CHEMISTRY HIGH SCHOOL

When two continental plates of similardensities collide,
A. they remain level since densities in both plates are equal.
B. they both push back down into the mantle
C. one plate rides over the other one and forms a trench
D.they buckle upward and form mountains

Answers

Answer 1
Answer:

Answer:

D. They buckle upward and form mountains.

Explanation:

When two plates (either oceanic or terrestrial) converge and they are of similar density then they will crash into each other and form mountains. A great example of this is when India crashed into the Asian continent and the Himalayas were formed.

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Which element is capable of forming long chains by forming single, double, or triple bonds with itself?
Objects 1 and 2 float as shown in the beaker below. Object 1 barely floats while 2 floats above surface. The density of the liquid in the beaker is 3.2 g/cc. Which of the densities given below are possible values for the densities of the two objects?
Newton’s first law of motion was a giant leap forward in scientific thought during Newton’s time. Even today, the idea is sometimes difficult at first for people to understand.
The recipe for pumpkin pie calls for 3 tablespoons of flour and 1.5 cups of sugar for each pie. Which of the following conversion factors would be used to find out how many pies could be made from 7.5 cups of sugar.

Other planets have an atmosphere, but Earth's is unique because it has large amounts of _____.nitrogen
oxygen
water vapor

Answers

Earth has large amount of oxygen, which allows life to thrive on it. Other planets have significantly lower amounts of oxygen. Others have high concentration of hydrogen, and carbon dixoxide. They also have a very thin atmosphere, and thus very unregulated temperatures,

Other planets have an atmosphere, but Earth's is unique because it has large amounts of oxygen.

What covalent bond is phosphorus and oxygen

Answers

Covalent bond

When two atoms react, they form either of two kinds of bond, ionic bondsor covalent bonds.Ionic bonds are the type of bonds where there is transfer of electrons from one atom to another.  The electrons are removed and from one atom and attached to  another. A good example is salt which is composed of sodium and chlorine. Sodium readily loses one of its electrons and chlorine readily accepts it. Before losing the electron, sodium has a positive charge, but then becomes negatively charged after giving up the electron. Chlorine has a positive charge before gaining the electron but becomes negatively charged after gaining the electron. These opposite charges between sodium and chlorine attract the two elements together to form the ionic bond.

Covalent bonds are the kind of bonds formed when two atoms share electrons. Here there is sharing, none of the atoms loses an electron and none gains. A good example is water which is formed when oxygen  shares two electrons, each with an atom of hydrogen. The Oxygen atom forms two covalent bonds with the pair of hydrogen atoms.

Which particle makes the atom an unstable isotope?

Answers

The particle that makes the atom an unstable isotope is either excess proton or excess neutron.

What is Unstable isotopes?

Unstable isotopes are isotopes of an element that have an excess of either protons or neutrons in their atomic nucleus, making them prone to undergo radioactive decay.

Radioactive decay is the process by which an unstable atomic nucleus releases energy in the form of radiation to achieve a more stable configuration.

The specific particles that can make an atom an unstable isotope are:

Protons: If an atom has an excessive number of protons in its nucleus, it can become unstable.

Neutrons: Similarly, if an atom has an excessive number of neutrons in its nucleus, it can become unstable.

Thus, the particle that makes the atom an unstable isotope is either excess proton or excess neutron.

Learn more about unstable isotopes here: brainly.com/question/12108854

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Instability of an atoms nucleus can result from an excess of either neutrons or protons . So neutrons and protons .

How many significant digits are in the volume measurement 0.100 L? (a) 1 (b) 2 (C) 3 (d) 4 (e) none of the above

Answers

C is the answer. The 1 and the two zeros behind the one are significant digits.

Final answer:

The volume measurement 0.100 L consists of 3 significant digits, counting the non-zero digit and the zero after the decimal point.

Explanation:

In the volume measurement 0.100 L, there are 3 significant figures. Significant figures represent the precision of a measured value. In this case, the zeroes after the decimal point are 'leading zeroes' which are not counted as significant. The '1' is a non-zero digit, which is always significant. And the zero after '1' is a 'trailing zero' that comes after a decimal point, so it is also counted as significant. Therefore, the number of significant figures in 0.100 L is 3.

Learn more about Significant Figures here:

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ANSWER FAST WILL GIVE BRAINLISTAn ionic compound is typically made of A. two metals. B. two nonmetals. C. a metal and a nonmetal. D. none of the above.An ionic compound is typically made of A. two metals. B. two nonmetals. C. a metal and a nonmetal. D. none of the above.

Answers

The answer to your question is D. none of the above. Ionic compounds are compounds composed of ions, charged particles that form when an atom (or group of atoms) gains or loses electrons. (A cation is a positively charged ion; an anion is a negatively charged ion.) Covalent or molecular compounds form when elements share electrons in a covalent bond to form molecules. I hope this helps.

Answer:

The answer is C. a metal and a nonmetal.

Explanation:

A covalent compound is formed when an element shares its valence electron with another element. This bond is formed between two non metals.  Example:

An ionic compound is formed when one element completely transfers its valence electron to another element. The element which donates the electron is known as electropositive element and the element which accepts the electrons is known as electronegative element. This bond is formed between a metal and an non-metal.  Example:

Thus an ionic compound is typically made of a metal and a nonmetal.

In this equation, what should be the coefficients of the reactants and products?I2 + O2 ---> I4 O9

Answers

4 I₂+ 9 O₂ = 2 I₄O₉

Reactants :

I₂   ,   O₂

Products :

I₄O₉

hope this helps!
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