Which two cellular structures aid a plant when faced with limited water/hydration levels?.

Answer:

2.5 billion years

Explanation:

I am only in 6th grade so all I have to say is good luck and I wish you the best on that quiz.

Answer:

7.27 grams

Explanation:

Format= starting amount (g)·(1 mol/molar mass)·(amount of wanted/amount of starting)·(molar mass of wanted/1 mol)

\(41.0 x \frac{1 mol}{17.031}x\frac{3 H2}{2NH3} x\frac{2.016}{1 mol} =7.27\)

After solving the given equation ln(k2/k1)=-ea/r(1/t2-1/t1), we get k2 as \(k2 = k1*e^{(-Ea/R((t1 - t2)/(t1*t2)))}\)

To solve for k2, we need to isolate it on one side of the equation. First, we can simplify the right-hand side using the formula for the Arrhenius equation:
ln(k2/k1) = -Ea/R(1/t2 - 1/t1)
ln(k2/k1) = -Ea/R((t1 - t2)/(t1*t2))
Then, we can take the exponential of both sides to eliminate the natural logarithm:
\(k2/k1 = e^{(-Ea/R((t1 - t2)/(t1*t2)))}\)
Finally, we can multiply both sides by k1 to isolate k2:
\(k2 = k1*e^{(-Ea/R((t1 - t2)/(t1*t2)))}\)
So the equation to solve for k2 is:
\(k2 = k1*e^{(-Ea/R((t1 - t2)/(t1*t2)))}\)
This equation relates the rate constant k2 to the rate constant k1 and the activation energy Ea, as well as the temperatures t1 and t2. We can use this equation to predict how the rate of a reaction changes with temperature, given the rate constant at a different temperature and the activation energy of the reaction.

To learn more about rate constant click here https://brainly.com/question/20305871

#SPJ11

Answer:

30g

Explanation:

According to this question, a sulfur-containing compound is said to contain 15 percent by mass of sulfur. This means that 15% of the total mass of the compound is the mass of sulfur in the compound.

The question further states that there is a total of 200g of the compound containing sulfur, this means that the mass of sulfur can be calculated this:

Mass of sulfur = 15% of 200g

15/100 × 200g

15 × 2

30g

Hence, there are 30g of sulfur in 200g of the sulfur containing compound.

The percent yield of the reaction is approximately 40.3%.

To calculate the percent yield of a reaction, we need to compare the actual yield to the theoretical yield. The theoretical yield is the maximum amount of product that can be formed based on the stoichiometry of the reaction, while the actual yield is the amount of product actually obtained in the experiment.

First, we need to write the balanced equation for the reaction between Na₂S and Cd(NO₃)₂;

Na₂S + Cd(NO₃)₂ → 2NaNO₃ + CdS

From the balanced equation, we can see that 1 mole of Na₂S reacts with 1 mole of Cd(NO₃)₂ to produce 1 mole of CdS and 2 moles of NaNO₃.

Next, we need to calculate the theoretical yield of NaNO₃ based on the given amounts of reactants;

The number of moles of Na₂S is; 8.00 g / 78.04 g/mol = 0.1026 mol

The number of moles of Cd(NO₃)₂ is: 21.65 g / 236.42 g/mol = 0.0916 mol (since Cd(NO₃)₂ has a 1:1 stoichiometry with Na₂S, it is the limiting reactant)

The theoretical yield of NaNO₃ is; 2 mol NaNO₃ / 1 mol Na₂S × 0.1026 mol Na₂S = 0.2052 mol NaNO₃

We can then calculate the actual yield of NaNO₃ based on the given mass;

The actual yield of NaNO₃ is; 14.25 g

Finally, we can calculate the percent yield;

Percent yield = (actual yield/theoretical yield) × 100%

Percent yield = (14.25 g / (0.2052 mol × 84.99 g/mol)) × 100%

Percent yield = 40.3%

Therefore, the percent yield is 40.3%.

To know more about percent yield here

https://brainly.com/question/12704041

#SPJ1

Answer:

Coke

Explanation:

A solid fuel formed by heating coal in the absence of air is coke. Coke is black colored, tough porous substance. It is pure carbon.

Answer:

Osmosis: Osmosis is the movement of solvent particles across a semipermeable membrane from a dilute solution into a concentrated solution. ... Diffusion: Diffusion is the movement of particles from an area of higher concentration to lower concentration. The overall effect is to equalize concentration throughout the medium.

Explanation:

The endocrine system is a complex system of glands and hormones that regulate many bodily functions and maintain homeostasis. Homeostasis refers to the body's ability to maintain a stable internal environment despite changes in the external environment. One example of the endocrine system maintaining homeostasis is the regulation of blood sugar levels by the pancreas.

For such more question on homeostasis

https://brainly.com/question/1046675

#SPJ8

To make a 25% (m/m) solution of FeBr₃, we need to know the mass of FeBr3 that needs to be added to 250 g of water. This is because the percentage concentration is calculated based on the mass of the solute in a given mass of the solution.

First, we need to convert the percentage concentration to a decimal fraction. 25% is equivalent to 0.25. This means that we need 0.25 times the total mass of the solution to be FeBr₃. Therefore, the mass of FeBr₃ needed can be calculated as:

Mass of FeBr₃ = 0.25 x Total mass of solution

Mass of FeBr₃ = 0.25 x (Mass of water + Mass of FeBr₃)

We know that we need to add 250 g of water to make the solution. Therefore:

Mass of FeBr₃3 = 0.25 x (250 g + Mass of FeBr₃)

Solving for Mass of FeBr₃:

Mass of FeBr₃ = 0.25 x 250 g ÷ 0.75

Mass of FeBr₃ = 83.33 g

Therefore, we need 83.33 g of FeBr₃ to make a 25% (m/m) solution by adding 250 g of water.

To know more about concentration ,

https://brainly.com/question/30665317

#SPJ11

Answer:

2,760 grams NaCl

Explanation:

To find grams of NaCl, you need to (1) convert moles of Na to moles of NaCl (via mole-to-mole ratio from reaction) and (2) convert moles of NaCl to grams (via molar mass from periodic table). The final answer should have 3 significant figures based on the given measurement.

2 Na + Cl₂ --> 2 NaCl

Molar Mass (NaCl) = 22.99 g/mol + 35.45 g/mol

Molar Mass (NaCl) = 58.44 g/mol

47.2 moles Na           2 moles NaCl              58.44 grams

----------------------  x  ---------------------------  x  -------------------------  =
                                   2 moles Na                   1 mole NaCl

= 2,758.368 grams NaCl

= 2,760 grams NaCl

Answer:

Coppell zinc,ironic bond

Explanation:

lt will give away two zinc atoms

Answer:

I will go with Sodium chlorine NaCl

Answer: 1.215 × 10^4  i think

Explanation:

The total liters of the solution can be calculated by adding the liters of solute and liters of solvent, which in this case is 7 liters.

Molarity (M) is a measure of the concentration of a solution, defined as the number of moles of solute per liter of solution. In order to calculate the molarity of a solution, it is necessary to know both the number of moles of solute and the volume of the solution.

Given:

Liters of solute (the substance being dissolved) = 3 L

Liters of solvent (the substance doing the dissolving) = 4 L

To find: Total liters of solution

Total volume of solution = liters of solute + liters of solvent

Total volume of solution = 3 L + 4 L

Total volume of solution = 7 L

Therefore, the total liters of the solution are 7 L.

learn more about molarity here:

https://brainly.com/question/8732513

#SPJ1

Answer:

Explanation:

The density of a substance can be found by using the formula

\(density = \frac{mass}{volume} \\ \)

From the question

mass of metal = 25 g

volume = final volume of water - initial volume of water

volume = 28.5 - 25 = 3.5 mL

It's density is

\(density = \frac{25}{3.5} \\ = 7.142857...\)

We have the final answer as

Hope this helps you

Answer:

Explanation:

The density of a substance can be found by using the formula

\(density = \frac{mass}{volume}\\\)

From the question we have

mass = 418.23 g

volume = 436.2 ml

\(density = \frac{418.23}{436 .2} \\ = 0.958803\)

We have the final answer as

Hope this helps you

Answer:

c

Explanation:

because the sun is at the center of the universe the planet orbit the sun its basically a simple answer so if you need more help im right here

The sun and the planets are part of the solar system. The sun is in the center of the system, and the planets revolve around it. Thus, option C is correct.

A solar system is a part of the Milky Way galaxy that includes the planets, stars, sun, moon, asteroids, etc. The Sun is the star that is fixed at the center of the system.

The planets are not fixed and revolve in orbit around the sun and rotate on their axis. The sun and planets are made up of gases and have different atmospheres.

Therefore, option C. sun is at the center around which the planets revolve.

Learn more about the sun and planets here:

https://brainly.com/question/14029451

#SPJ2

99.93kJ

Given the chemical reaction expressed as:

From the reaction, 1 mole of nitrogen absorbs 200kJ of heat.

Determine the mole of nitrogen

The amount of energy 0.4496moles of N2 will absorb is given as:

Hence the amount of heat that will be absorbed when 14 grams of Nitrogen reacts with excess O2 is 99.93kJ

Answer:

D

Explanation:

D2O is the formula which is also 2H2O. D is an isotope of Hydrogen that is heavier.

Answer:

1100L.

Explanation:

Answer:

the particles must 1. collide

2. with sufficient energy

3. in proper orientation.

Explanation:

hope this helps

518.5 atm pressure of hydrogen is needed to maintain a \(H_2\) concentration of 0.42 m

The given Henry's law constant for \(H_2\) is 8.1 × 10^-4 M atm^-1 at 25°C. To find the pressure of hydrogen needed to maintain a \(H_2\) concentration of 0.42 M, we can use Henry's law.

The equation for Henry's law is:

C = kH*P

where C is the concentration of gas in moles per liter, P is the partial pressure of the gas in atmospheres, and kH is Henry's law constant in M/atm.

Plugging the values in Henry's law equation, we get:

0.42 = (8.1 × 10^-4)P

Dividing both sides by (8.1 × 10^-4), we get:

P = (0.42)/(8.1 × 10^-4)

P = 518.5 atm

Hence, the pressure of hydrogen needed to maintain a \(H_2\) concentration of 0.42 M is 518.5 atm.

Learn more about Henery's law here:

https://brainly.com/question/14908970

#SPJ11

A down arrow (↓) or (s) are symbols that are used to represent the precipitation product produce in the reaction.

AgNO3 (aq) + KCl (aq) → AgCl (s) + KNO3(aq)

Learn more about precipitation reaction:

https://brainly.com/question/24158764

The other choices Na₂SO₄, F₂, and C₄H₁₀, are all nonpolar or only marginally polar, and one would anticipate that they would be somewhat soluble in CCl₄.

The solubility of a substance in a particular solvent depends on the nature of the solute and solvent, as well as their intermolecular interactions. In general, polar solutes dissolve in polar solvents, and nonpolar solutes dissolve in nonpolar solvents. Based on this, we can predict that the substance that would be the least soluble in CCl₄ would be the one that is most polar.

Among the options given, the most polar substance is hydrochloric acid (HCl), which is a polar molecule due to the difference in electronegativity between hydrogen and chlorine atoms. Therefore, HCl would be the least soluble in CCl₄, which is a nonpolar solvent. The other options, Na₂SO₄, F₂, and C₄H₁₀, are all nonpolar or only slightly polar and would be expected to have some solubility in CCl₄.

To learn more about CCl₄ refer to:

brainly.com/question/30192787

#SPJ4

The layers of the atmosphere can be ranked based on the energy of the photons that are typically emitted there, from highest to lowest as Thermosphere,Mesosphere,Stratosphere and Troposphere respectively.

Based on the energy of the photons typically emitted, the layers of the atmosphere can be ranked as follows:

1. Thermosphere: This layer has the highest energy of photons as it is the region where the sun's radiation is absorbed and ionizes the gas particles. This ionization process releases high-energy photons, including ultraviolet and X-rays.
2. Mesosphere: This layer has a lower energy of photons than the thermosphere. It is the region where meteoroids burn up upon entering the Earth's atmosphere, releasing photons in the form of light.
3. Stratosphere: This layer has a lower energy of photons than the mesosphere. It is the region where ozone is present, which absorbs high-energy ultraviolet radiation from the sun and emits lower energy photons in the form of heat.
4. Troposphere: This layer has the lowest energy of photons as it is the region closest to the Earth's surface and is primarily heated by convection from the ground. The photons emitted here are primarily in the form of infrared radiation.

Learn more about photons here:https://brainly.com/question/29254702

#SPJ11

Answer:

= konstanta produk kelarutan

= kation dalam larutan berair

= anion dalam larutan berair

= konsentrasi relatif a dan b

DARI WEB

Divide the mass of the compound by the mass of the solvent and then multiply by 100 g to calculate the solubility in g/100g . Solubility of NaNO3=21.9g or NaNO3 x 100 g/ 25 g =87.6. Calculate the molar mass of the dissolved compound as the sum of mass of all atoms in the molecule.

Answer:

K_{sp} = [A^+]^a [B^-]^b

K_{sp} = solubility product constant

A^+ = cation in an aquious solution

B^- = anion in an aqueous solution

a, b = relative concentrations of a and b

Explanation:

One tube has a buffered solution + acid and the other tube has water + acid. To decide whether or not the solution is buffered, a simple pH test can be done. An acid-base indicator can be used to determine the pH of each solution.

A buffered solution is defined as a solution that can withstand minor changes in pH upon the addition of small amounts of an acid or base.

Consider the following steps:

Learn more about buffer: https://brainly.com/question/9458699

#SPJ11