Name the following alkyne:
CH3CH2C = C - CI

Answer: The correct option is D (Powders have more surface area and will dissolve faster).

Explanation:

For a scientist to investigate whether a powered pill will dissolve faster than a solid pill is putting the rate of the reaction under study.

Rate has to do with what is achieved per unit time. One of the factors affecting rates of chemical reaction includes the SURFACE AREA.

Reagents in solution tend to react faster than reagents in solid form. This is because molecules are freer to move about and collide more effectively in solutions. For solids, the more the surface area exposed for reaction the faster the reaction. For example, a lump of Zinc will not react as fast as powdered zinc with dilute hydrochloric acid to produce hydrogen.

Therefore, with the above explanation and example concerning surface area in a chemical reaction, the hypothesis the scientist should develop is that powers which has more surface area will dissolve faster than the soils pills.

Answer:

The correct option is D (Powders have more surface area and will dissolve faster).

Explanation:

Answer:

Given : No. Of moles = 1.5

To calculate : no. Of molecules =N

We know that moles = N / 6.022 x 10²³

Therefore, 1.5 x 6.022 x 10²³ = N

Hence N = 9.0330x 10²³ molecules

Answer:

Explanation:

what did you get?

Answer:

0.584 J/g°C

Explanation:

Using the formula as follows;

Q = m × c × ∆T

Where;

Q = amount of heat (joules)

m = mass of substance (g)

c = specific heat capacity (J/g°C)

∆T = change in temperature (°C)

According to the information in this question;

mass of substance (m) = 1050g

Initial temperature = 25.7°C

Final temperature = 30.4°C

amount of heat (Q) = 2880J

change in temperature (∆T) = (30.4°C - 25.7°C) = 4.7°C

Using Q = m.c.∆T

c = Q ÷ m∆T

c = 2880 ÷ (1050 × 4.7)

c = 2880 ÷ 4935

c = 0.584 J/g°C

The specific capacity of the substance is 0.584 J/g°C.

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Answer:

pOH = 5.32

Explanation:

What is the pOH...

The pOH of a solution is defined as:

-log [OH⁻] The -log of hydroxide ion concentration in molarity units

It is used to find pH of a solution because: pH = 14-pOH

Thus, the pOH of the solution of the problem is:

pOH = -log [OH⁻] = -log [4.82x10⁻⁶M]

pOH = 5.32

Answer:

0.287 M

Explanation:

Multiply the concentration of each solution by the volume of each (in liters) to get the moles of NaOH in that solution.

0.15 M • 5.4000 L = 0.81 mol NaOH

4.0 M • 0.2012 L = 0.80 mol NaOH

Add the mol of NaOH together to get the total --> 0.81 + 0.80 = 1.61 mol NaOH

Divide by the total volume of solution (5400.0 mL + 201.2 mL = 5,601.2 mL = 5.6012 L)

1.61 mol / 5.6012 L = 0.287 M NaOH

Answer:

c?

Explanation:

Answer:

CuCI2 is the answer.......

Answer:

pH = 2.4

Explanation:

pH is defined as the negative log of the hydronium concentration.

Thus, we can plug in the given hydronium concentration:

pH = -log[H⁺] = -log[0.0042] = 2.4 (two significant figures)

The pH of the solution is 2.4.

P.S: Although I referred to [H⁺] as hydronium concentration, it is more accurate to express it as [H₃O⁺], though they are interchangeable and means the same thing.

Answer:

B. HCl, C. H2SO4, F. HNO3

Explanation:

Acids have hydrogen (H) at the beginning

bases have OH at the end

HCl, H₂SO₄,HNO₃ are the chemical formulas which represent acids.

Acids are defined as substances which on dissociation yield H+ ions , and these substances are sour in taste. Out of the following , given sets of compounds HCl, H₂SO₄ and HNO₃ are acids as they yield H+ ions on dissociation.

According to the number of H+ ions which are generated on dissociation acids are classified as mono-protic , di-protic ,tri-protic and polyprotic  acids  depending on the number of protons which are liberated on dissociation.

Acids are widely used in industries  for  production of fertilizers, detergents  batteries and dyes.They are used in chemical industries for production of chemical compounds like salts which are produced by neutralization reactions.

Learn more about acids,here:

https://brainly.com/question/13586622

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Answer:

The answer is 0.013413582325191. i assume you are converting between moles Potassium Chloride and gram. The molecular formula for Potassium Chloride is KCl. The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles Potassium Chloride, or 74.5513 grams.

Explanation:

Answer:

C4H6O3 + H2O → 2C2H4O2

C2H4 + 3O2 → 2CO2 + 2H2O

2C4H10 + 13O2 → 8CO2 + 10(H2O)

Explanation:

Answer:

The answer is C. substance

Explanation:

I did this on study island and got it right, hope you enjoy.

Answer:

893 moles

Explanation:

An ideal gas at STP occupies 22.4 liters. Calculating Oxygen as if it were an ideal gas there are . 893 moles of Oxygen in 20.0 liters.

Answer:

I think both

Explanation:

Answer:

Glossopteris

Explanation:

Glossopteris is a fossil fern that helped support Wegener's hypothesis.

Hope this helps! Have a great day!

Answer:

Voltage.

Explanation:

Voltage is the force or pressure of electricity and is compared to the amount of water pressure in a hose.

Answer:

Voltage is the force or pressure of electricity and is compared to the amount of water pressure in a hose.

Answer:

Explanation:

The new volume can be found by using the formula for Boyle's law which is

[tex]P_1V_1 = P_2V_2[/tex]

Since we're finding the new volume

[tex]V_2 = \frac{P_1V_1}{P_2} \\[/tex]

We have

[tex]V_2 = \frac{250 \times 4}{1} = 1000 \\ [/tex]

We have the final answer as

Hope this helps you

Answer:

Modal means the one that occurs most often (averages: mode). In maths, the mode is one of the most common ways to describe a set of data. ... The modal class is, therefore, the group with the highest frequency.

Answer:

Modal means the one that occurs most often (averages: mode). In maths, the mode is one of the most common ways to describe a set of data. ... The modal class is, therefore, the group with the highest frequency. For example: if you counted the number of pencils in different pencil cases and you decided to group them.

Explanation:

தமிழன் ❤

Answer:

36.5 g CO2

Explanation:

First, Write a Balanced Equation  

C   + 2 ZnO → CO2  + 2 Zn

Useful Information,  

MW of ZnO = 81.41 g

MW of CO2 = 44.01 g

135 g ZnO x (1 mol ZnO /  81.41 g ZnO) x (1 mol CO2/2 mol ZnO) x ( 44.01 g CO2 / 1 mol CO2 ) = 36.5 g CO2

Answer:

The hot temperature of inner core and outer core is responsible for the production of magnetic field.

Explanation:

The physical properties of the inner core, outer core, and lower mantle are essential for the development of Earth's magnetic field because the very high temperature of inner core is responsible for the formation of magnetic field. If the inner core is not very hot so the magnetic field will not be generated and our earth's atmosphere will not be save from the solar wind. It can be blown away by the solar wind if this magnetic field is not present so we can conclude that the physical properties of inner core and outer core is important for the production of magnetic field.

Answer:

0.0107 mol

Explanation:

Multiply concentration by volume (in liters) to get moles.

0.5 M • 0.0213 L = 0.0107 mol