Lions and cheetahs live in the same area and both eat they same type of prey. Which type of competition occurs between a lion and a cheetah?
intraspecific
predator-prey
interspecific
mutualism

Answer:

I think it's A and D

Explanation:

I'm not sure if it's right

Answer:

The answer is B and D

Explanation:

trust fr

Explanation:

When calculating the equilibrium constant expression we don't include pure solids or liquids because their concentrations stay constant during the reaction. Since their concentrations don't change significantly throughout the reaction (if enough is present) they don't affect the equilibrium so we don't include them in the ksp formula.

Answer: because the concentration of a purid solid remains constant during the reaction.

Answer:

The Sun looks bigger than other stars because its more closer to the earth than the stars.the farther anything is distant from us the tinier it will look

Explanation:

plz mark brainliest if thats ok|?

The chemiacl reaction given:

We are given that the reaction:

Is second order reaction

Have a rate constant = 0.0265M-1min-1

Initial concentration of A = 2.50 M

time = 180.0 mins

We want the concentration of A after 180.0 minutes.

For the second order reaction, we use the following equation to calculate conentrattion (integrated rate law).

[A]t is the concentration of A at time t

[A]o is the initial concentration (at time = 0)

k is the rate constant for the reaction

Now lets plug in the values.

Answer:

\(0.004058 = 40.58 \times {10}^{ - 4} \\ thank \: yo\)

Answer:

it let them know what lived before them besides their old, dead grandpas

Explanation:

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Answer:

It let us know what came before us, what the past was like, and gave them a little idea of what happened.

Explanation:

A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulae, wherein the reactant entities are given on the left-hand side and the product entities on the right-hand side with a plus sign between the entities in both the reactants and the products and an arrow that points towards the products, and shows the direction of the reaction. The coefficients next to the symbols and formulae of entities are the absolute values of the stoichiometric numbers. The first chemical equation was diagrammed by Jeen Beguin in 1615.

A chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and plus and minus signs.

Hope this helps you!

Answer:

Explanation:

In 4.38 × 10^21 molecules of water, there are approximately 0.073 moles.

To calculate the number of moles, we can use Avogadro's number, which states that 1 mole of a substance contains 6.022 × 10^23 molecules. So, by dividing the given number of molecules (4.38 × 10^21) by Avogadro's number, we can find the number of moles.

Now, let's explain the process in detail. Avogadro's number is a constant that represents the number of particles (atoms, molecules, etc.) in one mole of a substance. It is approximately 6.022 × 10^23. Therefore, if we divide the given number of molecules by Avogadro's number, we can determine the number of moles.

In this case, we divide 4.38 × 10^21 molecules by 6.022 × 10^23 molecules/mole, resulting in approximately 0.073 moles.

Significant figures play an important role in reporting the answer. The given number of molecules has three significant figures (4, 3, and 8), so our answer should be reported with three significant figures as well. Therefore, the number of moles is approximately 0.073.

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we would need 2625.13 grams (or 2.62513 kilograms) of NaCl.

To calculate the mass of NaCl required to produce a 26.4 mol/L solution with a 1.7 L volume, we need to use the formula that relates the mass of solute, moles of solute, and molarity:Molarity (M) = moles of solute / liters of solution Rearranging this formula, we get:moles of solute = Molarity (M) x liters of solutionWe can use this formula to find the moles of NaCl needed:moles of NaCl = 26.4 mol/L x 1.7 L = 44.88 molNow, we can use the molar mass of NaCl to convert from moles to grams. The molar mass of NaCl is 58.44 g/mol:mass of NaCl = moles of NaCl x molar mass of NaClmass of NaCl = 44.88 mol x 58.44 g/mol = 2625.13 gTo produce a 26.4 mol/L solution with a 1.7 L volume.

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Answer:

uhhh D  .-.

Explanation:

Answer:C

Explanation:

Answer:

Voltage is the measure of electric potential energy per unit charge, current is the flow of electric charge through a circuit, and resistance is the property of a material that opposes the flow of electric current.

Ohm's Law relates these three concepts by stating that current is directly proportional to voltage and inversely proportional to resistance.

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The reaction of a substance with oxygen called combustion.

What is a Chemical reaction?

A mechanism that significantly directs the chemical transformation of one group of chemical substances or molecules into another may be referred to as a chemical reaction. Numerous catalysts are used in this chemical transformation process to speed up the reaction.

Therefore, the reaction of a substance with oxygen called combustion.

3. We refer to the molecules before and after a chemical reaction, respectively, as reactants and products.

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The compound that contains the atom with the highest oxidation number is CrO₃ (option E).

Oxidation number is the hypothetical charge of an atom within a molecule or compound.

The oxidation number of an atom or ion determines the subscript given to the other elements in the molecule.

According to this question;

Therefore, it can be said that the molecule that posseses the atom with the highest oxidation number is CrO₃.

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Answer:

56.96 grams

Explanation:

To find the mass of 1.78 moles of O2, we need to use the molar mass of O2, which is the mass of one mole of O2.

The chemical formula for O2 is O-O or simply O2. The molar mass of O2 is the sum of the atomic masses of two oxygen atoms, which can be found on the periodic table.

The atomic mass of oxygen (O) is approximately 16.00 g/mol. So the molar mass of O2 is:

Molar mass of O2 = 2 x atomic mass of O

= 2 x 16.00 g/mol

= 32.00 g/mol

Therefore, the mass of 1.78 moles of O2 is:

Mass = number of moles × molar mass

= 1.78 mol × 32.00 g/mol

= 56.96 g

So the mass of 1.78 moles of O2 is 56.96 grams.

Answer:

the average speed of \(V_{av} CO_2\) is 5.24 ×  104 cm/s

Explanation:

The computation of the average speed of a \(CO_2\) is as follows:

\(\sqrt{average} = \sqrt{\frac{8 RT}{\pi M} }\)

where,

M = Molar mass

\(V_{av} = \frac{\sqrt{1}}{M}\)

Given that

\(V_{av} \ of\ oxygen= 6.14 \times 10^4 cm/s\)

The molar mass of oxygen i.e. (MO_2) = 31.9988 g/mol

And, the molar mass of CO_2 is  44.0098 g/mol

Now

\(\frac{V_{av} CO_2}{V_{av} O_2} = \frac{\sqrt{M_{O2} }}{M_{CO2}}\)

Now place these values to the above formula

\(\frac{V_{av}CO_2}{6.14\times 104 cm/s} = \frac{\sqrt{31.9988} }{44.0098}\)

So,

V_av CO_2 is 5.24 ×  104 cm/s

hence, the average speed of \(V_{av} CO_2\) is 5.24 ×  104 cm/s

Considering the reaction stoichiometry, the total number of moles of NO produced from 0.25 moles of O₂ is 0.2 moles.

The balanced reaction is:

4 NH₃ + 5 O₂ → 4 NO + 6 H₂O

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

Then you can apply the following rule of three: if by stoichiometry 5 moles of O₂ produce 4 moles of NO, 0.25 moles of O₂ will produce how many moles of NO?

\(amount of moles of NO= \frac{0.25 moles of O_{2} x4 moles of NO}{5 moles of O_{2} }\)

amount of moles of NO= 0.2 moles

Finally, the total number of moles of NO produced from 0.25 moles of O₂ is 0.2 moles.

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Answer: c

Explanation:   Filtration is technically defined as the process of separating suspended solid matter from a liquid

Pulp is a lignocellulosic fibrous material prepared by chemically or mechanically separating cellulose fibers from wood, fiber crops .

Many commercial juices are filtered to remove fiber or pulp.

The correct answer is C, Pulp.

Orange is an example of a citrus fruit. Every citrus fruit has a pulp. The of pulp a citrus fruit is that stringy content in the endocarp of the fruit .

The pulp of a citrus fruit is where its juice is found.

When you want to prepare orange juice, you need to remove the pulp of the citrus fruit. This is done by filtering out the pulp from the juice.

Filtration is the process of removing larger particles. For a liquid juice, filtration is the process of removing solid particles from the orange juice.

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Review and analyze the data recorded during the experiment to draw conclusions and better understand the types of  physical and  chemical changes that occurred.

Step 1: Organize your data in a table format in your lab notebook or the space provided.
Step 2: Record the initial material, Calcium carbonate.
Step 3: When Calcium carbonate reacts with hydrochloric acid, the changes observed would be the formation of bubbles and fizzing. This is a chemical change due to the formation of a new substance, calcium chloride, and the release of carbon dioxide gas.
Step 4: For water, there is no reaction observed. This step represents a physical change, as water does not alter the chemical composition of the other materials.
Step 5: When Copper sulfate pentahydrate is added to water, the change observed is the dissolution of the solid into the water, forming a blue solution. This is a physical change because the chemical composition of the copper sulfate remains the same.
Step 6: When Iron filings and sulfur are mixed together, no observable change occurs. This is a physical change since the individual substances are not chemically reacting.
Step 7: When Lead nitrate reacts with potassium iodide, a yellow precipitate (Lead iodide) forms. This is a chemical change due to the formation of new substances.
Step 8: When Magnesium reacts with hydrochloric acid, the change observed is the formation of bubbles and the disappearance of the magnesium. This is a chemical change due to the formation of magnesium chloride and the release of hydrogen gas.
Step 9: When a candle is burned, the change observed is the flame and the production of heat and light. This is a chemical change as new substances are formed, such as carbon dioxide and water vapor.
Remember to review and analyze the data recorded during the experiment to draw conclusions and better understand the types of changes (physical or chemical) that occurred.

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Explanation:

hdhehdbrhdns dhdjdjdhrjs dhfirjr rudjdbe dbdud d

Answer:

Matter can change from one state to another if heated or cooled. If ice (a solid) is heated it changes to water (a liquid). This change is called MELTING. If water is heated, it changes to steam (a gas).

Explanation:

Answer: F, O, N, C, B

Explanation: The element with the greatest electronegativity will have the smallest radius because it holds the electrons closest to the nucleus. Fluorine is the most electronegative element (it is in the upper right of the periodic table), Francium is the lease (it is the lower left of the periodic table). With this knowledge, you should be able to recognize a trend in the periodic table associated with atomic radius size and electronegativity.

For any component: Proton count equals atomic number

Number of protons plus number of electrons equals the atomic number.

The number of neutrons is equal to the atomic number-mass number.

The quantity of protons in an element's atom is known as the atomic number. The atomic number of krypton in our illustration is 36. This indicates that the nucleus of a ruthenium atom contains 36 protons.

Every atom of ruthenium has 44 protons, which is intriguing. A Ruthenium atom cannot exist if it does not have 44 protons. A distinct element is produced by changing the number of protons in an atom's nucleus. An atom of rhodium is produced, for instance, by taking one proton away from a krypton atom.

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The result of the computation when you follow the steps is 1.699.

A logarithm is a mathematical function that represents the exponent or power to which a specific base must be raised to obtain a given number. In simpler terms, it answers the question: "To what power must we raise a base number to obtain a certain value?"

What you should do is that on your calculator, you could press the logarithm key and then put in the value that has been shown and then the result would be displayed on your calculator.

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The mole fraction of sulfuric acid in the solution is 1.78 x 10^-4.

We need to know how many moles of sulfuric acid and how many moles there are in the solution as a whole in order to figure out the mole fraction of sulfuric acid.

To begin, we must convert the sulfuric acid's mass into moles. The molar mass of sulfuric corrosive is 98.08 g/mol. As a result, the number of moles of sulfuric acid is equal to 3.4 g divided by 98.08 g/mol, or 0.0347 mol.

Next, we need to figure out how many moles are all around the solution. We can expect that the volume of the arrangement is equivalent to the volume of water added (3500 ml). Notwithstanding, we want to switch the volume from milliliters over completely to liters since the unit of mole portion is moles per liter.

As a result, the volume of the solution is 3500 ml, or 3.5 L. Based on the assumption that water has a density of 1 g/mL, the mass of water in the solution can be calculated as follows:

The molar mass of water, which is 18.02 g/mol, can be used to determine the number of moles of water: mass of water = volume of water x density of water = 3500 ml x 1 g/mL = 3500 g

The mole fraction of sulfuric acid in the solution can be calculated as follows: 3500 g x 18.02 g/mol = 194.14 mol

Mole fraction of sulfuric acid is calculated by dividing the total number of moles in the solution by the number of moles of sulfuric acid: 0.0347 mol / (0.0347 mol + 194.14 mol) = 1.78 x 10-4.

Therefore, the mole fraction of sulfuric acid in the solution is 1.78 x 10^-4.

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The most accurate statement about signal transmissions among the given options is:

a) All signals in transmission will lose clarity with distance.

When a signal is transmitted over a distance, it can experience various types of degradation or attenuation. Factors such as distance, interference, noise, and the medium through which the signal travels can all contribute to a reduction in the clarity or quality of the signal. This means that as the distance between the source and receiver increases, the signal may become weaker, distorted, or prone to interference, resulting in a loss of clarity.

Answer:

1.67 ×10^-24g

Explanation:

counting from the first digit after the point till I got to the first non zero digit

The two isotopes' relative abundances are: 121 antimony = 57.2% and

123 antimony = 42.8%.

The average mass of all antimony isotopes is 121.76 amu.

Taking into account your data,

(the sum of both abundances is 100%), and

120.904x+122.904y=121.76

Now, some high school algebra will assist us in understanding the solution.

= 120.904x+12.2904x=121.76x=0.572, and thus

x+ y= 1

∴y≈ 0.42

Results show that 121 Sb has a relative abundance of about 57.2% and 123 Sb has a relative abundance of about 42.8% when these decimals are converted into percentages.

There are 2 naturally occurring isotopes of antimony. Antimony-121 has a mass of 120.904 amu, and antimony-123 has a mass of 122.904 amu.

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