Below are pictures of a coastline and a river. Which of the following changes to the Earth's surface can be caused by wind and water

Answer:

add the isotopes atomic masses and divide by their number

Explanation:

$8.09

Because you multiply and subtract to get the answer

Answer:

3.7 x 10^23

is the right answer

Answer:

Metamorphic rock

Explanation:

metamorphic rocks do not get hot enough to melt they just get denser if they did they would become igneous rocks.

Answer:

The correct answer is letter A. Condensation nucleii

Answer:

An electric field is the physical field that surrounds each electric charge and exerts force on all other charges in the field, either attracting or repelling them.

______________

meow

Answer:

Formula for acceleration is

V-U÷T

In the given information

V=16

U=4

T=4

Acceleration =16-4/4

=3 metre per second ^2

Explanation:

Answer:

The total amount of mechanical energy is merely the sum of the potential energy and the kinetic energy. This sum is simply referred to as the total mechanical energy

Explanation:

Andresiaは13.1マイルの長さのレースを走っています。彼はすでに1.1マイル走っています。アンドレスが走るために残っているマイル数を再確認する

Answer:

Phosphorus

Sulphur

And chlorine are non metals when bonded covalently gain electronic configuration of argon

Like PCl3

SO2 and HCl

Explanation:

Answer:

From the negative terminal of the battery to the positive one

Explanation:

   DC is just  dirrect current that has e- flowing from the negative terminal to the positive.

Answer:

Rocks sink in water their density is greater than the density of the water.

Explanation:

The density is 997 kg/m³ or about 1 g/cm³. Anything with a density greater than that will sink in water.

Due to the fact that a rock has a higher density than water, it sinks in liquid. Objects with a higher density than the surrounding fluid will sink because density is the mass of an object per unit volume.

Due to the fact that rocks often have a higher density than water, the gravitational pull of the rock is larger than the buoyant pull of the water. The rock defeats the buoyant force as a result, sinking to the bottom. According to Archimedes' principle, the principle of buoyancy asserts that an object submerged in a fluid feels an upward buoyant force equal to the weight of the fluid it displaces.

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Answer:

See explanation

Explanation:

I know that we usually associate the sp3 hybridization to the tetrahedral shape. This is common in molecules such as CH4. So it may sound somewhat strange that NH3 molecule has an sp3 hybridized nitrogen atom and a trigonal pyramidal geometry.

Let us recall that the central nitrogen atom in NH3 has a lone pair of electrons. These lone pairs causes more repulsion than bond pairs. As a result of the presence of this lone pair, the bond angle in the NH3 molecule is distorted away from the expected 109.7 degrees in tetrahedral geometry and the bonding groups are now arranged in a trigonal pyramidal geometry(with bond angle less than 109.7 degrees) to minimize electron pair repulsions.

Answer:

Because of the presence of lone pairs in nitrogen it further adds to its reactivity. Hence nitrogen is more electronegative than chlorine. ... Chlorine is less reactive than nitrogen in other words nitrogen is more reactive than chlorine

Explanation:

Brainliest plzzzzzzzzzzzzzzzzzzz

Answer: They would both be pushed backward. (READ EXPLANATION)

Explanation:

Since your question has an error in it, I will provide two answers. If they were standing on their feet, they would not move. if they're both standing on skateboards, they would both move backwards because they have no friction on the ground. if both of them are standing on the same skateboard and pushing against each other, they would not move.

Answer:

[tex]V=6.54L[/tex]

Explanation:

Hello!

In this case, since we are given the density in g/mL, the first step is to compute the mass in grams as shown below:

[tex]m=50.0lb*\frac{454g}{1lb} =22700g[/tex]

Now, we use the density to compute the volume as follows:

[tex]V=22700g*\frac{1mL}{0.917g} =24.755mL[/tex]

Finally, we convert to gallons:

[tex]V=24755mL*\frac{1L}{1000mL} *\frac{1gal}{3.7854L}=6.54L[/tex]

Best regards!

Answer:

30.17 × 10²³ atoms

Explanation:

Given data:

Number of moles of lead = 5.01 mol

Number of atoms = ?

Solution:

Avogadro number:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

For example,

18 g of water = 1 mole = 6.022 × 10²³ molecules of water

1.008 g of hydrogen = 1 mole = 6.022 × 10²³ atoms of hydrogen

In given question:

1 mole = 6.022 × 10²³ atoms

5.01 mol × 6.022 × 10²³ atoms / 1 mol

30.17 × 10²³ atoms

Answer:

994,491 were caught in 2017

According to the solubility concept, when sugar is mixed along with water,  chemical equilibrium is reached as the dissolved sugar molecules are evenly distributed throughout the solution.Thus, the correct option is A.

Solubility is defined as the capability of a substance which is basically  a solute forming a solution with another substance. There is an extent to which a substance is soluble in a particular solvent. This is generally measured as the concentration of a solute  which is present  in a saturated solution.

The solubility  depends on the composition of solute and solvent ,its pH and presence of other dissolved substance. It is also dependent on temperature and pressure which is maintained.

Thus, when sugar is mixed with water, equilibrium is reached when the dissolved sugar molecules are evenly distributed throughout the solution.Thus, the correct option is A.

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Answer:

Each scientist made an important, but unrelated, contribution. Scientists built on the previous work of other scientists to make new discoveries. Most of the discoveries were made by chance and did not depend on prior knowledge.

Explanation:

i hope i helped * :3

Answer:

I think its Kr

Explanation:

sorry if I'm wrong

Bromine (Br₂) has the highest melting point among the given elements. Therefore, option (A) is correct.

Intermolecular forces can be described as the attractive and repulsive forces that develop between the molecules of a substance. These forces are responsible for most of the chemical and physical properties of matter. The intermolecular forces between the molecules are Vander Waals forces.

Forces that exist between the molecules themselves are known as intermolecular forces. The particles of solids and liquids are held together by intermolecular forces.

The intermolecular forces are Dipole-Dipole Interactions, Ion-Dipole Interactions, Ion-Induced Dipole Interactions, Dipole-Induced Dipole Interaction, and Dispersion Forces.

As the size of the atoms increases the strength of the intermolecular force also increases and a large amount of energy will be required to break bonds. Since Bromine has the largest size among the all other elements. Therefore, Bromine will have the highest melting point.

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Your question was incomplete, but the complete question was,

On the basis of the strength of intermolecular forces, which of the following elements would be expected to have the highest melting point?

A) Br₂

B) Cl₂

C) F₂

D) N₂

Answer:

B.

Explanation:

The atomic masses listed on the periodic table are a weighted AVERAGE of an element's isotopes.

Answer:

a

2 Mg(s) + O2(g) → 2 MgO(aq)

Explanation:

Answer:

It is a chemical change

Explanation:

Fat is a triglyceride. Triglycerides form soap when they come into contact with sodium hydroxide.

Now, we know that a chemical change is one in which a new substance is formed and it is not easily reversible. Heat is also given out or absorbed in the process.

Now the combination of sodium hydroxide and fat yields a new substance called soap. The appearance of the new substance conclusively proves that a chemical change has taken place.

The density of a substance for which 4.78 x 106 L of the substance has a mass of 1.50 x 107 kg is 3.138 x 10¹².

Density is the mass per unit volume. Density is s a scalar quantity. It is calculated by dividing the mass by volume. It is denoted rho, a Greek letter. It is denoted by a small d.

rho = m / v

rho = density

m = mass

V = volume

The mass is calculated in grams and kilograms. The volume mass and density are interrelated if two entities are given, the third can be calculated.

Given, that the volume of a substance is 4.78 x 10⁶ L

The mass of the substance is 1.50 x 10⁷ kg

So, put the values in the formula

d = m / v

d = 1.50 x 10⁷ / 4.78 x 10⁶

d = 3.138 x 10¹²

Thus, the density of a substance is 3.138 x 10¹².

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Answer:45kg

Explanation:

The momentum of a car with a mass of 1500 kg traveling north at a speed of 30 m/sec is 45000 kg-m/s.

The term momentum is defined as the product of the mass and velocity of an object. It is a vector quantity, having a magnitude and a direction. If m is an object's mass and v is its velocity, then the object's momentum p is: mass × velocity.

When you throw a ball at someone, and it hits him square in the face. It shows how difficult it would have been to put a stop to the thing. A baseball flies through the air. A large truck is on the move. A bullet fired from such a weapon.

Given:

Mass of the car, m = 1500 kg

Speed of the car, v = 30 m/s (towards north)

We have to find The momentum of the car,

Solution:

Let p is the momentum of an object. It can be calculated by the product of mass and its velocity. The formula to find it is given by :

p = m × v

= 1500 × 30

= 45000

Thus,  the momentum of a car with a mass of 1500 kg traveling north at a speed of 30 m/sec is 45000 kg-m/s.

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Answer:

52.63%

Explanation:

We can obtain the mole fraction from the formula;

partial pressure = mole fraction * total pressure

mole fraction = partial pressure/total pressure

Partial pressure of Hydrogen = 5.00

Partial pressure of Carbon-dioxide=  4.50

Total gas pressure = 9.50

Mole fraction of Hydrogen = Partial pressure of Hydrogen/ Total gas pressure

                                           =    5.00/9.50

                                           =   0.5263

                                           = 52.63%