Calculate the moles of HCl in 30. mL of a 1.0 M solution.

Answer:

M= ml - 45301 - 11.59M.

Explanation:

Perhaps you like the appearance of rocks and boulders but prefer a material that stays cool in the desert heat. In this case, concrete or travertine should be your top picks. These materials have a high thermal mass and absorb the coolness of the earth below rather than the hot sun overhead

Sometimes you like how rocks and boulders look, but you'd rather have something that keeps cool in the hot desert. In this circumstance, limestone or concrete ought to be your top choices.

Deserts are incredibly arid places where well-adapted flora and animals can be found. Deserts may be divided into four basic categories are hot and dry, semi-arid, coastal, and cold.

The majority of specialists concur that a desert is any region of land with annual precipitation totals of less than 25 cm (10 inches). In a desert, evaporation frequently much outweighs yearly precipitation. Water is scarce for plants and other living things in all deserts.

Thus, Due to their large thermal mass, these materials absorb the cooling of the earth below rather than the heat from the sun above. Something that keeps cool in the hot desert.

To learn more about desert follow the link below;

https://brainly.com/question/656587

#SPJ1

The data collected by Leah and Paul supports Paul's opinion that matter can exist even when it is not visible.

Support is a term used to describe a range of services and resources offered to individuals in need. It can refer to providing help with practical tasks, such as helping someone to manage their finances or providing transport to medical appointments. It can also refer to providing emotional or social support. This could involve providing counselling or having regular conversations to help someone to feel understood and supported. Support can also refer to offering advice and guidance, or providing a safe space for someone to talk and express their feelings. In its broadest sense, support is about helping someone to have the best quality of life they can.

This is because the mass of the inflated bag is greater than the mass of the empty bag despite the fact that the volume of the inflated bag is much greater. This shows that the inflated bag contains air, which is matter, even though it cannot be seen.

To learn more about support
https://brainly.com/question/23849325
#SPJ1

Answer:

Picture:

Explanation:

Edge 2022

Moles of Nitrogen(N₂) gas would be produced : 1.09

The reaction coefficient in a chemical equation shows the mole ratio of the components of the reactants and products

If one mole of the reactant or product is known, then we can determine the moles of the other compounds involved in the reaction

Reaction

2NH₃(g) + 3CuO (s) ⇒ 3Cu(s) + N₂(g) + 3 H₂O(g)​

Copper(II) oxide was reacted with excess Ammonia, so CuO as a limiting reactant and moles of the product is based on moles of CuO

moles of CuO = 3.27

From the equation, the mol ratio of CuO : mol N₂ = 3 : 1, so mol  N₂ :

\(\tt \dfrac{1}{3}\times 3.27=1.09\)

Answer:

\(C_2H_6\)

Explanation:

Hello.

In this case, we can see that the mass of carbon of the unknown compound comes from the yielded mass of carbon dioxide, thus, we compute the moles of carbon as follows:

\(m_C=10.2gCO_2*\frac{1molCO_2}{44gCO_2}*\frac{1mol C}{1molCO_2}=0.232 molC\)

Moreover, the mass of hydrogen comes from the yielded water, therefore we can also compute the moles of water:

\(m_H=6.3gH_2O*\frac{1molH_2O}{18gH_2O}*\frac{2molH_2}{1molH_2O} =0.7molH\)

Then, to find the subscripts in the empirical formula, we divide by the moles of carbon as the smallest:

\(C:\frac{0.232}{0.232}=1\\ \\H:\frac{0.7}{0.232}=3\)

Whose molar mass is:

\(M_{CH_3}=12+1*3=15g/mol\)

Thus, the ratio of the molecular formula to the empirical formula is:

\(\frac{30}{15}=2\)

Therefore, the molecular formula is twice the empirical formula:

\(C_2H_6\)

Which is actually ethane.

Regards.

Answer:Joules (J) = 2

W=Fd = 1

Work = 3

Kinetic Energy = 4

Conservation of Mechanical Energy = 7

Mechanical Energy = 6

Potential Energy = 5

Explanation:

i think this is right

Boyle's Law-

\(\:\:\:\:\:\:\:\:\:\:\:\star\:\sf \underline{ P_1 \: V_1=P_2 \: V_2}\\\)

(Pressure is inversely proportional to the volume)

Where-

As per question, we are given that -

Now that we have all the required values and we are asked to find out volume which will be occupied if the pressure is adjusted to 80 KPa and the temperature remains unchanged. For that we can put the values and solve for the final volume of helium-

\(\:\:\:\:\:\:\:\:\:\:\:\star\:\sf \underline{ P_1 \: V_1=P_2 \: V_2}\)

\( \:\:\:\:\:\:\longrightarrow \sf 100 \times 160 = 80 \times V_2\\\)

\( \:\:\:\:\:\:\longrightarrow \sf V_2 = \dfrac{100 \times 160}{80}\\\)

\( \:\:\:\:\:\:\longrightarrow \sf V_2 =100\times \cancel{\dfrac{ 160}{80}}\\\)

\( \:\:\:\:\:\:\longrightarrow \sf V_2 = 100 \times 2\\\)

\( \:\:\:\:\:\:\longrightarrow \sf \underline{V_2 = 200 \:cm^3 }\\\)

Answer:

Radioactive material

Explanation:

At equilibrium, the HI concentration is 2.92 mol/L.

For the process H2(g)+CO2(g)updownarrow H2O+CO. at 1660 °C, the equilibrium constant KP is 4. In a 5 liter flask, 0.8 moles each of H2 and CO2 are first injected. Reactions occur in the following order with relation to H2: 1. In experiments 1 and 2, the reaction rate doubles when the initial concentration of H2 is doubled while the initial concentration of Cl2 is held constant.

H2(g) + I2(g) ⇌ 2HI(g)

c = [HI]² / [H2][I2]

At the specified temperature, c = 53.3, hence the following can be written:

53.3 = [HI]^2 / (0.400 mol/L) × (0.400 mol/L)

or, [HI]² = 53.3 × 0.16

or, [HI]² = 8.528

or, [HI] = sqrt(8.528) mol/L

or, [HI] = 2.92 mol/L

As a result, 2.92 mol/L of HI are present at equilibrium.

To know more about concentration visit:-

https://brainly.com/question/10725862

#SPJ1

In the given reaction, the reactants are hydrochloride acid (HCI) and sodium hydroxide (NaOH). The products are sodium chloride (NaCl) and water.

The chemical equation provided represents a neutralization reaction between hydrochloric acid (HCI) and sodium hydroxide (NaOH) in aqueous solution.

A neutralization reaction is a type of double displacement reaction in which an acid and a base react to form salt and water.

The reactants in this equation are hydrochloric acid (HCI) and sodium hydroxide (NaOH). Hydrochloric acid is a strong acid that dissociates in water to form hydrogen ions (H+) and chloride ions (Cl-). Sodium hydroxide, on the other hand, is a strong base that dissociates in water to form sodium ions (Na+) and hydroxide ions (OH-).

To learn more about reactants, follow the link:

https://brainly.com/question/29816521

#SPJ1

Answer:

3.39 * 10^-41 m

Explanation:

Given that:

speed of airplane = 880 km/hr

Mass of airplane = 80000 kg

Debroglie wavelength (λ) = h / mv

h = planck's constant = 6.626 * 10^-34

; mass = 80000kg

Velocity = 880km/hr to convert to m/s

Velocity = (880 * 1000m) / 3600 =244.44 m / s

λ = (6.626 * 10^-34) /(80000*244.44)

λ = (6.626 * 10^-34) / 19555200

λ = 3.3889 *10^-41

λ = 3.39 * 10^-41 m

Answer:

noble gases

Explanation:

Group 8A — The Noble or Inert Gases. Group 8A (or VIIIA) of the periodic table are the noble gases or inert gases: helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn). The name comes from the fact that these elements are virtually unreactive towards other elements or compounds.

Answer:

noble gases

Explanation:

Gathering 8A — The Noble or Inert Gases. Gathering 8A (or VIIIA) of the intermittent table are the respectable gases or dormant gases: helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn). The name originates from the way that these components are practically lifeless towards different components or mixes.

Answer:

C. 21%oxygen

Explanation:

Dry air contains 78.09% nitrogen, 20.95%oxygen, 0.93% argon, 0.04% carbon dioxide, and small amounts of other gases.

Sand casting, which makes up around 70% of all metal casting, is the most common casting technique. A design of the finished object is created in wood or metal and employed in the process of "sand casting,".

Casting techniques are a class of manufacturing procedures used to turn liquid materials like metal, plastic, or ceramics into solid things. The liquid substance is put into a mould and given time to harden and assume the contours of the hollow. Casting techniques come in a variety of forms, including sand casting, investment casting, die casting, shell casting, and lost foam casting. The kinds of materials that can be cast, the degree of accuracy and surface quality, and the complexity of the pieces that can be created are only a few of the distinctive characteristics that each casting technique has. The automobile, aerospace, and construction industries all use casting techniques extensively.

Learn more about casting methods here:

https://brainly.com/question/15359594

#SPJ4

To complete Sally's paragraph of the carbon cycle, the correct words to fill in the blanks are:

Close to the volcano, the carbon dioxide levels could increase. This could be good for plants, because they require carbon dioxide to grow. Over thousands of years when these organisms decay, they could form more limestone. This part of the carbon cycle is an example of how carbon from the atmosphere is used by organisms that eventually become part of the lithosphere.

The carbon cycle is a biogeochemical cycle that describes the movement of carbon through the biosphere, geosphere, hydrosphere, and atmosphere. The carbon cycle is one of the most important cycles on Earth, as it is essential for life.

In the paragraph, Sally is describing how the carbon cycle can be affected by volcanoes. When a volcano erupts, it releases carbon dioxide into the atmosphere. This can increase the carbon dioxide levels in the atmosphere, which can be good for plants. Plants use carbon dioxide to photosynthesize, which is the process by which they convert sunlight into energy.

Find out more on carbon cycle here: https://brainly.com/question/12005308

#SPJ1

Answer:

20 hydrogen atoms in 5 moles of methyl alcohol.

Explanation:

Hi!

So, there are 4 hydrogen atoms in 1 mole of methyl alcohol. If you multiply 4*5, it equals to 20.

Have a great day!

The pH of the solution that is 0.250 M in CH₃NH₂ and 0.125 M in CH₃NH₃Br is 10.95

The pH of the solution that is 0.250 M in CH₃NH₂ and 0.125 M in CH₃NH₃Br is determined using the Henderson-Hasselbalch equation given below:

where;

pKb = -log Kb

Kb = 4.4 × 10⁻⁴

pKb = -log (4.4 × 10⁻⁴)

pKb = 3.356

[salt] is the concentration of salt = 0.125 M

[base] is the concentration of base = 0.250 M

pOH = 3.356 + log  (0.125/0.250)

pOH = 3.05

pH = 14 - 3.05

pH = 10.95

Learn more about the Henderson-Hasselbalch equation at: https://brainly.com/question/26746644

#SPJ1

Answer:

Its D  

Explanation:

Did it on edge

According to the reaction: H₂S0₄ + Ca(OH)₂ → CaSO₄+ 2H₂O, the base is Ca(OH)₂.

Base is defined as a substance which can accept protons or any chemical compound that yields hydroxide ions (OH-) in solution.

Generally, base are substances that produces hydroxide ion when dissolve in water.  

Base are substances that reacts with acid to produce salt and water. Example of base includes sodium hydroxide, potassium hydroxide, magnesium hydroxide, calcium hydroxide etc.

Therefore, according to the reaction:

H₂S0₄ + Ca(OH)₂ → CaSO₄+ 2H₂O

The base is Ca(OH)₂.

learn more on chemical reaction here: https://brainly.com/question/14575718

Answer:

in order to reduce and simplify the study of the animals

to be able to group animals in their appropriate groups

Explanation:

when we classify organisms that means that we take a large number of organisms and group them to a single and correct group that will help the scientists across the world to identify organisms easily

The Voltage is the pressure from the electrical circuit of the power source that passes the current.

The Voltage is defined as the pressure from the electrical circuit of the power source that will passes the charged electrons that is the current through the conducting loop, it will enable them to do work  because of the illuminating the light. The in simple terms is : voltage = pressure, and it is denoted as the volts and the symbol is the V.

The voltage is described as the force that causes the flow of the charged particles. The Voltage is also called as the electromotive force.

To learn more about voltage here

https://brainly.com/question/13177389

#SPJ1

Answer:

Explanation:

The focus is the place inside Earth's crust where an earthquake originates. The point on the Earth's surface directly above the focus is the epicenter.

Answer:

The concentration of NaOH will be lower and the titration will be affected.

Explanation:

Hello,

In this case, sodium hydroxide is acknowledged as a highly hygroscopic substance, which means that is able to absorb water to its molecules. In such a way, in any measurement, if sodium hydroxide has absorbed water, the results will be wrong in terms of accuracy. More specifically, for concentration, if we have for example 30 grams of NaOH and we dissolve it a 100-mL solution, as it absorbed 30 grams of water, the total volume could be now approximated to 130 mL, thus, the concentration will change as follows:

\(M_1=\frac{30g/40g/mol}{0.1L}=7.5M\\ \\M_2=\frac{30g/40g/mol}{0.13L}=5.77M\)

It causes the actual molarity to be decreased, it means that in a titration procedure, less acid would be used to neutralize it or more of it would be needed to neutralize a given acid.

Best regards.

We have that  the NaOH sitting on the shelf had absorbed 1 g of water for every 1 g of NaOH will affect the Molarity of NaOH and its effectiveness

With the situation of NaOH sitting on the shelf having to absorbed 1 g of water for every 1 g of NaOH.

Means that for every  g of NaOH collected 1/2g is water and 1/2g is actual NaOH.

Hence this will cause a change in the molarity of NaOH thereby causing Molarity to drop by half as well. Giveing the resultant Molarity to be somewhere around half the regular molarity.

This many cause a variation also in the results of titration

For more information on this visit

https://brainly.com/question/17031324

The electric current is  0.025 A

Electric current refers back to the go with the flow of energy in an electronic circuit and to the amount of strength flowing through a circuit. it's far measured in amperes (A). the bigger the cost in amperes, the more energy is flowing within the circuit.

Ag+ + e¯ →Ag

1F deposits 107.87 g/mol (molecular mass) of silver

1F = 96500 C

Let, 107.87 g/mol needed = 96500 C

Number of coulombs required to deposit 0.3650 g of silver =(96500/107.87) 0.3650  

Q = 326.5 C

According to Faraday’s law, Q = I x t

I = 326.5 C / (216 x 60 s) = 0.025 A

Learn more about electric current here:-https://brainly.com/question/2984202

#SPJ9

Answer:

it is cleaning the water and heating it

Answer:

When boiling the water, the water will begin to evaporate and thats the physical change.

The chemical formula of aspartame is C₁₄H₁₈N₂O₅ and it's relative molecular mass is 294.30 g/mol which is calculated as (12×14)+(1×18)+(14×2)+(16×5).

Molecular  mass of a compound or a molecule is defined as the mass of the elements which are present in it.The molecular mass is considered to be a bulk quantity not a molecular quantity. It is often an average of the of the masses at many instances.

The molar mass and formula mass are used as synonym for the molecular mass.It does not depend on the amount of substance which is present in the sample.It has units of gram/mole.

Molecular masses of an element are given as relative atomic masses while that of compounds is the sum of relative atomic masses which are present in the compound.In case of aspartame it is calculated as,(12×14)+(1×18)+(14×2)+(16×5)=294.30 g/mol.

Thus , relative molecular mass or molecular mass of aspartame is 294.30 g/mol.

Learn more about molecular mass,here:

https://brainly.com/question/18446366

#SPJ1

Answer:

B. People live longer than they used to

Explanation:

None of the other answers are correct.