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What is the net force, to the nearest newton, that accelerates the ball?

A) 100 N

B) .000025 N

C) 40,000 N

D) 1000 N​

Explanation:

Hot air balloons work because hot air rises. By heating the air inside the balloon with the burner, it becomes lighter than the cooler air on the outside. This causes the balloon to float upwards, as if it were in water.

In response to the upward buoyant force, the hot air in the balloon rises.

The upward force that an object experiences from the air it displaces is known as air buoyancy.

Here,

Due to the fact that hot air is less dense than cold air of similar volume, the heated air causes the balloon to rise. Hot air balloons and blimps benefit from buoyancy, which is the air's upward force that keeps them in the air.

The wind determines the balloon's flight path, but the temperature of the air inside the envelope can be changed to alter the balloon's altitude. In order to raise the temperature inside the envelope and increase lift, the pilot may open one or more burner blast valves, causing the aircraft to ascend, slow down, or stop its descent.

If the envelope has a vent, the pilot can also open it to let hot air escape, which will lower the temperature inside the envelope and reduce lift, allowing the aircraft to descend or slow down or cease ascending.

If the pilot doesn't take action, the air inside the envelope will gradually cool through seepage or contact with cooler outside air and give less lift.

Hence,

In response to the upward buoyant force, the hot air in the balloon rises.

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Answer:

Convection, or the flow of mantle material transporting heat, drives plate tectonics.

Explanation:

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If the farmer wants the pond to be more sustainable, he has to have a greater diversity of living organisms in the pond.

The term ecosystem means a self supporting unit in which there is an exchange of materials and energy. The ecosystem is expected to be self sustaining.

When the farmer adds young individuals from two species of algae-eating fish to the ponds and plants some reeds around the edge of the pond, if the farmer wants the pond to be more sustainable , he has to have a greater diversity of living organisms in the pond.

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Answer: Having a greater diversity of living organisms in the pond

Explanation:

STAAR, Plato, proof below

Oxygen is participating in non-polar covalent bond(s)

Oxygen forms 2 covalent bond.

This is because oxygen atoms have 6 valence electrons. This means that it has 2 lone pairs and 2 unpaired electrons that are shared in order to achieve octet configuration.

In this chemistry, the 2 lone pairs on the oxygen are not shared with any other atoms. Instead; they are assigned to the oxygen atom. The formal charge on the oxygen atom is zero. Oxygen's atomic number is 8 and is equal to the sum of the number of its valence and inner shell electrons.

Nonpolar covalent bonding is a kind of covalent bond in which the bonding electrons are shared equally between the two atoms.

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If all the reactors are used, the pressure inside the flask will most likely increase to 4 atm.

Atmospheric pressure is a force per unit area exerted by the air in the atmosphere on the Earth's surface. The value of atmospheric pressure above sea level is 1013.25 hPa.

The atmospheric pressure varies from different meteorological factors such as:

According to the above, if all the reactors are used at atmospheric pressure, it will most likely increase.

Note: This question is incomplete because some information is missing. However I can answer it based on my prior knowledge.

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The number of atoms in 1 mg of NaCl = 1 × 10^19 atoms

Atomic mass of Na = 23

Atomic mass of Cl = 35.5

Therefore the molar mass of NaCl = 23 + 35.5 = 58.5g/mol

But 1 mg = 0.001g and 1 mol = 6.022 × 10^ 23

Therefore, If = 58.5g = 6.022 × 10^ 23 atoms

0.001g =X atoms

X atoms = 6.022 × 10^23 × 0.001/58.5

= 0.1 × 10^23 × 10^-³

= 1 × 10^19 atoms

Therefore, the number of atoms in 1 mg of NaCl =1 × 10^19 atoms.

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Answer:

below•

Explanation:

6.1 g total?

I don't really know alot about Chemistry

Answer:

derived unit. noun. a unit of measurement obtained by multiplication or division of the base units of a system without the introduction of numerical factors.

Explanation:

The mole fraction of acetone (C₃H₆O) is 0.333

Mole fraction of a substance can be obtained by using the following formula:

Mole fraction = mole / total mole

With the above formula, we can obtain the mole fraction of C₃H₆O as follow:

Mole fraction = mole / total mole

Mole fraction of C₃H₆O = 0.1 / 0.3

Mole fraction of C₃H₆O = 0.333

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Answer:

Its A

Explanation:

It you look at a wavelength chart, it would show you the rate at which the light travels, from its distance. Which means there has to be two points to calculate it.

The mechanism of chemical reaction is the series of steps

by which chemical reaction follows to for a new substances.

For a new substance to evolve from a chemical reaction, there are some steps that needs to be taken. These steps include:

The study of reaction rate, which is the change in concentration of a reactant or product with time, helps to explain further the mechanism of chemical reaction.

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Answer:

There are 232 calories in the bar

Explanation:

Carbohydrates and protein are both 4 calories per gram, while fat is 9 calories per gram.

[tex]27*4=108\\4*4=16\\12*9=108\\108+108+16=232[/tex]

Using the Michaelis-Menten equation competitive inhibition, the Inhibition constant, Ki of the inhibitor is 53.4 μM.

The Ki of an inhibitor is known as the inhibition constant.

The inhibition is a competitive inhibition as the Vmax is unchanged but Km changes.

Using the Michaelis-Menten equation for inhibition:

Making Ki subject of the formula:

where:

Solving for Ki:

where

[I] = 26.7 μM

Km = 1.0

Kma = (150% × 1 ) + 1 = 2.5

Ki = 26.7 μM/{(2.5/1) - 1)

Ki = 53.4 μM

Therefore, the Inhibition constant, Ki of the inhibitor is 53.4 μM.

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Answer:

you can now deduct which one is greater or smaller and by how much.

Explanation:

no of moles= mass/molar mass

1ai) 0.4 = m/ ( 12 + (16*2)

m= 0.4* 44

m= 17.6g

ii) 0.6= m/( 2*1 + 16)

m= 0.6 *18

m= 10.8g

b) 0.135 = m/ ( 2*1 +32 + (16*4)

m= 0.135* 98

m= 13.23g

ii) 0.5= m/ (1+35.5)

m= 0.5*36.5

m= 18.25g

2. Avogadro's Number = 6.02×10²³

1 mol of any element= 6.02×10²³ particles

a) 0.1 mol of H20= (6.02×10²³) * 0.1

= 6.02×10²² molecules

ii) 0.3 mol of CO2= (6.02×10²³) * 0.3

= 1.806 × 10²³ molecules

Ans: 0.3 mol of CO2

bi) 0.25 mol of HCl= (6.02×10²³) * 0.25

= 1.505 × 10²³ molecules

bii) - find the no of moles first:

no of moles= mass/molar mass

n= 3.4g/ 34g →mr of H2S in g=2+32= 34g

n= 0.l mol

- use the Avogadro Number.

0.1 mol of H20= (6.02×10²³) * 0.1

= 6.02×10²² molecules.

biii) here you're given the density, use it to find the mass of acetic acid.

ρ = 1049 g/ml

ρ = m/v, where v=5 ml

1049 = m/ 5

m= ρ*v

m= 1049*5

m= 5245 g

• convert this into moles.

mr of CH3COOH= 12 + 3+ 12+ 16+ 16+ 1

= 60

mr in g = 60g

n= m/mr

n= 5245/ 60

n= 87. 41666...

n= 87.4 moles

•using Avogadro's Number:

87.4 moles of acetic acid=(6.02×10²³)*87.4

= 2.25148* 10²⁵

= 2.25 * 10²⁵ molecules

thus, the ans for this is 5 ml of acetic acid.

How many chiral stereoisomers can be drawn for CH3CHFCHFCH(CH3)2?

Answer:

(a) Molar mass of ca= 40g/mol

(b) O2= 16 * 2 = 32g/mol

Answer:

A polymer is any of a class of natural or synthetic substances composed of very large molecules, called macromolecules, which are multiples of simpler chemical units.  Polymers make up many of the materials in living organisms and are the basis of many minerals.

Explanation:

Explanation:

The first man-made polymers were actually modified versions of these natural polymers. Celluloid, the stuff from which silent-movie film was made, was a plastic created from chemically modified cellulose. The first completely synthetic polymer (that is, made by people through chemical synthesis), invented in the early years of the twentieth century, was Bakelite: a plastic made by reacting phenol and formaldehyde under pressure at high temperatures.

# be careful #

The name of an aqueous solution of  [tex]H_{2}S[/tex] is "hydrogen sulfide solution" or "sulfhydric acid solution."

It is a chemical formula which represents the compound hydrogen sulfide, which consists of two hydrogen atoms bonded to a sulfur atom. When [tex]H_{2} S[/tex] dissolves in water ([tex]H_{2}O[/tex]), forms an aqueous solution.

The naming for acid solutions is based on the corresponding acid's name. Here, H2S is an acid called sulfurous acid. The -ous suffix is used to refer to an acid derived from a non-oxygen-containing anion, here, the sulfide anion (S2-). When  acid is dissolved in water, the resulting solution is called as "sulfurous acid solution."

Therefore, the name for an aqueous solution of H2S is "sulfurous acid solution."

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Answer:

the elephant toothpaste would go everywhere

Refer to the attachment not letting me add answer

Answer: Photosynthesis

Explanation:

The process of photosynthesis is used to help make food for plants. The inputs are sunlight, water (H2O), and carbon dioxide (CO2). Then the outputs are glucose (C6H12O6) which is food, and oxygen (O2) is released.

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Answer:

760 mm of Hg

Explanation:

If the gases A , B and C are non reacting , then according to Dalton's Law of Partial Pressure the total pressure exerted is equal to sum of individual partial pressure of the gases .

If there are n , number of gases then ,

[tex] P_{total}= P_1+P_2+P_3+\dots +P_n[/tex]

Here ,

Hence the total pressure exerted is ,

[tex] P_{total}= P_{Gas\ A }+P_{Gas\ B }+P_{Gas\ C }[/tex]

Substitute ,

[tex]P_{total}=( 400 + 220 + 140 )mm\ of \ Hg [/tex]

Add ,

[tex]P_{total}= 760\ mm\ of \ Hg[/tex]

Hence the total pressure exerted by the gases is 760 mm of Hg.

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Answer: It means

Oxyhydrogen

Explanation:  Each water molecule is made of two hydrogen atoms and one oxygen atom, thus there are two H atoms and one O.

Answer:

Explanation:

Element Name - Actinium

Symbol - AC

Electronegativity - 1.1

It is a Rare Silvery- white metal that's highly radio active

Answer:

➢ Oxygen exists as a diatomic molecule in nature when it is not combined with any other element. It forms O2 molecule because it is stable when it is uncombined. ... By achieving octet configuration, the diatomic elements become more stable compared to the single atom. Therefore, oxygen and hydrogen are diatomic.

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Answer:

More reactive - Sodium and potassium

Less reactive - Aluminum, Manganese and Zinc

Answer:

Explanation:

Here we need to state two metals that are more reactive than Magnesium and three metals which are less reactive than Magnesium using the Reactivity series .

The Reactivity series goes like ,

K > Na > Ca > Mg > Al > Zn > Fe > Ni > Sb > Pb > H > Cu > Hg > Ag > Au > Pt

So from this we see that , Pottasium (K) , Sodium (Na) and Calcium (Ca) are more reactive than Magnesium and Aluminium (Al) , Zinc (Zn) and Iron (Fe) are less reactive than Magnesium .

So that ,

→ Two more reactive metals= K and Na

→ Three less reactive metals = Al , Zn and Fe

I hope this helps .

Considering the definition of empirical formula,  the empirical formula is Cd₁C₂H₃O₂= CdC₂H₃O₂.

The empirical formula is the simplest expression to represent a chemical compound, which indicates the elements that are present and the minimum proportion in whole numbers that exist between its atoms, that is, the subscripts of chemical formulas are reduced to the most integers. small as possible.

You know that a compound is made up of 168.2 g Cd, 35.96 g C, 4.53 g H, and 47.91 g O.

Then it is possible to calculate the number of moles of each atom in the molecule, taking into account the corresponding molar mass:

Cd: [tex]\frac{168.2 g}{112.4 \frac{g}{mole} } =[/tex] 1.496 moles

C: [tex]\frac{35.96 g}{12 \frac{g}{mole} } =[/tex] 2.997 moles

H: [tex]\frac{4.53 g}{1 \frac{g}{mole} } =[/tex] 4.53 moles

O: [tex]\frac{47.91 g}{16 \frac{g}{mole} } =[/tex] 2.994 moles

The empirical formula must be expressed using whole number relationships, for this the numbers of moles are divided by the smallest result of those obtained. In this case:

Cd: [tex]\frac{1.496 moles}{1.496 moles } =[/tex] 1

C: [tex]\frac{2.997 moles}{1.496 moles } =[/tex] 2

H: [tex]\frac{4.53 moles}{1.496 moles } =[/tex] 3.02≅ 3

O: [tex]\frac{2.994 moles}{1.496 moles } =[/tex] 2

Therefore the Cd: C: H: O mole ratio is 1: 2: 3: 2.

Finally, the empirical formula is Cd₁C₂H₃O₂= CdC₂H₃O₂.

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Answer:

heated the water

Explanation: