12
Select the correct locations on the table.
The table shows the changes in velocity for several different cars. Each change takes place over a 10-second interval. Which cars are either
speeding up or slowing down?
Starting Velocity
Ending Velocity
Car A
30 km/h
30 km/h
Car B
0 km/h
20 km/h
Car C
30 km/h
0 km/h
Car D
0 km/h
0 km/h
Car E
20 km/h
30 km/h

Answer:

CCI2

Explanation:

Answer:

V = 9

Explanation:

n = 0.410

T = 47.0C (must be convert to K by + 273.15) = 320.15 K

P = 1.20 atm

R = 0.08205

V = ?

To solve this equation, we must follow the equation below:

PV = nRT

1.20 x V = 0.410 x 0.08205 x 320.15 K

1.20 x V = 10.8

V = 9

So the answer is 9.

Answer: 3.002 ==> C

Explanation:

3.00183 =

3.00183 =3.002 => since 8 is closer to 10 than to 0, add 1 to the 1 in 3.00183

3.002 ==> C

To produce 1000 kg of fishmeal (M = 1000 kg), you would need 3000 kg of pasta. To determine the amount of pasta required to produce 1000 kg of fishmeal, we need to consider the mass balance of the process. Let's break down the steps involved:

A. Extraction of fish oil:

The pasta obtained from the extraction stage contains 20% flour and 80% water. To calculate the amount of pasta, we need to determine the mass of flour and water in the pasta. Let's assume the total mass of the pasta is P kg.

Mass of flour = 20% of P = 0.2P kg

Mass of water = 80% of P = 0.8P kg

b. Drying of pasta:

During the drying stage, the pasta is dried in a rotary drum, resulting in fishmeal with 40% humidity. This means that the final fishmeal will contain 60% dry matter.

Let's assume the mass of the dried fishmeal is M kg.

Mass of dry matter = 60% of M = 0.6M kg

Since the dry matter in the fishmeal comes from the flour in the pasta, we can equate the mass of dry matter to the mass of flour:

0.6M kg = 0.2P kg

To produce 1000 kg of fishmeal, we want to find the corresponding value of P:

0.6M = 0.2P

P = (0.6M) / 0.2

P = 3M

Therefore, to produce 1000 kg of fishmeal (M = 1000 kg), you would need 3000 kg of pasta.

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The volume of the gas at STP = 35.01 L

Conditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure).

In general, the gas equation can be written  

\(\large {\boxed {\bold {PV = nRT}}}\)

where  

P = pressure, atm  

V = volume, liter  

n = number of moles  

R = gas constant = 0.08206 L.atm / mol K  

T = temperature, Kelvin  

V=17.4 L

T = 23 + 273 = 296 K

P = 2.18 atm

\(\tt mol=n=\dfrac{PV}{RT}\\\\n=\dfrac{2.18\times 17.4}{0.082\times 296}\\\\n=1.563\)

The volume of the gas occupy at STP :

\(\tt 1.563\times 22.4=35.01~L\)

To calculate the amount of calcium hypochlorite needed, we need to consider the volume of water in the pipeline and the desired concentration of chlorine.

First, we need to convert the pipeline length from feet to gallons since the concentration is given in milligrams per liter (mg/L). Assuming the pipeline has a uniform cross-sectional area, we can use the formula: volume = area × length.

The cross-sectional area of a 24-inch pipeline can be calculated using the formula: area = π × (radius)^2. Since the radius is half of the diameter, the radius of a 24-inch pipeline is 12 inches.

Converting inches to feet, the radius is 1 foot. So the cross-sectional area of the pipeline is π × (1 ft)^2 = π square feet.

Next, we multiply the cross-sectional area by the length of the pipeline to get the volume in gallons. Since 1 gallon is equal to 3.78541 liters, we can convert the volume to liters.

Now, we have the volume of water in liters. To find the amount of calcium hypochlorite needed, we multiply the volume by the desired concentration of 50 mg/L.

Finally, since the calcium hypochlorite contains 65% chlorine, we need to consider the chlorine content when calculating the amount of chemical required. We divide the desired concentration by the chlorine content (65%) and convert the result to pounds.

The calculated amount will be the pounds of calcium hypochlorite needed to achieve the desired chlorine concentration in the pipeline.

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The net ionic equation for the given reaction is as follows: Ba2+ + CO32- -> BaCO3.

The given total ionic equation is as follows: Ba2+ + 2NO3- + 2Na+ + CO32- → BaCO3 + 2Na+ + 2NO3-. The first step to finding the net ionic equation is to write the balanced molecular equation. The balanced molecular equation is given below: Ba(NO3)2 + Na2CO3 → BaCO3 + 2NaNO3.

The next step is to write the total ionic equation, where all the ions that participate in the reaction are written in their ionic forms. Ba2+ + 2NO3- + 2Na+ + CO32- → BaCO3 + 2Na+ + 2NO3-The last step is to cancel out the spectator ions that appear on both sides of the equation. The spectator ions are Na+ and NO3-.The resulting net ionic equation is as follows: Ba2+ + CO32- → BaCO3.

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Answer:

98.8g (3 s.f.)

Explanation:

Use the mole = mass/mr equation to find the moles of CaO, then use the molar ratio to find the moles of Fe2O3, which is the same as CaO, (assuming the ratio is 1:1, as you haven't stated it clearly in the question). Then use the equation and input to find Mass, which is 98.8g to 3 s.f.

Answer:

B 16

Explanation:

the atomicnumber =protons of the atom =electrons do keep in mind that they are charged negatief

Based on the observations described, it is likely that the white solid is a true hydrate.

Water droplets on the side of the test tube: When heating a hydrate, the water molecules trapped within the crystal lattice are released as vapor. The presence of water droplets on the side of the test tube indicates that water was indeed released during the heating process.

Brownish residue: The brownish residue obtained after heating the solid suggests that the white solid might contain a transition metal ion. Transition metal ions can form complex compounds that exhibit different colors, including brown.

Dissolving in water: The brownish residue dissolves in water, indicating that it is soluble in the solvent.

Dark reddish-brown solution: The solution obtained after dissolving the brownish residue is described as dark reddish-brown. This color could be attributed to the formation of a complex compound between the transition metal ion in the residue and the water or other substances present in the solution.

Based on the observations of water droplets upon heating, the brownish residue that dissolves in water, and the resulting dark reddish-brown solution, it is likely that the white solid is a true hydrate.

The presence of water droplets and the dissolution of the residue suggest that water was released from the solid during heating, indicating the presence of water molecules within the crystal lattice.

The color change to brownish and the subsequent dark reddish-brown solution point towards the involvement of a transition metal ion, possibly forming a complex compound.

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The pH of the blood plasma sample is 6.1.

The solution of carbonic acid and bicarbonate is a buffer solution. In buffer solution is a mixture of a weak base or acid and its conjugate salt. Resisting change in pH is one of the properties of a buffer system.

The concentration of carbon dioxide = 25.6 mM

The concentration of bicarbonate concentration =

24.4 mM

Pa of the carbonic acid = 6.1

The pH of the blood plasma sample with a total carbon dioxide of 25.6 mM and a bicarbonate concentration of 24.4 mM.

\(pH = pK _{a} + log \frac{[ HCO]}{[ H _{2}CO _{3} ]}\)

\(pH = 6.1 + log \frac{[24.4]}{[25.6 ]}\)

pH = 6.1 + log (0.953)

pH = 6.1 - 0.209

pH = 6.1

The pH of the blood plasma sample with a total carbon dioxide of 25.6 mM and bicarbonate concentration of 24.4 mM is 6.1.

Therefore, the pH is 6.1.

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Explanation:

pressure decrease and collision decreases

The volume of concentrated aqueous ammonia must be diluted to 1.00 l to make a solution that has a molarity of 1.85 m. concentrated nh3 (aq) is 15 m. report the volume of concentrated aqueous ammonia in milliliters is 123 mL

The number of moles of solute must always remain constant while diluting solutions, which is the most crucial thing to remember.

In other words, the amount of solute in the concentrated sample must be identical to the amount of solute in the diluted solution.

The concentration is the number of moles per unit volume. So

c=n/V

n=CV

n= 1.85x1

n=1.85

Now your task is to determine what volume of the concentrated solution would contain this many moles of ammonia.

Plugging the values, we get

V=1.85/15

V=0.123 L

Now for dilution calculations, we have

C1V1=C2V2

V1=C2/C1.V2

V1=1.85/15x1.00= 123 mL

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Answer:

B. X

Explanation:

Answer:

The answer is D

Explanation:

Wave W is being diffracted, Wave X is being reflected, and waves Y and Z are being refracted.

Answer:

ingestion, propulsion, mechanical breakdown, chemical digestion, absorption, and elimination.

Explanation:

Answer: to release waste and process the needed materials used for the construction, maintenance, and healing of the body.

Explanation: In food there are certain things that our body needs such as protein, our body chemically and physically breaks down the nutrients our body needs. Our body also needs a way to get rid of what we don't need through the excretory system.

Answer:

we need to see the diagram

Explanation:

Answer:c

Explanation: the proportions of components can vary

Answer:

those small sediments begin to precipitate, condense on the ground and finally settle.

Explanation:

Sedimentation is a natural process, which occurs spontaneously in nature and promotes the formation of sedimentary rocks.

Seawater taken from an area with a large, growing plant population has high O2 and low nutrient content.

The presence of a large plant population in a body of water affects the content of oxygen and nutrients. Oxygen production increases when there is a greater amount of photosynthesis taking place, which occurs when there is a large population of plants.

The increase in oxygen levels in turn results in a decrease in nutrient content since many of these nutrients are utilized during the process of photosynthesis. Alternatively, the other options such as low CO2 and high nutrient content, low O2 and low nutrient content, high O2 and high CO2 content, none of these is correct are incorrect.

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Answer:

Explanation:

Here, we want to check if the equation of the reaction is balanced or not

Now, for a balanced equation of reaction, the number of atoms of the individual elements on both sides of the equation is equal

Now, let us check the atoms:

We have 1 Sr on both sides

We have 1 SO4 on both sides

We have 1 Mg on both sides

We have 2 OH on both sides

From what we can see, the equation of the reaction is balanced

Thus, the correct answer choice is B

The actual free energy change for the reaction a b at 37 °C when △Go' = -15 kJ/mol, [a] = 10mm, and [b] = 0.1 mm is -26.522 kJ/mol

It can be calculated using the equation △G = △Go' + RTlnQ, where R is the gas constant, T is the temperature in Kelvin, and Q is the reaction quotient.

First, we need to convert the temperature from Celsius to Kelvin: 37 °C + 273.15 = 310.15 K

Next, we need to calculate the reaction quotient Q: Q = [b]/[a] = 0.1/10 = 0.01

Now we can plug in the values into the equation:

△G = -15 kJ/mol + (8.314 J/mol·K)(310.15 K)ln(0.01)

△G = -15 kJ/mol + (2578.6 J/mol)ln(0.01)

△G = -15 kJ/mol + (-11.522 kJ/mol)

△G = -26.522 kJ/mol

Therefore, the actual free energy change for the reaction is -26.522 kJ/mol.

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To form a dipeptide between Alanine and Leucine, we have to join the carboxyl group (COOH) of Alanine with the amino group (NH₂) of Leucine via a peptide bond. The resulting molecule will have a zwitterionic form. The zwitterionic form of the dipeptide will have both a positive and a negative charge.

A dipeptide is a molecule made up of two amino acid residues joined together via a peptide bond. A peptide bond is a bond between the amino group (NH₂) of one amino acid and the carboxyl group (COOH) of another amino acid. Amino acids are the building blocks of proteins. Alanine and Leucine are two of the twenty common amino acids found in nature.

A zwitterion is a molecule that has a positive charge on one part of the molecule and a negative charge on another part of the molecule. Zwitterions are electrically neutral overall. They are formed when a molecule that has both acidic and basic functional groups is dissolved in a solvent. The acidic and basic groups react with each other to form a neutral molecule that has both positive and negative charges. The zwitterionic form of an amino acid is the form that is found in proteins.

The chemical formula for Alanine is C₃H₇NO₂, and the chemical formula for Leucine is C₆H₁₃NO₂. To form a dipeptide between Alanine and Leucine, we have to join the carboxyl group (COOH) of Alanine with the amino group (NH₂) of Leucine via a peptide bond. The resulting molecule will have a zwitterionic form. The zwitterionic form of the dipeptide will have both a positive and a negative charge.

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Answer:

"2.Orbital." I think

Explanation:

Risk*

A. Fe3+. This is because Fe3+ has a higher charge than Ca2+ and Na+, which means it has a stronger attraction to the water molecules and therefore causes more disruption to the water's ability to vaporize.

Additionally, the concentration of Fe3+ ions would need to be much lower than Ca2+ and Na+ ions to have the same effect on the boiling point of water due to its higher charge.
The boiling point elevation depends on the number of ions present in the solution. In this case, if all ions have equal concentration, Fe3+ (A) will contribute most to elevating the boiling point of H₂O, because it has the highest charge and will produce more ions when dissolved in water.

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Based on the lab values provided, the answer would be D. The patient has been immunized against hepatitis B as indicated by the presence of HBsAB.

The absence of HBsAg and HBcAb suggest that the patient has not had a recent or current infection with hepatitis B. It is important to note that these lab values should be interpreted by a health care provider in the context of the patient's medical history and any additional lab or clinical findings.

HBcAb (-) means the patient does not have antibodies for the hepatitis B core antigen, suggesting no past infection. These results suggest that the patient has been immunized against hepatitis B.

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Interpreting these lab values for a 40-year-old patient with the given terms:

HBsAg (-), HBsAB(+), HBcAb(-)

a. the pt had hepatitis
b. the pt has hepatitis
c. the pt should consider immunization
d. the pt has been immunized

Your answer: d. the pt has been immunized.

HBsAg (Hepatitis B surface antigen) is negative, which indicates the patient does not have an active Hepatitis B infection.
HBsAB (Hepatitis B surface antibody) is positive, which suggests that the patient has developed immunity to Hepatitis B, either from previous exposure or immunization.
HBcAb (Hepatitis B core antibody) is negative, which means the patient has never been exposed to Hepatitis B.

Therefore, the interpretation of these lab values suggests that the patient has been immunized against Hepatitis B.

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Answer: The entire container because gases will expand to fill it.

Explanation:

the mass number of fluorine (F) is 19

C. 19

Answer:

Matter is any substance that has mass and takes up space. Any physical object consists of matter. It doesn't matter whether it's an atom, element, compound, or mixture. It's all matter. (Not a pun, i promise ツ)

However, unlike some believe, not everything you encounter in the world is matter. Matter can be converted into energy, which has neither mass nor volume. So, light, sound, and heat are not matter. Most objects have both matter and some form of energy, so the distinction can be tricky. For example, a candle flame certainly emits energy (light and heat), but it also contains gasses and soot, so it is still matter. The building blocks of matter are called "atoms" and "molecules." They, too, are matter. The matter we can detect normally is called "baryonic" matter. However, there is another type of matter out there, which can't be directly detected. But its influence can. It's called dark matter.

Attached below is a picture of examples of matter.

Key words and phrases:

matter, heat, light, dark matter, baryonic matter, sound, energy, mass, volume, space, physical

Hope this helps! Brainliest would be much appreciated! Have a great day! :)

Answer:

it is called land of (extreme)

Explanation:

Answer:

It changed by -7 degrees Celsius.

Explanation:

it became 6 degree celcius more