Three 10 g samples of sugar are represented in the diagram below. Sample A dissolves in water more slowly than sample B. Sample B dissolves more slowly than sample C. Which of the following best explains why Sample A dissolves most slowly?

B. Lakes fill to overflowing

Explanation:

electrovalent bond covers single bond.

Covalent bond covers double or more bonds.

Answer:

Total pressure = 10 atm

Explanation:

The excersise can help to understant the concept of mole fraction

Mole fraction is defined as:

moles of gas / Total moles = pressure of that gas / Total pressure

Both can be summed.

Sum of moles of each gas in the mixture = Total moles

Sum of pressures of each gas in the mixture = Total pressure

Those, are laws for gases.

Total moles: 3 mol of gas A + 4 moles of gas B + 5 moles of C

                 = 12 total moles

Pressure of A is 2.5 atm.

We replace data at the mole fraction relation

moles of A / total moles = Pressure of A  / Total pressure

3 moles / 12 moles = 2.5 atm / Total pressure

Total pressure = 2.5 atm / (3mol/12mol)

Total pressure = 10 atm

Answer:

I think the answer would be 'testable'.

Answer:

what language do you speak?

Answer:

Orbit

Explanation:

when something makes a complete path around the sun it is called an orbit

Answer:

20KJ

Explanation:

We know that heat required to raise the temperature of substance is given by

thermal energy Q= mass(m) × specific heat capacity(c) × change in temperature.(ΔT)

Q = mcΔT

given data: mass m = 2kg , c = 2000j/Kg°C and ΔT = 120-20 =100°C

Therefore, Q = 2×2000×100 = 20000 J = 20KJ

Hence, 20KJ heat is required to to heat 2 kg of cooking oil with a specific heat capacity of 2000 from 20 to 120 [ Units have been assumed as per convenience)

Answor

c                                              

Explanation:

Answer:

26.56g

Explanation:

The half life of an isotope decay is the time transcurred when the initial amount of the isotope decays to the half of its amount.

For the problem, when 1 half life transcur, the sample has a mass of:

425g / 2 = 212.5g

When 2 half lives transcur:

212.5g / 2 = 106.25g

3 half lives:

106.25/2 = 53.13g

And the amount that is found after 4 half lives is:

53.13/2 =

Answer:

If Earth was tilted much less on its axis, it would lead to minor changes in precipitation and temperatures as Earth moves slightly towards and away from the sun.

Explanation:

If a planet tilts more, it leads to colder winters and warmer summers. However, if a planet tilts less, it leads to less severe seasons that is and milder winters and cooler summers.

If Earth was tilted much less on its axis, it would lead to minor changes in precipitation and temperatures as Earth moves slightly towards and away from the sun.

Answer: A buffer solution is a solution made to prevent the pH level of something from changing when you add a base or an acid to it. For example, if you put a buffer solution in a pool, and then you put chlorine in it, the chlorine's effect on the PH level will be suppressed.

Answer:

side to side?

Explanation:

Answer:

12 and 20 moles ratios, respectively.

Explanation:

Note that the number of mole ratios you can write for a chemical reaction involving a total of n substances is (n)(n–1). Thus, for reactions involving four and five substances, you can write 12 and 20 moles ratios, respectively.

*** HOPE IT HELPS! :)

Answer:

Tin exists in two oxidation states, +4 and +2. Elemental tin is readily oxidized to the dipositive ion in acidic solution, but this Sn2+ ion is converted to the Sn4+ ion by many mild oxidizing agents, including elemental oxygen. Oxidation under alkaline conditions normally gives the tetrapositive (Sn4+) state.

Answer:

The unit of Atomic mass is "amu"

Explanation:

Atomic mass unit

Answer:

Copper(II) nitrate and silver

Explanation:

2AgNO₃(aq )  +  Cu  (s) -->  Cu(NO₃)₂(aq ) +  2Ag(s)

This can be called a redox reaction because silver nitrate is reduced and copper is oxidized.  This can also be called a single replacement reaction because copper replaces silver in the substance silver nitrate.

Answer:

c. floodplain

Explanation:

brainliest please!

Answer:

I think the answer is floodplain.

Explanation:

I hope this helps, have a blessed day.

Answer:

The heat required, to burn a hole 15 cm in diameter through the iron door is 34,370.050 kJ

Explanation:

The information given on the door are;

The thickness of the door, t = One-meter

The diameter of the hole to be burnt out, d = 15 cm = 0.15 m

The latent heat of fusion of iron, [tex]H_f[/tex] = 247 kJ/kg

The density of iron, ρ = 7.874 g/cm³ = 7874 kg/m³

The volume of the iron to be melted off, V = π·d²/4 × t

∴ V = (π × 0.15²/4) × 1 ≈ 0.01767145867

The volume of the iron to be melted off, V ≈ 0.01767145867 m³

The mass of the iron to be melted off, m = ρ × V

∴ m = 7874 kg/m³ × 0.01767145867 m³ ≈ 139.145066 kg

The mass of the iron to be melted off, m ≈ 139.15 kg

The heat required, to melt the mass of iron at the melting point temperature and burn a hole 15 cm in diameter, ΔH, is given as follows;

ΔH = [tex]H_f[/tex] × m

∴ ΔH = 139.15 kg × 247 kJ/kg = 34,370,050 J = 34,370.050 kJ

The heat required, to burn a hole 15 cm in diameter through the iron door ΔH = 34,370.050 kJ.

Answer: The pressure is 2.14 atm if the gas was heated to 373 K and the volume decreased to 1.90 L.

Explanation:

Given: [tex]V_{1} = 2.50 L[/tex],      [tex]P_{1} = 1.34 atm[/tex],       [tex]T_{1} = 308 K[/tex]

[tex]P_{2} = ?[/tex] ,            [tex]V_{2} = 1.90 L[/tex],          [tex]T_{1} = 373 K[/tex]

Formula used to calculate the final pressure is as follows.

[tex]\frac{P_{1}V_{1}}{T_{1}} = \frac{P_{2}V_{2}}{T_{2}}[/tex]

Substitute the values into above formula as follows.

[tex]\frac{P_{1}V_{1}}{T_{1}} = \frac{P_{2}V_{2}}{T_{2}}\\\frac{1.34 atm \times 2.50 L}{308 K} = \frac{P_{2} \times 1.90 L}{373 K}\\P_{2} = \frac{1.34 atm \times 2.50 L \times 373}{308 K \times 1.90 L}\\= 2.14 atm[/tex]

Thus, we can conclude that the pressure is 2.14 atm if the gas was heated to 373 K and the volume decreased to 1.90 L.

Answer:

Option b which is n equal to 3

Answer: what do i have to do to help.. ;-; like i need instructions and why are the words coverd off black??

;-;

Explanation:

The functional group to which the molecule belongs is the carbonyl group.

A functional group refers to an atom, group of atoms or bond which is responsible for the chemical reactivity of a particular homologous series.

From the image of the molecule that has been shown in the question, the functional group to which the molecule belongs is the carbonyl group.

Learn more about carbonyl:https://brainly.com/question/21440134

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Answer:

A

Explanation:

got it right in app filler filler filler filler

Answer:

hola no ablo inglés porfavor