Drag and drop each trait to the name it describes.

Kim

Understands gardening

Wendell

Gonzalo

Learn English quickly

Is determined and strong

Can be impatient

Tries new things easily

Helps his family survive

Answer:

10.58 J/g-°C

Explanation:

To find the specific heat capacity of the metal, you need to know how much heat was lost when it reacted with water.

You know that there are 55.4 g of water, the initial temp. of water is 25°C, and the final temp. (the mixture's temp.) is 63.4°C.

You should also know that the specific heat capacity of water is 4.186 J/g-°C.

Plug this into the equation the q=mcΔT.

q = (55.4 g)(4.186 J/g-°C)(63.4°C - 25°C)

q = 8905.12896 J

If 8905.12896 J was gained by the water, then 8905.12896 J must have been lost from the metal.

You know that there are 23 g of the metal and that its initial temp. is 100°C.

Plug this information into q=mcΔT.

8905.12896 J = (23 g)(C)(63.4°C - 100°C)

C = 10.58 J/g-°C

*When you plug all of this into the calculator, it will result in a negative number but keep in mind that heat was LOST by the metal so 8905.12896 J  is essentially negative. So the negative cancels out.*

Answer:

Radiometric dating

Explanation:

Radiometric dating would be the most effective way since it is a technique that can establish the age of objects older than a few thousand years.

Answer:

I believe the volume should increase.

Answer:

The reaction is exothermic as the solution becomes warm.

Explanation:

Hello there!

In this case according to the described reaction between sodium metal and water, we can write up the chemical equation whereas the products turn out to be sodium hydroxide and hydrogen gas:

[tex]2Na+2H_2O\rightarrow 2NaOH+H_2[/tex]

Moreover, these reactions are known to be highly exothermic, for that reason the solution becomes warm as the reaction releases heat as it goes to completion.

Best regards!

The dissolution of gases in water is exothermic therefore oceans will dissolve less CO2 as their temperatures rise.

The term  effervescence refers to the rise of a gas in a system or simply put, it is the evolution of gas. When an  effervescent tablet is placed in the water under each inverted glass, a gas will rise in each glass.

The air space in the hot glass  is greater than the air space in the cold glass  We can see that the gas has a lower solubility in hot water than in cold water. This is because, solubility of gases is exothermic.

The bottle that is left in the hot sun will have more fizzing because the CO2 does not dissolve owing to the higher temperature.

The rise in ocean temperature means that the oceans will dissolve less CO2 in the future and reduce the CO2 holding capacity of the oceans.

Learn more about CO2: https://brainly.com/question/867804?

Answer:86.84

Explanation:

Answer:

9.78x10^(-5) mol

Explanation:

To convert molecules to moles, divide the # of molecules by 6.02x10^23.

5.89x10^19 / 6.02x10^23 = 9.78x10^(-5) mol

A buffer is primarily used to limit the pH change in a solution. Option A is correct.

A buffer is the solution which contains the weak acid and its conjugate base or weak base and its conjugate acid. It is designed to resist changes in pH when small amounts of acid or base are added to it.

When an acid or base is added to a buffer solution, the buffer components react with the added ions to minimize the impact on the solution's pH. If an acid is added, the buffer will react with the acid by accepting the H⁺ ions. If a base is added, the buffer will react with the base by donating H⁺ ions. In both cases, the buffer helps maintain the pH at a relatively stable level.

To prevent an acid from dissociating, is not accurate. A buffer does not prevent an acid from dissociating. In fact, the acid in a buffer solution is necessary to provide the conjugate base and maintain the buffer's pH buffering capacity.

To neutralize the pH of a solution, is also not accurate. A buffer does not neutralize the pH of a solution to a particular value. Instead, it resists significant changes in pH when small amounts of acid or base are added.

To prevent a salt from dissolving, is unrelated to the purpose of a buffer. A buffer is not used to prevent the dissolution of salts.

Hence, A. is the correct option.

To know more about buffer here

https://brainly.com/question/31847096

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Answer:

a. Indivisible.

b. Mass.

c. Masses.

d. Compound.

e. Elements.

Explanation:

An atom can be defined as the smallest unit comprising of matter that forms all chemical elements. Thus, atoms are basically the building blocks of matters and as such defines the structure of a chemical element.

Generally, these atoms are typically made up of three distinct particles and these are protons, neutrons and electrons.

Hence, all the physical properties of a mineral result from the mineral's internal arrangement of atoms.

The following are statements postulated by the Dalton's atomic model;

a) Elements are composed of minute, indivisible particles called atoms.

b) Atoms of the same element are alike in mass and size.

c) Atoms of different elements have different masses and sizes.

d) Chemical compound are formed by the union of two or more different atoms of different elements.

e) Atoms combine to form compounds in simple numerical ratios, such as one to one, one to two, etc.

f) Atoms of two elements may combine in different ratios to form more than one compound.

Answer:

4.1g of Cr will make (317/104) x 4.1 = 12.5g of CrCl3

Answer:

Neutralization reaction

Explanation:

It is a reaction between an acid and a base

Answer:

a. i. 5.092 × 10²⁰ Hz ii. 588.98554 nm ii. 10667809.11 rad/m

b. i. 5.087 × 10²⁰ Hz ii. 589.58286 nm iii. 10657001.3 rad/m

Explanation:

refractive index, n = λ/λ'  where λ = wavelength in vacuum = and λ' = wavelength in air

a. For λ = 589.15788 nm,

i. Frequency,

f = c/λ where c = speed of light in vacuum = 3 × 10⁸ m/s and λ = 589.15788 nm = 589.15788 × 10⁻⁹ m

So, f = 3 × 10⁸ m/s ÷ 589.15788 × 10⁻⁹ m

= 0.005092 × 10¹⁷ /s

= 5.092 × 10²⁰ /s

= 5.092 × 10²⁰ Hz

ii. Wavelength,

Since n = λ/λ'  where λ = wavelength in vacuum = and λ' = wavelength in air

and n = 1.0002926

λ' = λ/n

= 589.15788 nm/1.0002926

= 588.98554 nm

k = 2π/λ'

= 2π/588.98554 nm

= 0.01066780911 rad/nm

= 0.01066780911 rad/nm × 10⁹ nm/1m

= 10667809.11 rad/m

b. For λ = 589.755 37 nm.,

i. Frequency,

f = c/λ where c = speed of light in vacuum = 3 × 10⁸ m/s and λ = 589.755 37 nm. = 589.755 37 × 10⁻⁹ m

So, f = 3 × 10⁸ m/s ÷ 589.755 37 × 10⁻⁹ m

= 0.005087 × 10¹⁷ /s

= 5.087 × 10²⁰ /s

= 5.087 × 10²⁰ Hz

ii. Wavelength,

Since n = λ/λ'  where λ = wavelength in vacuum = and λ' = wavelength in air

and n = 1.0002926

λ' = λ/n

= 589.755 37 nm./1.0002926

= 589.58286 nm

k = 2π/λ'

= 2π/589.58286 nm

= 0.0106570013 rad/nm

= 0.0106570013  rad/nm × 10⁹ nm/1m

= 10657001.3 rad/m

Answer:

heat flows from the object that has more thermal more energy to the object with less thermal energy

Answer:

Explanation:

Find the molar mass of H2SO4

2H = 2 * 1 = 2

S  = 1 * 32 =32

O4 = 4*16 = 64

total             98

Find the number of mols in 71.5 grams

mols = given mass / molar mass.

given mass = 71.5

molar mass = 98

mols = 71.5/98

mols = 0.7296 mols of H2SO4

Find the moles of H2O

From the Balanced equation, every mol of H2SO4 produces 2 moles of H2O

mols water = 2 * 0.7296

mols water = 1.4592

That's as far as I can take you. I have to know a great deal more to get the volume of H2O

Answer:

Gamma-rays are a form of electromagnetic radiation, as are radio waves, infrared radiation, ultraviolet radiation, X-rays and microwaves. Gamma-rays can be used to treat cancer, and gamma-ray bursts are studied by astronomers.

Explanation:

Hope this helped Mark BRAINLIEST!!!

Gamma Rays are ionizing Electromagnetic radiation, obtained by the decay of an atomic nucleus. Gamma rays are more penetrating, in matter, and can damage living cells to a great extent. Gamma rays are used in medicine (radiotherapy), industry ( Sterilization and disinfection) and the nuclear industry.

Answer:

The final balanced equation is : 2C2H2+5O2→4CO2+2H2O.

Answer:

After 36 minutes, there will be a population of 800,000 bacteria.

Explanation:

After the first 18 minutes, it will double to 400,000. Then, at 36 minutes, it will have doubled again, giving you 800,000.

Answer:

The hydrogen reacts with oxygen across an electrochemical cell

Explanation:

Answer:

if you will decrease the HCO3- so the less H+ ion will be form and reaction will more likely shift to product and when HCO3- decreases pH value increases and vica versa for the increasing HCO3 the more H+ ion will be form and reaction will shift to product and the pH value will decreases!!

I've doubt in reaction shift coz whatever is the amount of HCO3- this is completely gonna form number of H+ so reaction shift may or may not be same!!

☁️ Answer ☁️

Yes.

"In so doing, he became the first scientist to explain the behavior of atoms in terms of the measurement of weight. He also uncovered the fact that atoms couldn't be created or destroyed. Dalton's theory additionally examined the compositions of compounds, explaining that the tiny particles (atoms) in a compound were compound atoms"

Hope it helps.

Have a nice day noona/hyung.

Answer:

a women standing in high heels

Explanation:

Answer:

A woman standing in high heels

Answer:

V = 5000 mL

Explanation:

¡Hola!

En este caso, dado que la molaridad de una solution se calcula al dividir las moles por el volume de solución en litros, es posible calcular el volumen cuando se dividen las moles por la molaridad, tal y como se muestra a continuación:

[tex]M=\frac{n}{V}\\\\V=\frac{n}{M}[/tex]

Así, podemos reemplazar la molaridad y moles dadas para obtener:

[tex]V=\frac{1.5mol}{0.3mol/L}=5L[/tex]

Que en mililitros sería:

[tex]V=5L*\frac{1000mL}{1L}\\\\V=5000mL[/tex]

¡Saludos!

Answer:

Water applied to the surface of a relatively dry soil infiltrates quickly due to the affinity of the soil particles for water. As time passes and the soil becomes wet, the force of gravity becomes the dominant force causing water to move.

Explanation:

Answer:

Gravity

Explanation:

Water applied to the surface of a relatively dry soil infiltrates quickly due to the affinity of the soil particles for water. As time passes and the soil becomes wet, the force of gravity becomes the dominant force causing water to move.

Answer:

33% yield

Explanation:

6.26/18.81 =0.33280170122 = 33%