Which Chemical Reaction is balanced?

Answer:

PHOSPHITE ION is the correct answer.

Explanation:

Hope this helped Mark BRAINLIEST!!!

As sedimentary rocks are formed from the accumulation of sediment, fossils can be buried and preserved over time, leading to the formation of fossil-rich sedimentary rocks.

What is Fossils?

Fossils are the remains or traces of prehistoric plants, animals, and other organisms that are preserved in rocks. Fossils provide valuable insights into the evolution of life on Earth, as they can help scientists to understand the types of organisms that lived in the past, how they evolved, and how they interacted with their environment.

Rocks that form from lava, such as igneous rocks, typically do not contain fossils because the high temperatures involved in the formation of lava can destroy organic matter, including the remains of plants and animals.

When lava flows onto the surface of the Earth, it can quickly cool and solidify, forming an igneous rock. This rapid cooling process does not allow for the preservation of any organic material that might have been present in the lava, including fossils.

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Answer:

Density = mass / volume.

If this is an ideal gas then 1mol will take up 22.4L of volume (fact about ideal gases you should remember)

Since you have 1mol then you know the volume of the gas that you have (22.4L)

Now, just convert 1mol of CO to grams.The ptable tells you that the mass of 1 mol of C is 12g and the mass of 1 mol of O is 16g. So the mass of 1 mol of CO is......... :):)

Now you have the mass and the volume, so just divide :) enjoy

Answer:

90 kilojoules of heat energy

Explanation:

I don't really know why this is just the answer to it on my quiz so if someone else can explain.

Answer:

its B

Explanation:

yes

Answer:

BBBBB

Explanation:

B

Answer:

cal is an abb

Explanation:

meaning calories

Answer:

The Coriolis effect is an apparent deflection in the paths of moving objects caused by Earth's faster speed near the equator than near the poles. In the solar system, the greatest expression of this effect occurs in planetary atmospheres. On Earth, for example, the air around us moves freely above the ground.

Explanation:

Answer:

The correct answer is number 2. Elliptical, Spiral, Irregular.

Explanation:

Unfortunately, you did not attach the passage. Without the passage, we do not know what its content is.

So we are going to answer this question with our own knowledge.

The types of galaxies by their ability to form new stars, from most to least activity are "Elliptical, Spiral, Irregular."

That is the way astronomers classify galaxies in scientific terms. These scientists consider that the smallest galaxies or dwarf galaxies have approximately 100 million stars. On the other hand, giant galaxies have billions or trillions of stars. That immense is our universe.

Scientists still studying the universe and the galaxies to understand the way galaxies are formed.

Answer:

yes it is hilarious

Explanation:

good to find another republican lol

Answer:

Gas is one of the four fundamental states of matter (the others being solid, liquid, and plasma). A pure gas may be made up of individual atoms (e.g. a noble gas like neon), elemental molecules made from one type of atom (e.g. oxygen), or compound molecules made from a variety of atoms (e.g. carbon dioxide).  

Explanation:

Answer:

There are 140.9 grams in 2.393*10²⁴ aotms of Cl.

Explanation:

Avogadro's Number or Avogadro's Constant is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023*10²³ particles per mole. Avogadro's number represents a quantity without an associated physical dimension, so it is considered a pure number that allows describing a physical characteristic without an explicit dimension or unit of expression. Avogadro's number applies to any substance.

Then you can apply the following rule of three: if 6.023*10²³ atoms are contained in 1 mole of the compound, 2.393*10²⁴ atoms are contained in how many moles?

[tex]amount of moles=\frac{2.393*10^{24} *1 mole}{6.023*10^{23} }[/tex]

amount of moles= 3.973

If the molar mass of Cl is 35.453 [tex]\frac{g}{mole}[/tex], then the amount of mass that contains 3.973 moles can be calculated as:

3.973 moles*35.453 [tex]\frac{g}{mole}[/tex]= 140.85 grams ≅ 140.9 grams

There are 140.9 grams in 2.393*10²⁴ aotms of Cl.

Answer:

Water

Explanation:

Water is a chemical molecule structurally consisting of two hydrogen atoms and one oxygen atom to form the chemical formula, H2O. It is geometrically a bent shape due to electron position in each atom that makes it up.

Water is the only molecule on Earth that exists in the three different states of matter. This means that water can exist in a solid, liquid and gaseous form.

- Water as a SOLID is called ICE

- Water as a LIQUID is called WATER

- Water as a GAS is called VAPOUR

Explanation:

bro this question looks like Astrophysics

By using the universal gravitational law, the gravitational force between the lander and the planet is 688.4 × 10³ N. The acceleration due to gravity of the lander is 6.25 m/s² . The slight changes in gravity may be due to the change with different latitudes of the planet.

Gravitational force is the force by which an object attracts other objects into its center of mass. According to universal gravitational law, the gravitational force can be calculated for two masses m1 and m2 at a distance of r with gravitational constant G as follows:

g = G m1m2/r²

Apply the given values of mass and orbital radius to the equation as follows:

g = (6.647 × 10⁻¹¹ N m² Kg⁻²) (1.1 × 10⁵ Kg × 7.6×10²⁴ Kg ) / (9 × 10⁶ m)²

  =  688.4 × 10³ N.

The acceleration due to gravity of the lander = force /mass

                                                                           =   688.4 × 10³ N /1.1 × 10⁵Kg

                                                                           = 6.25 m/s²

The actual force of gravity may change from the may slightly change from the calculated value because different latitudes will experience different gravity.

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Answer:

Explanation:

Fungicides are agents that are used to prevent or eradicate fungal infections from plants or seeds.

Answer:

Fungus on the crops can be controlled by using:-

Start by planting healthy stock.  

Choose planting sites based on plant needs.  

Avoid overhead watering.  

Water early in the day.  

Don't crowd plants.  

Don't work a wet garden.  

Treat with a trusted, proven fungicide.

Explanation:

hope it helps!

:)

Answer:

170 g

Explanation:

w/w% concentration = mass of solute/ mass of solution * 100

mass of solute = x

mass of solution = 200 g

w/w% concentration =  15 % by mass

15 = x/200 * 100

15 = 100x/200

200 * 15 = 100x

x = 200 * 15/100

x = 2 * 15

x = 30g

But mass of solution = mass of solute + mass of solvent

mass of solute = 30g

mass of solvent = mass of solution  - mass of solute

mass of solvent = 200 g - 30 g

mass of solvent = 170 g

Answer:

Explanation:

As per table gastric juice has pH of 1.7 which is the strong acid. If you remember, 0-7 range determines acids and litmus paper confirms that by turning red.

So correct choice is C.

Answer:52!

Explanation:

Answer:

C7H6O2

Explanation:

Let;

68.8% of Carbon represents 68.8g

4.95% of Hydrogen represents 4.95g

26.25% of Oxygen represent 26.25g

Next, we convert each gram value to mole value by dividing by their respective molar mass {C = 12, H = 1, O = 16}

C = 68.8/12 = 5.73 mol

H = 4.95/1 = 4.95 mol

O = 26.25/16 = 1.64 mol

Next, we divide each mole value by the smallest (1.64mol)

C = 5.73 ÷ 1.64 = 3.49

H = 4.95 ÷ 1.64 = 3.02

O = 1.64 ÷ 1.64 = 1

Next, we multiply each ratio by 2 to obtain our simplest whole number ratio (empirical formula)

C = 3.5 × 2 = 7

H = 3.02 × 2 = 6

O = 1 × 2 = 2

Hence, the ratio of C, H and O is 7:6:2 and the empirical formula of benzoic acid is C7H6O2

Answer:

Salts do not conduct electricity at the solid state since the ions are in a fixed position in the lattice. However, at the molten state or in solution, the ions are free and they can move within the liquid phase to serve as electrons shuttles and therefore, they become conductive.

Explanation:

Answer:

B. Radiation

Explanation:

Lol this weekend I got a rlly bad sunburn and ik a lot ab the sun

The method of heat transfer occurs when your skin feels hot outside on a sunny, summer day is radiation. Therefore, option B is correct.

Energy that emanates from a source and moves through space at the speed of light is referred to as radiation. This energy has wave-like qualities and is accompanied by an electric field and a magnetic field. Radiation may also be referred to as electromagnetic waves.

As a mutagen, radiation has the potential to eventually cause cancer. Radiation has the power to kill cells or harm the DNA within them, which impairs the cells' capacity for reproduction and may ultimately result in cancer. High energy particles flow through your body when radiation is present.

The DNA in our cells can be harmed by radiation. Acute Radiation Syndrome (ARS) or Cutaneous Radiation Injuries can result from high radiation doses (CRI). Cancer may develop later in life as a result of high radiation doses.

Thus, option B is correct.

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Answer:

B: There are only so many ways matter can arrange itself within that infinite universe.

The idea of a parallel universe was supported by Brian Greene on the basis that there are only so many ways matter can arrange itself within that infinite universe.

Matter is anything that has mass and occupy space. The universe as we know it is filled with matter. The theory of multiple universe holds that there could be another universe apart from this one that we know.

This theory was supported by Brian Greene on the basis that there are only so many ways matter can arrange itself within that infinite universe.

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Answer:

Kinetic energy is directly proportional to the mass of the object and to the square of its velocity: K.E. = 1/2 m v2. If the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.