What procedures can be performed on trials 2 and 3 so that the rate of dissolving is the same as trial 1?

Answer:

E

Explanation:

We have that for the Question "How many moles of a gas are in a 2.2-liter balloon at 600 mmHg and 85 C." it can be said that Moles of gas is

n= 0.059 moles of gas

From the question we are told

How many moles of a gas are in a 2.2-liter balloon at 600 mmHg and 85 C. Also asks to identify the P, V, N, R, and T. If unknown then put "?"

Generally the equation for the   is mathematically given as

[tex]P=\frac{600}{760}\\\\P=0.789atm[/tex]

Therefore

[tex]n=\frac{PV}{RT}\\\\Therefore\\\\n=\frac{PV}{RT}\\\\n=\frac{0.789*2.2}{0.08206*(85 + 273)}\\\\[/tex]

n= 0.059 moles of gas

Therefore

Moles of gas is

n= 0.059 moles of gas

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Answer:

am not sure but I think it c

Answer:

it’s A and B and the last one I still am trying to figure out.

Explanation:

Answer:

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Acid salts are a class of salts that produce an acidic solution after being dissolved in a solvent. Its formation as a substance has a greater electrical conductivity than that of the pure solvent. An acidic solution formed by acid salt is made during partial neutralization of diprotic or polyprotic acids.

hopefully help:)

Explanation:

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Answer:

sweating

Explanation:

why do I need 20 words

Answer:

balanced equation of glucose

6CO2 + 6H2O----------C6H12O6 + 6O2

in the presence of sun light.

Answer:

FILTRATION.

filter the solution and separate sand and salt solution

evaporation

evaporate the water and salt mixture and salt will be left as a solid

Answer:

FALSE

Explanation:

Answer:

nitric acid + iron=iron+[nitric acid ] 2 hydrogen

The net ionic equation will be Fe → [tex]Fe^{2+}[/tex].

The net ionic equation would be a chemical equation which only indicates the elements, compounds, as well as ions instantly involved in a chemical reaction.

The given chemical equation is:

HNO3+Fe → Fe(HNO3)2 +H2​

It can be written in term of ionic equation.

[tex]H^{+}[/tex] + [tex]NO_{3}^{-}[/tex]+Fe → [tex]Fe^{2+}[/tex] + [tex]H^{+}[/tex] + [tex]NO_{3}^{-}[/tex]

Hydrogen ion and nitrate ion will be canceled each other.

Hence, the net ionic equation will be

Fe → [tex]Fe^{2+}[/tex]

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Answer:

virtual

Explanation:

because we cannot touch or sense it

Answer: The moles needed are 0.01.

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.

[tex]Molarity=\frac{n\times 1000}{V_s}[/tex]

where,

n = moles of solute [tex](CuSO_4.5H_2O)[/tex] = ?  

[tex]V_s[/tex] = volume of solution in ml  

Now put all the given values in the formula of molarity, we get

[tex]0.10=\frac{n\times 1000}{100}[/tex]

[tex]n=\frac{0.10\times 100}{1000}=0.01[/tex]

Therefore, the moles needed are 0.01.

Answer:

3.3792 g

Explanation:

The balanced equation for the reaction is given as;

2 C2H2(g) + 3 O2(g) --> 2 CO2(g) + 2 H2O(g)

From the reaction;

2 mol of C2H2 requires 3 mol of O2

2.0 g of C2H2

Number of moles = Mass / Molar mass = 2 / 26.04 = 0.07680 mol

5.0 g of O2

Number of moles = Mass / Molar mass = 5 / 32 = 0.15625 mol

The limiting reactant is; C2H2

2 mol of C2H2 produces 2 mol of CO2

0.07680 mol produces x

Solving for x;

x = 0.07680 mol

Mass = Molar mass * Number of moles = 44 g/mol * 0.07680 mol = 3.3792 g

Answer:

plastic, glass, and electronics

Explanation:

those take longer to erode than normal trash.

Answer:

xkejhtidisjwjfnnfnsjrjdnqnhrijchqi

Answer:

S

Explanation:

The symbol for entropy is S, and a change in entropy is shown as “delta” S or ΔS. If the entropy of a system increases, ΔS is positive. If the entropy of a system decreases, ΔS is negative.

Answe AgNO₃

1:1:3 ratio

An exothermic reaction is described by ΔH(reactants) is greater than ΔH( products) and the correct option is option A.

The word exothermic means “releasing heat.” Energy, often in the form of heat, is released as an exothermic reaction proceeds.

Enthalpy of a reaction is defined as the heat energy change (Δ H) that takes place when reactants go to products. If heat is absorbed during the reaction, Δ H is positive; if heat is released, then Δ H is negative.

ΔH value negative –> energy released –> exothermic reaction

ΔH value positive –> energy absorbed –> endothermic reaction

Therefore, an exothermic reaction is described by ΔH(reactants) is greater than ΔH( products) and the correct option is option A.

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Answer:

0.423M

Explanation:

The reaction of acetic acid with NaOH is:

CH₃CO₂H + NaOH → CH₃CO₂Na + H₂O

That means the moles of NaOH added = Moles acetic acid in the solution

To solve this problem we need to find the moles of NaOH added to find the moles of acetic acid and its concentration using its volume as follows:

Moles NaOH:

29.6mL = 0.0296L * (0.250mol / L)= 0.0074 moles NaOH = Moles acetic acid

Molarity acetic acid:

0.0074 moles / 0.0175L =

Answer:

As a human being, we are considered to be a heterotroph because we rely on other organisms for food.

Answer:

SUN

Explanation:

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Answer:

toxic substances to humans

Explanation:

Answer:

Toxic substance to humans

Explanation:

Lead is a naturally occurring element found in small amounts in the earth’s crust. While it has some beneficial uses, it can be toxic to humans and animals, causing health effects.

Explanation:

You can think of independent and dependent variables in terms of cause and effect: an independent variable is the variable you think is the cause, while a dependent variable is the effect. In an experiment, you manipulate the independent variable and measure the outcome in the dependent variable.

Answer:

section c

Explanation:

section A shows the soild state

section B shows the transition of solid to liquid

section C shows the the pure liquid state

section D shows the transition of liquid to gas

section E shows the pure gas state

Answer:

Acidic oxides, or acid anhydride, are oxides that react with water to form an acid, or with a base to form a salt. They are oxides of either nonmetals or of metals in high oxidation states.

Explanation:

Answer:

C

Explanation:I got it correct on a quiz I did that had this question

Answer:

A titanium ion

Answer:

3 m/s²

Explanation:

First, find the change in velocity.

13 - 1 = 12

Divide the change in velocity by the time it took to cross this distance.

12/4 = 3

3 m/s² is the average acceleration of the lizard.