HELP PLS Asap Why do slimmer objects go faster than things with more structure (use scientific terminology)

Answer:

d. positron

that's the answer brainly tells me I need to write at least 20 characters and that's d u m b.

Answer:

gas X

Explanation:

The equilibrium constant, which indicates how far a chemical process progresses, is a thermodynamic quantity.

The equilibrium constant is a ratio of the concentrations (or partial pressures) of the products to the concentrations (or partial pressures) of the reactants.

1) The equilibrium constant is;

Keq = 1/(3.5) * (1.5)^2

Keq = 0.13

2) 0.15 = [0.25]/1 * [CO2]

[CO2] = [0.25]/0.15

[CO2] =1.67

3) Ksp = [Mg^+] [Cl^-]^2

4 * 10^-2 = [Mg^+] *  [3.5 * 10^-3]^2

[Mg^+] = 4 * 10^-2/ [3.5 * 10^-3]^2

= 3.3 * 10^-5 M

4) Ksp = x^2

Ksp = (2 * 10^-3)^2

= 4 * 10^-6

Learn more about equilibrium constant:https://brainly.com/question/10038290

#SPJ1

Answer:

The answer is Cementation

Explanation:

option A..................................,

Fe(OH)2 doesn't react with water. Fe(OH)2 is said to have a solubility constant that ranges from 8x10-16 to 2x10-15.

Fe(OH)2 is significantly more soluble than Fe(OH)3, which has a solubility constant in the range of 10-38.

Fe(OH)2 is incredibly insoluble when compared to NaCl (Ksp of roughly 4x101!!! ).

Consequently, perspective is key.

The aqueous solution numbers are in the morning. In the early history of the earth (the "oxygen catastrophe"), the numbers for Fe(II) and Fe(III) were extremely important.

They shouldn't be directly compared because the three solubility products have different dimensions (officially, Fe(OH)3 splits into four ions, Fe(OH)2 splits into three, and NaCl splits into two). However, because of how far apart they are, the morning conclusions remain valid.

For more information on solubility kindly visit to

https://brainly.com/question/28170449

#SPJ9

Step 1

The reaction involved:

CO + 2 H2 → CH3OH (completed and balanced)

------------

Step 2

Data provided:

19.7 g H2 (the limiting reactant)

Excess reactant = CO

144.5 g CH3OH = actual yield

----

Data needed:

The molar masses of:

H2) 2.00 g/mol

CH3OH) 32.0 g/mol

-----------

Step 3

The theoretical yield:

By stoichiometry,

CO + 2 H2 → CH3OH (The molar rate between H2 and CH3OH = 2:1)

2 x 2.00 g H2 --------- 32.0 g CH3OH

19.7 g H2 --------- X

X = 19.7 g H2 x 32.0 g CH3OH/2 x 2.00 g H2

X = 157.6 g CH3OH (The theoretical yield)

-----------

Step 4

The % yield is defined as follows:

Answer: d. 93% (it is the nearest value in comparison to my result)

The number of moles of the product is obtained as 27.0 mol of Mn\(O_{2}\).

The theoretical yield tells us about the amount of the substance that could be obtained from the stoichiometry of the reaction. We must recall that the bedrock of all the stoichiometric calculations that we have to carry out in all of our study of chemistry has to be based or in fact predicated on the fact that we are able to identify or formulate or get the correct and balanced chemical reaction equation.

In this case we have the reaction; \(Mn(s)+O_{2}(g) ------ > MnO_{2} (s)\)

Number of moles of manganese = 27.0 mol

Number of  moles of oxygen molecule =  42.8 mol

If the reaction is one is to one as we can see in the reaction equation, it then follows that manganese is the limiting reactant here in the equation.

Now;

The number of moles of the product is obtained as 27.0 mol of Mn\(O_{2}\).

Learn more about theoretical yield:https://brainly.com/question/14966377

#SPJ1

Missing parts;

For the reaction \(Mn(s)+O_{2}(g) ------ > MnO_{2} (s)\) compute the theoretical yield of product (in moles) for the following initial amounts of reactants.  27.0 mol Mn and 42.8 mol \(O_{2}\) Express your answer using THREE significant figures.

Answer:

Carbonothioyl dibromide, also known as CBr2S, has a bond angle of approximately 109.5 degrees, which is the typical tetrahedral bond angle for molecules with sp3 hybridization.

The molecular shape of CBr2S is also tetrahedral, with the two bromine atoms and the sulfur atom arranged at the corners of a tetrahedron, and the carbon atom at the center.

The pH of acid is between 0-7 on pH scale while for base pH range is from 7-14. Therefore, the pH of 1.0 x 10⁻³ M of solution is 7.002. pH is a unitless quantity. Therefore, pH of acid is 1.88 and pOH of base is 12.12.

pH is a measurement of amount of hydronium ion H₃O⁺ in a given sample. More the value of hydronium ion concentration, more will be the solution acidic.

On subtracting pH from 14, we get pOH which measures the concentration of hydroxide ion in a given solution. pH depend on the temperature. At room temperature pH scale is between 0 to 14. pH of neutral solution is 7.

LiOH + HCl \(\rightarrow\) LiCl + H\(_2\)O

moles of Lithium =7 grams÷6.941 g/mol

                           =1.00mole

total volume of solution = 7 liters + 0.5L

                                        = 7.5l

concentration of HCl =1.00/7.5l=0.13mol/l

pH=-log [OH⁻ ]

substituting the values

pH=-log 0.13

pH=1.88

pOH= 14-pH

      = 14-1.88

      =12.12

Therefore, pH of acid is 1.88 and pOH of base is 12.12.

To learn more about pH, here:

https://brainly.com/question/27945512

#SPJ1

Step 1 - Understanding what happens when a reaction reaches equilibrium

When a reaction reaches equilibrium, the concentration of reactants and products will not vary anymore. That doesn't mean the concentration of reactants will be equal to that of products. It won't. At least, not necessarily. It may be, but it may not as well.

What actually happens when equilibrium is reached is that both reactions - the direct and the reverse one - are happening with the same velocity, i.e., their rate of reaction is the same, and that's why neither the concentration of reactants nor products vary.

As soon as a new molecule of product is produced, another molecule of product is reacting back to produce the reactants once again.

Step 2 - Choosing the right alternative

The right alternative therefore is the rate for the forward and reverse reactions are the same.

Answer: the rate for the forward and reverse reactions are the same

Answer:

bulb or pump, meniscus, outside

Explanation:

In order to use a pipet, place a BULB OR PUMP at the top of the pipet. Use this object to fill the pipet such that the MENISCUS of the liquid is even with the volume line. Release the liquid, touching the tip of the pipet to the side of the container if necessary to release the last drop OUTSIDE the pipet tip.

The organic product formed in the reaction shown in the image would be bromoethane.

Alkanes, such as ethane undergoes a substitution reaction with halogens such as bromine to produce haloethanes.

For example, the equation of the reaction between ethane and bromine water is as below:

\(C_2H_6 + Br_2 --- > C_2H_5Br + HBr\)

The products formed are bromoethane and hydrobromic acid.

More on substitution reactions in alkanes can be found here: https://brainly.com/question/16811879

#SPJ1

Answer:

Archery

Explanation:

Archery is scored based on point values assigned to the rings on the target.

Percent of gold and copper are 88.2 and 11.8

Red gold is a gold-copper alloy used to make jewelry .

Let the mass  of gold be m1

Let the mass of copper be m2

We are given that m1+m2 =8.97 g

We know that volume is the ratio of mass to density

Thus

m1/d1  + m2/d2 = 0.528 cm3

where d1 and d2 is the density of gold and copper

m1/19.3 + m2/8.96 = 0.528

8.96m1 +19.3 m2 = 0.528 x 19.3 x 8.96 = 91.305

putting m1 = 8.97 - m2

8.96 ( 8.97 - m2 ) + 19.3 m2 = 91.305

80.3712 - 8.96m2 + 19.3 m2 =91.305

10.34 m2 = 91.305-80.3712

m2 = 10.9338 /10.34

      =1.0537gm

m1=8.97-1.0537

    =7.91gm

Therefore, percent of gold = 7.91/8.97 x 100 =88.20%

                 percent of copper = 100-88.2=11.8%

Therefore, percent of gold and copper are 88.2 and 11.8

For further reference:

https://brainly.com/question/18712497?referrer=searchResults

#SPJ9

Answer:

Electrons

Electric charge is carried by subatomic particles such as electrons and protons, which can be created and destroyed. For example, when particles are destroyed, equal numbers of positive and negative charges are destroyed, keeping the net amount of charge unchanged.

For Test One, phenotype ratio is Short fur : Long fur = 2 : 0; For Test Two, the phenotype ratio is Short fur : Long fur = 3 : 1; For Test Three, the phenotype ratios will be Short fur : Long fur = 0 : 2

For Test One:

Parent 1: FF (homozygous dominant for short fur)

Parent 2: Ff (heterozygous for short fur)

The Punnett square for this cross will give the following genotype ratios:

FF : Ff = 1 : 1

And the corresponding phenotype ratios will be:

Short fur : Long fur = 2 : 0 or 100% short fur

For Test Two:

Parent 1: Ff (heterozygous for short fur)

Parent 2: Ff (heterozygous for short fur)

The Punnett square for this cross will give the following genotype ratios:

FF : Ff : ff = 1 : 2 : 1

And the corresponding phenotype ratios will be:

Short fur : Long fur = 3 : 1 or 75% short fur and 25% long fur

For Test Three:

Parent 1: ff (homozygous recessive for long fur)

Parent 2: ff (homozygous recessive for long fur)

The Punnett square for this cross will give the following genotype ratios:

ff : ff = 1 : 0

And the corresponding phenotype ratios will be:

Short fur : Long fur = 0 : 2 or 100% long fur

For this investigation, the test variable is the breed of hamster and the outcome variable is the phenotype of the hamster.

Learn more about heredity at: https://brainly.com/question/930755

#SPJ1

Answer:

ΔG = -8.812 kJ/mol

Explanation:

To obtain the free energy of a reaction you can use the expression:

ΔG = ΔG° + RT ln Q

Where:

ΔG° is Standard Gibbs Free energy: -16.7kJ/mol = -16700J/mol

R is gas constant: 8.314472 J/molK

T is absolute temperature (37°C + 273.15 = 310.15K)

And Q is reaction quotient: 21.3

Replacing in the formula:

ΔG = ΔG° + RT ln Q

ΔG = -16700J/mol + 8.314472J/molK*310.15K ln 21.3

ΔG = -8812.4J/mol

Answer:

Are produced by division of another cell.

Contain cytoplasm.

Are the smallest unit of living matter.

Contain DNA.

Explanation:

Living cells are classed as either prokaryotic or eukaryotic. Which of the following characteristic(s) identify both cell types, eukaryotic cells and prokaryotic cells?

Benzene has a combustion energy of -3.11 kJ/g.

The balanced formula for benzene combustion is

\(6CO_2 + 3H_2O from C_6H_6 + 15O_2\)

We may use the stoichiometric ratio of benzene to oxygen, 1:15, to calculate how much oxygen is necessary to burn 0.500 g of benzene:

O2:15 moles:1 mole \(C_6H_6\)

0.000476 moles C6H6: 0.00714 moles \(O_2\).

3266 kJ/mol of energy is released during the combustion of one mole of benzene. The energy produced as a result of burning 0.000476 moles of benzene is:

E = 3266 kJ/mol 0.000476 moles.

ΔE = -1.556 kJ

determine how much energy the water has absorbed:

q = m × c × ΔT

According to the preceding question, if the water's beginning temperature is 25.0°C and its end temperature is 36.2°C, the temperature change is:

ΔT = 36.2°C - 25.0°C

ΔT = 11.2°C

Now that the values have been substituted, we can determine how much heat the water has absorbed:

250.0 g, 4.184 J/g, 11.2°C, and q

q = 11,126.4 J

The combustion energy per gramme of benzene may then be calculated by converting the units of E to kJ/g as follows:

ΔE = -1.556 kJ / 0.500 g

ΔE = -3.11 kJ/g

to know more about combustion energy (ΔE) here;

brainly.com/question/15117038

#SPJ1

The combustion energy of benzene is -3.11 kJ/g.

What is  Combustion Energy?

The energy released when a specific quantity of a substance burns entirely in oxygen is known as the heat of combustion of the substance.

Calculation-

1 mole of O2 in 15 moles

0.00714 moles: 0.000476 moles of C6H6.

The form of the energy is:

E is 3266 kJ per mole, or 0.000476 moles.

ΔE = -1.556 kJ

tally up the energy that the water has absorbed:

q = m × c × ΔT

The shift in temperature is:

ΔT = 36.2°C - 25.0°C

ΔT = 11.2°C

How much heat the water has absorbed can be calculated:

4.184 J/g, 11.2 °C, 250.0 g, and q

q = 11,126.4 J

By changing the units of E to kJ/g, it is possible to compute the combustion energy per gramme as follows:

ΔE = -1.556 kJ / 0.500 g

ΔE = -3.11 kJ/g

Click here to learn more about Combustion Energy :

brainly.com/question/15117038

#SPJ1

An experiment occurs when we want to study the relationship between the dependent and the independent variable. We know that the independent variable is the variable that is manipulated in the experiment and the dependent variable variable is the variable that undergoes a change as we change the independent variable.

It must be known that an experiment is the only way that we could be able to establish a cause and effect relationship. In other words, the results of an experiment tell us categorically if the effect owes to a supposed cause as was captured in the hypothesis of the experiment.

In this case we have the following in this experiment;

The independent variable is the use or absence of the test guide

The dependent variable is the overall performance in the academic year

The control group is the group that did not use the test guides

The experimental group is the group that used the test guides

The constants are the method of instruction, the structure of the test and the difficulty of the test.

Learn more about experiments:https://brainly.com/question/11256472

#SPJ1

Missing parts;

The local high school recently passed a rule reducing how much teachers can count homework as part of a student's grade. Consequently, a larger portion of the students stop doing their homework. A teacher there decides to conduct an experiment. All of his classes get an optional "test guide" to help them study for their tests. He allows two classes to use the "test guides" (that they must fill in and complete) on their exams. He hypothesizes that students will complete the test guides and learning will occur from filling them out. In his other 2 classes, the teacher does not allow students to use test guides on the exam, and consequently very few of them filled them out. After the 2017-2018 year is over, he wants to compare scores between the 4 classes on the final exam to see if allowing students to use test guides during each test throughout the year improved their later overall performance.

Independent Variable: _____________________________ Dependent Variable: ___________________________________

Experimental Group: _______________________________ Control Group: _________________________________________

3 constants: ______________________________________________________

Answer:

your teeth will rot so will your lungs

Answer:

one obvious negative aspect of smoking cigarette is lung cancer.

Explanation:

Smoking can cause your internal organs to dry up and just kill you after you have smoked too many, It get's really bad and I have myself seen people's lung organ's since my mom is a doctor she tells me not to smoke or drink alcohol once I have become a full grown man, Partly because it's embarrassing to be a doctor and not have a healthy son.

Answer:

The speed of light is the speed at which light travels. No, an object cannot move at the speed of light.  

Explanation:

The speed of light is 186,000 miles per second. An object with mass cannot move at the speed of light since it would take an infinite amount of energy to achieve that velocity, since only massless particles can travel at the speed of light. Also, you would have to factor in air friction, meaning even if an object were to reach such high speeds, it would instantly disintegrate.

Answer:

13.6 m

Explanation:

To find the wavelength, you need to use the following equation:

c = λ · f

In this equation,

-----> c = speed of light (3.0 x 10⁸ m/s)

-----> λ = wavelength (m)

-----> f = frequency (Hz)

You can plug the given values (speed of light and frequency) into the equation and then solve for "λ".

c = λ · f                                                        <----- Equation

(3.0 x 10⁸ m/s) = λ · (2.20 x 10⁷ Hz)           <----- Insert values

13.6 = λ                                                      <----- Divide both sides by 2.20 x 10⁷

Answer:

Constructive interference is when two waves interact causing larger waves because the crest will meet a crest or a trough will meet a trough which adds the waves together changing the size of the amplitude.

Destructive interference is when two waves interact causing smaller waves because the crest will meet a trough or a trough will meet a crest which subtracts the waves together changing the size of the amplitude.

Answer:

Answer. Mass of object is 8.16 kg (or 8 kg if g = 10 m/s²)

Explanation:

One way to calculate mass: Mass = volume × density. Weight is the measure of the gravitational force acting on a mass. The SI unit of mass is "kilogram". The SI unit of weight is Newton (N).

When NaCl is added to water, it undergoes dissociation, that is, the ions Na+ and Cl- dissociate.

The equation of this reaction is:

NaCl + H2O --> Na+ + Cl- + OH- + H+

Hello, this is Bing. I can help you with your question. Based on the information I found on the web, **H2** can be broken down into its two atoms of hydrogen (H) by supplying enough energy to overcome the bond that holds them together⁴. This process is called **dissociation** and requires an energy equal to or greater than the **dissociation energy** of H2, which is about 436 kJ/mol⁴.

One way to break down H2 is by using **electricity** to split water (H2O) into hydrogen (H2) and oxygen (O2) through a process called **electrolysis**¹. In this process, water is decomposed into its elements by passing an electric current through it. The electric current is provided by a battery or another source of electricity and the water needs to have an **electrolyte**, such as salt or acid, added to it to make it conductive¹. Two electrodes, usually made of metal or other conductive material, are inserted into the water and connected to the battery. The electrode connected to the positive terminal of the battery is called the **anode** and the one connected to the negative terminal is called the **cathode**¹. When the electric current flows through the water, hydrogen gas bubbles form at the cathode and oxygen gas bubbles form at the anode¹. The overall chemical reaction for electrolysis of water is:

2 H2O → 2 H2 + O2

Another way to break down H2 is by using **heat** to cause a reaction between hydrogen and oxygen that produces water and releases a large amount of energy. This reaction is called **combustion** or **oxidation** and can be ignited by a spark or a flame³. The reaction is very fast and explosive and can be dangerous if not controlled. The overall chemical reaction for combustion of hydrogen is:

2 H2 + O2 → 2 H2O

I hope this helps you understand how H2 can be broken down and what methods are used to do so.

Answer:

All of the children will have hair.

Explanation:

Since the Father has Dominant genes, for having hair, and the mother having recessive genes, for not having hair, the Dominant genes override the recessive, making the children have hair.