Which Part Of The Stem Transports Water To The Rest Of The Plant? A.root Cells B. Xylem C.bark D. Phloem (2024)

Answer: The pressure in the can is 4.0 atm

Explanation:

According to ideal gas equation:

[tex]PV=nRT[/tex]

P = pressure of gas = ?

V = Volume of gas = 0.410 L

n = number of moles = [tex]\frac{\text {given mass}}{\text {Molar mass}}=\frac{3.0g}{44.1g/mol}=0.068mol[/tex]

R = gas constant =[tex]0.0821Latm/Kmol[/tex]

T =temperature =[tex]20^0C=(20+273)K=293K[/tex]

[tex]P=\frac{nRT}{V}[/tex]

[tex]P=\frac0.068mol\times 0.0820 L atm/K mol\times 293K}{0.410L}=4.0atm[/tex]

Thus the pressure in the can is 4.0 atm

Answer:

4.0 moles NaHCO

General Formulas and Concepts:

Math

Pre-Algebra

Order of Operations: BPEMDAS

BracketsParenthesisExponentsMultiplicationDivisionAdditionSubtractionLeft to Right

Chemistry

Atomic Structure

MolesAvogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

Stoichiometry

Using Dimensional AnalysisExplanation:

Step 1: Define

[Given] 2.4 × 10²⁴ molecules NaHCO

[Solve] moles NaHCO

Step 2: Identify Conversion

Avogadro's Number

Step 3: Convert

[DA] Set up: [tex]\displaystyle 2.4 \cdot 10^{24} \ molecules \ NaHCO(\frac{1 \ mol \ NaHCO}{6.022 \cdot 10^{23} \ molecules \ NaHCO})[/tex][DA] Divide [Cancel out units]: [tex]\displaystyle 3.98539 \ moles \ NaHCO[/tex]

Step 4: Check

Follow sig fig rules and round. We are given 2 sig figs.

3.98539 moles NaHCO ≈ 4.0 moles NaHCO

Answer:

True

Explanation:

A chemical change is otherwise known as a chemical reaction. A chemical change is characterized by the formation of new substances, evolution of heat and change in chemical composition of substances. The change in the composition of substances during a chemical change is the result of the making and breaking of chemical bonds during a chemical change.

A chemical change is not easily reversible because it involves changes in chemical composition of substances.

An example of a chemical change is the combination of sodium hydroxide and hydrochloric acid according to the reaction equation;

HCl(aq) + NaOH (aq) -----> NaCl(aq) + H2O (l)

We easily notice the change in the chemical composition of each of the substances involved in the reaction.

Divide the volume of water with mass of salt and multiply with 100 you'll get the concentration percentage

answer is B, because solution A's percentage is 10%

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Answer:

conduction

Explanation:

The answer is Conduction

A

because both have 2's in front of them

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Answer: Weak base

Explanation:

I hope this helped!

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Answer and Explanation:

Solutions that have a pH of 8 would be considered a Weak Base.

This is because a weak base is a base that, upon dissolution in water, does not dissociate completely.

Solutions/liquids that have a pH higher than a pH of 7 are basic solutions, while solutions/liquids that have a pH lower than a pH of 7 are acidic solutions.

When the pH level is closer to 7, it is weak, and when it is far from 7, like if it is 1 or 12, then it is a strong acid/base.

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Answer:

B

Explanation:

The solubility depends on the ksp. As the value of ksp increases the compound becomes more and more soluble.

In the options, the highest ksp value is 10^-10, thus that one is the most soluble.

Answer:

A) protons

Explanation:

Protons are what give atoms their elements. If one atom has a differing number of protons from another atom, they will never be the same element.

Answer:

[tex]\Large \boxed{\sf -6000 \ J}[/tex]

Explanation:

Use formula

[tex]\displaystyle \sf Heat \ (J)=mass \ (kg) \times specific \ heat \ capacity \ (Jkg^{-1}\°C^{-1}) \times change \ in \ temperature \ (\°C)[/tex]

Specific heat capacity of ice is 2,000 J/(kg °C)

Substitute the values in formula and evaluate

[tex]\displaystyle \sf Heat \ (J)=0.05 \ kg \times 2000 \ Jkg^{-1}\°C^{-1} \times (-100\°C-(-40 \°C))[/tex]

[tex]Q=0.05 \times 2000 \times (-100-(-40)) =-6000[/tex]

Answer:

9.15

Explanation:

To solve this problem we'll use Henderson-Hasselbach's equation:

pH = pKa + log[tex]\frac{[A^-]}{[HA]}[/tex]

For this problem:

pH = 9.25 + log[tex]\frac{[NH_3]}{[NH_4Cl]}[/tex]

Now we calculate [NH₄Cl], first by converting 50.0 g of NH₄Cl into moles using its molar mass:

50.0 g NH₄Cl ÷ 53.491 g/mol = 0.935 mol

Meaning that [NH₄Cl] = 0.935 mol / 1.00 L = 0.935 M

Finally we calculate the pH:

pH = 9.25 + log[tex]\frac{0.75M}{0.935 M}[/tex] = 9.15

The pH can be defined as the hydrogen ion concentration in the solution. The pH of ammonium chloride solution in ammonia is 9.16.

What is molarity?

The molarity is the moles of a compound in the liter of solution. The molarity of 50 grams ammonium chloride in a liter of solution is given as:

[tex]\rm Molaity=\dfrac{mass}{molar\;mass\;\times\;volume(L)} \\\\NH_4Cl\;Molarity=\dfrac{50\;g}{53.491\;g/mol\;\times\;1\;L} \\\\NH_4Cl\;Molarity=0.935\;M[/tex]

The ammonia in the solution contributes to the pH from the ammonium chloride salt. The pH can be given as:

[tex]\rm pH=pKa+log\dfrac{acid}{salt}[/tex]

The pKa of ammonia is 9.25. The concentration of ammonia is given as 0.75 M.

The pH of the solution can be given as:

[tex]\rm pH=9.25+log\dfrac{0.75\;M}{0.935}\\ pH=9.25+(-0.09)\\pH=9.16[/tex]

The pH of the solution is 9.16.

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Answer:

Coal

Explanation:

thx for points :D

Answer:

Coal

Explanation:

your welcome<3

Answer:

6.3*10^-11

no reasoning i just know thats the answer you dont have to trust me.

Answer:

B. OR C.

Explanation:

So, 1 mol of ethanol, C2H5OH contains 1 mol of atoms of O; 1 mol of formic acid, HCO2H contains 2 moles of atoms of O; and 1 mol of water, H2O contains 1 mol of atoms of O.

Answer: So, of the three compounds given, formic acid, HCO2H, contains the greatest number of moles of oxygen atoms.

Answer:

See explanation

Explanation:

When (S)-2-methylcyclopentanone is treated with an acid, the carbonyl oxygen atom is protonated.

This leads to the emergence of a positive charge on the cabonyl oxygen. Then the C=O bond is now transformed into H-C-OH where C is a carbocation which leads to a racemic mixture. Loss of a proton from the adjacent carbon atom completes the mechanism.

In this process, the optically active (S)-2-methylcyclopentanone is converted to a pair of diastereomers thereby loosing its optical activity.

Answer:

copper will reach to higher temperature first.

Explanation:

Answer: increase

Explanation: when Mg is powder it has greater surface area and

Reaction occurs faster

Answer: 1:16

Explanation:

Make sure the area is higher than the solvent because if it isn't, the solvent will just wash it into the solution.

What is chromatography?

Chromatography is defined as a technique for separation in which the analyte is mixed with a liquid or gaseous mobile phase and pushed through a stationary phase. Chromatography is a crucial biophysical method that makes it possible to separate, distinguish, and purify mixture's constituent parts for qualitative and quantitative study.

The sample may be lifted with more force thanks to the solvent, which also causes the sample to dissolve. Because of this, the start line in chromatography should always be above the solvent. To avoid getting an angled solvent front, it is crucial to ensure that the solvent is level and not at an angle.

Thus, make sure the area is higher than the solvent because if it isn't, the solvent will just wash it into the solution.

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Answer:

When there is a conflict and if a friend responding to conflict with confrontation it may affect positively or negatively both ways depend how he responds or confront the other person he has a conflict with. But normally people alienate with the person being confrontational. A friend should try to resolve the conflict by making an amicable solution.

if it is used correctly it could help in making the relationship strong, however, confronting by attacking them verbally, insult them, or talking loudly among the group of people can escalate the conflict.

I will advise him to be cautious of the approach as it may positively or negatively affect the situation.

What is Confrontation?

This is the process which involves directly engaging one another in the course of a dispute between them.

This method however could either resolve the conflict or worsen it which is why special approach should be taken by being calm and being respectful to the other party involved.

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Answer:In the LATER stages of development they would have a spine

Explanation:

Answer: v = 200 ml · 0.45 M/ 1.88 M

Explanation: when solution is diluted, amount of substance

is same and n= c · V v1 = v2 · c2 / c1

The appropriate answer is "47.87 mL".

Given values are:

Concentration of undiluted HCl, [tex]C_1=1.88 \ M[/tex]Concentration of diluted HCl, [tex]C_2=0.45 \ M[/tex]Volume of diluted HCl, [tex]V_2=200 \ mL[/tex]

By using the dilution equation, we get

→ [tex]C_1V_1=C_2V_2[/tex]

or,

→ [tex]V_1=\frac{C_2V_2}{C_1}[/tex]

By substituting the given values, we get

→ [tex]=\frac{0.45\times 200}{1.88}[/tex]

→ [tex]=\frac{90}{1.88}[/tex]

→ [tex]= 47.87 \ mL[/tex]

Thus the above answer is correct.

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Answer:

animal

Explanation:

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Answer:

Molar ratio = 1.5Chemical formula = Fe₂S₃

Explanation:

First we convert the given masses of each element into moles, using their respective molar masses:

Fe ⇒ 11.26 g ÷ 55.845 g/mol = 0.202 mol FeS ⇒ 9.70 g ÷ 32.065 g/mol = 0.302 mol S

Now we divide them in order to calculate the molar ratio of S to Fe:

0.302 / 0.202 = 1.5

Meaning that for each 1 Fe mol, there's 1.5 S moles. We can write that as Fe₁S₁.₅

Finally we double those subscripts so that they become the lowest possible integers: Fe₂S₃.

Explanation:

heyyyyyyyyy how are you sure

Answer:

tendency of molecules with unlike electrical charges to attract each other.

Explanation: