Which chemical equation best represents the law of conversation of matter?

Answer:

D

Explanation:

They make their own food by combining a gas called carbon dioxide, which they get from the air, with water from the soil. ... To power the process, the plant uses the energy of sunlight. A green pigment in the leaves called chlorophyll traps the Sun's energy

A. Two parents are required to produce this offspring.

Answer:

Explanation:

Climate - Abiotic

Grass - Biotic

Seaweed - Biotic

Soil - Abiotic

Coyote - Biotic

Altitude - Abiotic

Precipitation - Abiotic

Termite - Biotic

Spider - Biotic

Sunlight - Abiotic

Answer:

Ecosystems

Explanation:

C IS THE ANSWER BECAUSE HELIUM HAS JUST 2 ATOMS

Helium is an element which belongs to a family called noble gas.

Among the noble gas element, helium is the only member with two (2) electrons.

Helium is a s-block element. S-block can only accommodate a maximum of 2 electrons. The two (2) electrons that helium has complete its outermost shell as seen from its electronic configuration below:

Since the outermost shell of helium is completely filled, it is thus included in the noble gas family (i.e group 18).

Other members of the this group include: Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe), Radon (Rn)

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Answer:

True

Explanation:

Throughout the universe, it's natural for energy to flow from one place to another. And unless people interfere, thermal energy — or heat — naturally flows in one direction only: from hot toward cold. Heat moves naturally by any of three means. The processes are known as conduction, convection and radiation.

The statement, "Thermal energy “flows” from warmer areas to colder areas. Heat is a measure of this flow" is true.

The energy created by heat is referred to as thermal energy. It is created when a body's temperature rises. As a result, the molecules, and atoms start to sprint, move quickly, or crash into one another.

When a substance's temperature rises, heat, a type of energy, is created. Temperature, thermal energy, and heat all relate to one another. Heat always moves from a hot body to a cold body.

The heat or thermal energy in the body increases as the temperature rises, causing the movement of the atoms to accelerate and the atoms to collide. Heat is a variable of thermal energy.

Thus, the statement is true.

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Answer:

I believe the answer is B oxygen

Explanation:

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:D...........

.............

Answer:

Yes, there are comets between Mars and Jupiter.

Comets are cosmic snowballs of frozen gases, rock and dust that orbit the Sun.

Asteroids are small, rocky objects that orbit the Sun.

Answer:

D I think

Explanation:

According to the concept of specific heat capacity, the heat capacity of water is 1666.67 J/Kg°C.

Specific heat capacity is defined as the amount of energy required to raise the temperature of one gram of substance by one degree Celsius. It has units of calories or joules per gram per degree Celsius.

It varies with temperature and is different for each state of matter. Water in the liquid form has the highest specific heat capacity among all common substances .Specific heat capacity of a substance is infinite as it undergoes phase transition ,it is highest for gases and can rise if the gas is allowed to expand.

It is given by the formula ,

Q=mcΔT

Substitution of values in the above equation, c=30000/0.3×(85-25)

c=1666.67 J/kg°C

Thus, the heat capacity of water is 1666.67 J/Kg°C.

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Answer:

Terms in science are derived from greek and latin words because precise meaning and precise use of words is crucial in all forms of scientific communication, it helps to be able to make new medical terms from Latin and Greek roots whose meanings do not alter over time

Explanation:

Answer:

yes there is a comet

Explanation:

The statement, that describes the overall charge of the nucleus is "+3."

The atom is made up of a small nucleus surrounded by electrons that move. The nucleus is a positively charged area in the centre of the atom that is made up of closely packed protons and neutrons.

The nucleus includes protons, which have a positive charge equal to the negative charge of an electron. Neutrons, which have nearly the same mass but no charge as protons, may also be found in the nucleus.

The nucleus is made up of three neutrons and three protons. Neutrons have no charge. The charge on the nucleus results from the charge on its protons. As a result, the total charge of the nucleus is +3.

Hence the correct answer is C.

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Explanation:

how to understand the difference between acid and base

Answer:

g = (0.789 g/mL) (200.0 mL) = 158

The mass of ethyl alcohol that exactly fills 400 ml of container is 315.6 grams.

Formula of density is given as , density =mass/volume

∴mass=density×volume

From the formula it is evident that density and mass are directly proportional while density and volume are inversely proportional.

From the given data, volume=400 ml and density =0.789 g/ml

∴by the formula,mass=density×volume

mass=0.789×400

mass=315.6 g

Mass and volume are extensive properties that depend on the amount of substance while density is an intensive property and does not depend on amount of substance.

Intensive properties  are properties which are independent,wherein size of particles does not change.These properties cannot be easily computed and are not easily identifiable.

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Answer:

6m/s

Explanation:

I've done this problem

Answer:

in side

Explanation:

Answer:

Any element in group 18 has eight valence electrons (except for helium, which has a total of just two electrons). Examples include neon (Ne), argon (Ar), and krypton (Kr).

200 mi/hr

s= d/t 600 miles/3 hrs = 200 miles/hr

BTW I Love NASCAR

Answer:

I think is C

Explanation:

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Taking into account the definition of isotopes, the correct answer is option C: chlorine-35, chlorine-37

First of all, all atoms are composed of a central nucleus in which there are positively charged particles, the protons, and neutrally charged particles, the neutrons, around which other negatively charged particles that are electrons move.

That is, atoms are made up of a nucleus (made up of protons and neutrons) and a shell made up of electrons.

On the other side, isotopes are atoms whose atomic nuclei have the same number of protons but different numbers of neutrons.

The atomic number (Z) indicates the total number of protons in the nucleus of a given atom, while the atomic mass (A) is obtained by adding the number of protons and neutrons in a given nucleus.

So, in other words, each isotope of the same element has the same atomic number (Z) but each has a different mass number (A). This means that the different isotopes of the same atom differ from each other only by the number of neutrons. So if a neutron is added to an atom, it becomes an isotope of that chemical element.

So, in this case, the correct answer is option C: chlorine-35, chlorine-37, because the two chlorine atoms correspond to the same element but have different atomic masses, whose values ​​are 35 and 37.

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Answer:

1. Fe + H2SO4 = FeSO4 + H2

iron + sulfuric acid = duretter + hydrogen

2. Mg + 2 HNO3 = Mg(NO3)2 + H2

Magnesium + nitric acid = magnesium nitrate +hydrogen

3. Zn + 2 HCl = ZnCl2 + H2

Zinc + hydrogen chloride= zinc chloride+ hydrogen

Answer:

okay let me know when i can help, ill be happy too help

Answer: Because it is the principal source of the nitrogen in the soil, nitrogen that plants need to grow, nitrogen fixation is one of the most important biochemical processes on Earth. Nitrogen within living organisms is eventually decomposed and converted to atmospheric nitrogen.

Answer: Nitrogen fixation is a process by which molecular nitrogen in the air is converted into ammonia or related nitrogenous compounds in soil.

Explanation:

Answer:

The answer is A

Explanation: