinct if the individuals can't reproduce.

The individual that lives in an ecosystem can change itself due to natural selection, as natural selection favors the individuals who can survive in the changing environment, and the change in the environment induces the change in the organism. There is no reproductive success if the organisms are reproductively isolated within the population.

Hence, if an organism has a high biological fitness in one habitat, it doesn't guarantee a high biological fitness in a different habitat; natural selection does change the individual. The population will go extinct if the individuals can't reproduce.

Learn more about the natural selection process here.

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Answer:

Option c is the answer....

Answer:

Yes

Explanation:

One of the top goals of genetic engineering is the improvement of health. Imagine a world without the threat of AIDS or cancer. Those working in the genetics field hope that manipulating the genes of humans will one day enable science to prevent people from contracting these potentially deadly diseases.

Answer:

1. solid

2. liquid

3. plasma

4. gas

Those are the four parts of matter.

Explanation:

I hope this helps.

Answer:

AgCl formula for silver(l) chloride

Answer:

The mole is simply a very large number that is used by chemists as a unit of measurement.

Explanation:

The mole is simply a very large number,

6.022

×

10

23

, that has a special property. If I have

6.022

×

10

23

hydrogen atoms, I have a mass of 1 gram of hydrogen atoms . If I have

6.022

×

10

23

H

2

molecules, I have a mass of 2 gram of hydrogen molecules. If I have

6.022

×

10

23

C

atoms, I have (approximately!) 12 grams.

The mole is thus the link between the micro world of atoms and molecules, and the macro world of grams and litres, the which we can easily measure by mass or volume. The masses for a mole of each element are given on the periodic table as the atomic weight. So, if have 12 g of

C

, I know, fairly precisely, how many atoms of carbon I have. Given this quantity, I know how many molecules of

O

2

are required to react with the

C

, which I could measure by mass or by volume.

Answer:

Low power

Explanation:

Low power would allow for the full image of the red blood cells and would appear as small circles.

Answer:

All magnets have north and south poles. Opposite poles are attracted to each other, while the same poles repel each other. When you rub a piece of iron along a magnet, the north-seeking poles of the atoms in the iron line up in the same direction.

Magnets exert magnetic force as a result of magnetic field attraction between opposite poles and magnetic field repulsion between same poles.

Magnets are the substance in which north and south poles present and they show attraction towards the different poles and repulsion towards the same pole.

Due to presence of this poles magnets have their own magnetic field and direction of this field governs from north to south pole. Due to this magnetic field magnets exert magnetic force towards some metals like iron and show attraction.

Hence, due to presence of different poles in a magnet, they exerts  magnetic force.

To know more about Magnets, visit the below link:

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Answer:

Explanation:

²⁴²₉₅Am  ⇒  ₉₆²⁴²Cm + ₋ ₁e .

The product nucleus is Curium .

Answer:

Explanation:

I tried to figure it out but my head wasn’t working sorry

Answer:

Explanation: The answer is B. Because meiosis process produce genetically different, haploid cells. Also, meiosis basically happen to produce gametes. Gametes is haploid. So, the answer is B

Meiosis is a method for cell division taking place in some organisms. In meiosis the cell the cells produced at the end of meiosis contain half the number of chromosomes as the parent cell. Hence, option C is correct.

meiosis is biological process by which the cell undergo division to produce genetically identical daughter cells. Other methods of cell divisions include mitosis, binary division, budding etc.

The first stage of meiosis includes pairing homologous chromosomes and they segregate to opposite ends of the meiotic spindle.This phase is known as reduction division where, the number of chromosome reduces to half.

This differentiated chromatids separates out in the second phase and yielding the haploid cells. Hence, in meiosis, the cells produced at the end of meiosis contain half the number of chromosomes as the parent cell.

To find more on meiosis, refer here:

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Answer:

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Answer:

what is your zoom email

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Answer:

= 3.456 × 1011

Explanation: