which of these is a element

The standard free energy change of the reaction is -150.14 kJ and the reaction is spontaneous.

A spontaneous reaction is a reaction in which further supply of energy is not required once the reaction ha gotten underway. The standard enthalpy change of a reaction is obtained from;

ΣΔG°reactants - ΣΔG°products

Having applied this and from the values of the standard free energy of each specie, the standard free energy change of the reaction is -150.14 kJ and the reaction is spontaneous.

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Answer:

171.63734

Explanation:

Used a calculator lol

Answer:

OIL o RIG sr

2Sr will be oxidation because it'll loses (2) electrons to O2. So, oxidised to form 2SrO

O2 will be reduction because it'll gain (2) electrons from Sr

Sr is oxidised. Thus, reducing agent because it causes O2 to be reduced.

O2 is reduced. Thus, the oxidising agent because it causes Sr to be oxidised.

Reducing agent = Sr

Oxidising agent = O2

Hope this helps!

Answer:

40 J

Explanation:

W= Fd = 50*0.8 = 40 J

80 cm = 0.8 m

Answer:

light

Explanation:

I'm not sure to my answer but hope it helps if it is correct:)

Answer:

a dark-colored fur to catch their prey

Explanation:

In areas covered with snow, the temperatures are too low. Therefore, animals surviving in these areas require thick fur or body insulation to ensure their body temperature is regulated. The snow is white in color and therefore, being white in color helps the animals camouflage hence not visible to the predators.

Having a dark color, this will only expose these animals to their predators since the areas are covered with white snow. They will be easily traced by their predators and maybe selected out by nature.

Answer:

bases which are not soluble in water do not give the hydroxyl ions and so they are treated differently from soluble bases called alkalis.

STP signifies standard temperature and pressure. These conditions are at 1 atmospheric pressure and 0 degrees Celsus, It has been said that at these conditions, one mole of a gas molecule is  22.4 liters of volume.

1.50 mol Cl2( 22.4 L / mol) = 33.6 L Cl2

When a writer makes claims about a particular subject, the claim shows the opinions they have formed about the topic. It will also show their beliefs about the subject matter. Thus, the correct answers are A and D.

Claims in literature are statements of an assertion that are written to validate an argument or line of thought.

Writers of non-fiction use claim to present their thoughts or the position of others as regards a subject matter while fiction writers use the same to present the views of their characters or narrators.

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Answer:

Carnivores and omnivores are secondary consumers. Many carnivores eat herbivores. Some eat omnivores, and some eat other carnivores. Carnivores that consume other carnivores are called tertiary consumers.

E.g

Felines, ranging from domestic cats to lions, tigers, and other large predators.

Some canines, such as the Gray Wolf

Hyenas.

ferrets.

Polar Bears.

Pinnipeds ( seals, sea lions, walruses, etc.)

Birds of prey, including hawks, eagles, falcons, and owls.

Answer:

Yes there is turns and strait points

Explanation:

Answer:

40. B

41. B

Explanation:

Copper is a good insulator and conducts electricity.

Answer: 2 m/L

Explanation: If there is 50g in every m/L and you need 100g, you can take the 100g / 50g, and you have 2, meaning two sets of 50 grams, or in this case to m/L of medicine, because each m/L has 50 grams of medicine in it.

Answer:

As the angle the plane makes with the horizontal is increased, the magnitude of the force of static friction between the block and the plane (2) increases

Explanation:

Since the static frictional force between the block and the plane is given by F = μN where

μ = coefficient of static friction and

N = normal force on plane = component of weight of block perpendicular to the plane = Wcosθ where

W = weight of block and

θ = angle of inclined plane

Now, F = μN

F = μWcosθ

Since μ and W are constant, we see that

F ∝ cosθ and cosθ ∝ θ

So, F ∝ θ

Since the static frictional force is directly proportional to the angle the plane makes with the horizontal, when the angle the plane makes with the horizontal is increased, the static friction between the block and the plane increases.

So, As the angle the plane makes with the horizontal is increased, the magnitude of the force of static friction between the block and the plane (2) increases

Answer:

Lunar

Otherwise its solar, but im 99% sure its Lunar

Answer:

Solar Eclipse.

Explanation:

not exactly sure

Answer:

Maria

Explanation:

Answer:

Maria loves Jarren more is the answer.

Chemical reaction has to do with the interaction of substances to form a new substance sometimes involving the release of energy.

The term chemical reaction has to do with the interaction of substances to form a new substance sometimes involving the release of energy.

The following completes each of the equations shown;

1. Calcium + Magnesium sul-fide → calcium sul-fide + magnesium

2. Sodium + Silver chloride → sodium chloride + silver

3. Iron I I sul-fide + potassium → Potasium sul-fide + iron

4. /Ba/rium + Aluminum ni.trate → /Ba/rium n.itrate + aluminium

5. Potassium iodide + chlorine → Potassium chloride + i.odine

6. Zinc + Lead I V chloride → Zinc I I chloride + lea.d

7. Silver + sul-furic acid →Silver sul-fate + water

8. /Ba/rium + water → /Ba/rium hydroxide + hydrogen

9. T.in + hyd.rochloric acid → Ti.n IV chloride + hydrogen

10.G.allium br-omide + fl-uorine → Ga.lium fl-uoride + br-omine

11.Water + potassium → potassium hydroxide + hydrogen

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Answer:

Metal expands when heated. Length, surface area and volume will increase with temperature. ... Thermal expansion occurs because heat increases the vibrations of the atoms in the metal

Explanation:

hope this help :)

Answer:

Length, surface area and volume will increase with temperature.

Explanation:

Metal expands when heated. Length, surface area and volume will increase with temperature. ... Thermal expansion occurs because heat increases the vibrations of the atoms in the metal

The Mass percent of sugar in the sample was 66% while the Total percent recovery is 95.7%

An equation is an expression used to show the relationship between two or more variables and numbers.

Given the sample had a mass of 53.5g, hence:

Mass percent of sugar in the sample = (35.2/53.5) * 100% = 66%

Total percent recovery = [(35.2 + 16)/ 53.5] * 100% = 95.7%

The Mass percent of sugar in the sample was 66% while the Total percent recovery is 95.7%

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Answer:

It is a model of the atom that has electrons surrounding the nucleus

Step by step explanation:

Answer:

c. are energy relationships between the protons of the reacting atoms.

Explanation:

Answer:

Matter is any substance that has mass and takes up space by having volume. Mixture is a substance made by mixing other substances together.

Matter is anything that has mass and occupies space.

Mixtures are substance composed of two or more constituents in physical combination.

Matter is anything that has mass and occupies space.

Everything in the universe is composed of matter.

Matter exists in three states:

A mixture is a substance which is made up of two or more constituents physically combined together.

Mixtures are either homogenous or heterogeneous.

Examples of mixture are brass and salt solution.

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Answer: yeah it’s just a picture with it filled out ‍♀️

Explanation:

Answer:

hello :3

A cold is a contagious upper respiratory infection that affects your nose, throat, sinuses and trachea (windpipe).

Explanation:

have a nice day :3

Answer:

its B

Explanation:

your welcome brainliest and 5 star

Answer:

magnetic Flux ropes

Explanation:

Magnetic flux ropes (also known as coronal loops and solar prominences) sit on the surface of the sun, with matter and energy flowing through them, for hours or days.

Answer:

wish it helps anything else comment at my answer

Answer:

Intermolecular forces

Explanation:

Intermolecular forces cause surface tension.

Source info:
"Surface tension, capillary action, and viscosity are unique properties of liquids that depend on the nature of intermolecular interactions."

(11.S: Liquids and Intermolecular Forces (Summary)https://chem.libretexts.org )

Surface tension is said to be the result of the attraction between the particles present on the surface layer of the liquid matter. It is caused by intermolecular interactions. Thus, option b is correct.

Intermolecular interactions are the forces that are said to be secondary forces and allow the molecules to bond and interact together by the attractive and repulsive forces between the ions and the atoms.

The hydrogen bonds, ion-dipole, dipole-dipole, and dispersion forces are intermolecular interactions. They are not within but in between the molecules. They give rise to the surface tension in liquids that act cohesive and bind the various molecules in liquid together.

Therefore, option b. the intermolecular forces cause surface tension in liquids.

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Answer:

Your answer is D, Abiotic.

Hope this helped you!