Compared with warm fronts, cold fronts are?

Answers

Answer 1

Answer: Warm fronts is the transition zone that marks where a warm air mass starts replacing a cold air mass. The movement is from southwest to southeast while Cold fronts is where a cold air mass is pushing into a warmer air mass. They move fast, up to twice as fast as a warm front.

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During diffusion, when the concentration of molecules on both sides of a membrane is the same, the molecules will (1 point). move across the membrane to the outside of the cell. stop moving across the membrane. continue to move across the membrane in both directions. move across the membrane to the inside of the cell.
A cube measures 3.0 cm on each side and has a mass of 25g what is the density of the cube?
How reactive is the element iodine.

What is the chemical formula for one phosphorus atom, three chlorine atoms, one oxygen atom?

Answers

O=PCL3 that is what it is

Subatomic particle that has mass nearly equal to that of a proton, but carries no electrical charge

Answers

The answer is the neutron. It is a subatomic particle with no net electric charge and its mass is approximately equal to the mass of a proton. Protons and neutrons constitute the nucleus of an atom and collectively they are called as nucleons.

Which elements have the most similar chemical properties?A. Si, As, and Te
B. Mg, Sr, and Ba
C. N2, O2, and F2
D. Ca, Cs, and Cu

Please explain your answer in this case

Answers

The elements that have the most similar chemical properties are $\boxed{{\text{B}}{\text{. Mg, Sr, Ba}}}$ .

Further Explanation:

Periodic table:

Elements are arranged in increasing order of their atomic numbers in various rows and columns. Such tabular arrangement is called a periodic table. The elements with the same chemical and physical properties lie in the same group. Horizontal rows are called periods and vertical columns are called groups. There are 18 groups and 7 periods in a periodic table.

Elements are also classified as metals, non-metals, and metalloids in this table. The elements placed at the left side of the table are metals while those placed at the right of the table are non-metals. Metalloids are elements that are placed between metals and non-metals.

Magnesium, strontium, and barium belong to group 2A of the periodic table. These have two valence electrons in their outermost shell. So these three elements have similar chemical properties. But the other given elements do not lie in same group so they have different chemical properties.

Therefore option B is the correct answer.

Learn more:

Which ion was formed by providing the second ionization energy? brainly.com/question/1398705
Write a chemical equation representing the first ionization energy for lithium: brainly.com/question/5880605

Answer details:

Grade: High School

Subject: Chemistry

Chapter: Periodic classification of elements

Keywords: magnesium, strontium, barium, Mg, Ba, Sr, periodic table, elements, group, period, chemical properties, similar.

Chemical properties are characteristics of a substance that describe how it interacts or reacts with other substances, leading to changes in its composition or structure. The correct answer is C. N₂, O₂, and F₂.

These properties help define the chemical behavior of a substance and are determined by its chemical composition and atomic/molecular structure.

N₂ (nitrogen gas), O₂ (oxygen gas), and F₂ (fluorine gas) belong to the same group/family on the periodic table, known as group 16 or the oxygen family. Elements within the same group tend to have similar chemical properties because they have the same number of valence electrons, which are the electrons involved in chemical bonding.

In the case of N₂, O₂, and F₂, they all have six valence electrons. This similarity in electron configuration leads to comparable chemical behavior, including their tendency to form covalent bonds, their reactivity, and their ability to gain electrons to achieve a stable octet.

Therefore, the correct answer is C. N₂, O₂, and F₂.

For more details regarding chemical properties, visit:

brainly.com/question/1728902

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In terms of energy, how would you classify the following chemical reaction?2Cu + O2 -> 2CuO + 315 kJ
a.endothermic
b.exothermic
c. both endothermic and exothermic
d. neither endothermic nor exothermic
2. The total amount of energy before and after a chemical reaction is the same. Thus, energy is
a. created
b. destroyed
c. conserved
d. the same as mass

Answers

1. Answer;

- Exothermic reaction

Explanation;

-Exothermic reactions are types of chemical reactions in which heat energy is released to the surroundings. Since enthalpy change is the difference between the energy of products an that of reactants. It means that in an exothermic reaction the energy of products is less than that of products. In this case an energy of 315kJ is released to the surroundings.

2. Answer;

Conserved

-The total amount of energy before and after a chemical reaction is the same. Thus, energy is conserved.

Explanation;

-According to the law of conservation of energy, energy is neither created nor destroyed. Energy may change form during a chemical reaction. For example, energy may change form from chemical energy to heat energy when gas burns in a furnace. However, the exact amount of energy remains after the reaction as before, which is true for all chemical reactions.

Answer:

Whole test

Explanation:

An archaeologist discovered some charcoal at an excavation site. He sent the samples to a lab for C-14 dating, knowing that the half-life of C-14 is approximately 5,600 years. The lab reported that the charcoal had 1/8 the amount of C-14 in it that a living sample would have. How many years oldwas the charcoal?
A. 700 years
B. 1,867 years
C. 8,400 years
D. 16,800 years
E. 44,800 years

Answers

here we assume that disintegration has occur so the normal t½ formular will not be used
mathematically we..⅛×5600 =700
therefore it is about 700years option A

Rainforests are typically responsible for global oxygen turnover

Answers

false...........................................

Answer:

false

Explanation:

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What type of substance reacts with limestone (CaCO3) and produces carbon dioxide gas?