If a reaction is endothermic,
1 point
More energy is released when the bonds in the products are formed than is used to
break the bonds in the reactants
The temperature increases
The same amount of energy is used to break the bonds of the reactants as is released
when the bonds in the products are formed
О O
It takes more energy to break the bonds of the reactants than is released when the
bonds in the products are formed

Answer:

This involves negatively charged particles (electrons) jumping to positively charged objects. When you rub the balloons against the fabric they become negatively charged. They take some of the electrons from the fabric and leave them positively charged.

Explanation:

Negative charges attract to positive charges. If a balloon is not rubbed with the wool cloth, it has an equal amount of negative to positive charges, so it will attract to a rubbed balloon. When both balloons are rubbed with the wool cloth, the both receive negative charges, so they will repel each other.

Answer:

The s-, p-, and d-block elements of the periodic table are arranged into 18 numbered columns, or groups. The elements in each group have the same number of valence electrons. As a result, elements in the same group often display similar properties and reactivity.

Explanation:

On the periodic table, a group refers to a vertical column of elements that share similar chemical properties.

For the main groups, the characteristic do the elements have in common is valence electron configuration and chemical reactivity.

On the periodic table, a group refers to a vertical column of elements that share similar chemical properties. These elements are arranged in such a way that they have the same number of valence electrons, which are the electrons in the outermost energy level (shell) of their atoms. The number of valence electrons is a critical factor in determining the chemical behavior and reactivity of elements, as it governs their ability to form chemical bonds with other elements.

Main group elements, also known as representative elements, are located in the s-block and p-block of the periodic table. These elements are found in Groups 1, 2, and 13 to 18. Each main group is labeled with a number from 1 to 18.

Here are the main characteristics that elements in the same main group (vertical column) have in common:

1. Valence Electron Configuration: Elements in the same main group have identical valence electron configurations. For example, elements in Group 1 (alkali metals) all have one valence electron in their outermost energy level (ns¹), while elements in Group 18 (noble gases) have a full outermost energy level.

2. Chemical Reactivity: Due to their identical valence electron configuration, elements in the same group show similar chemical reactivity. They tend to form similar types of chemical bonds and react similarly with other elements to achieve a more stable electron configuration.

3. Periodic Trends: Main group elements within a group exhibit predictable trends in their physical and chemical properties as you move from the top to the bottom of the group. For example, the atomic radius tends to increase, ionization energy tends to decrease, and metallic character tends to increase as you go down a group.

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Answer:

An example of elevation is a plane flying at 36,000 feet above the ground. An example of elevation is a pope being raised to the position of saint. An example of elevation is a ballet dancer leaping three feet in the air. ... At 8,850 m (29,028 ft), the summit of Mount Everest is the highest elevation on Earth.

Explanation:

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Answer:

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Explanation:

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Answer:

The gas will occupy a volume of 1.702 liters.

Explanation:

Let suppose that the gas behaves ideally. The equation of state for ideal gas is:

[tex]P\cdot V = n\cdot R_{u}\cdot T[/tex] (1)

Where:

[tex]P[/tex] - Pressure, measured in kilopascals.

[tex]V[/tex] - Volume, measured in liters.

[tex]n[/tex] - Molar quantity, measured in moles.

[tex]T[/tex] - Temperature, measured in Kelvin.

[tex]R_{u}[/tex] - Ideal gas constant, measured in kilopascal-liters per mole-Kelvin.

We can simplify the equation by constructing the following relationship:

[tex]\frac{P_{1}\cdot V_{1}}{T_{1}} = \frac{P_{2}\cdot V_{2}}{T_{2}}[/tex] (2)

Where:

[tex]P_{1}[/tex], [tex]P_{2}[/tex] - Initial and final pressure, measured in kilopascals.

[tex]V_{1}[/tex], [tex]V_{2}[/tex] - Initial and final volume, measured in liters.

[tex]T_{1}[/tex], [tex]T_{2}[/tex] - Initial and final temperature, measured in Kelvin.

If we know that [tex]P_{1} = 121\,kPa[/tex], [tex]P_{2} = 202\,kPa[/tex], [tex]V_{1} = 2.7\,L[/tex], [tex]T_{1} = 288\,K[/tex] and [tex]T_{2} = 303\,K[/tex], the final volume of the gas is:

[tex]V_{2} = \left(\frac{T_{2}}{T_{1}} \right)\cdot \left(\frac{P_{1}}{P_{2}} \right)\cdot V_{1}[/tex]

[tex]V_{2} = 1.702\,L[/tex]

The gas will occupy a volume of 1.702 liters.

Answer:

D

Explanation:

The goal in this set up is to make sure all units cancel each other.

Since we need to go from grams to atoms, our final unit should be atoms.

Using method of elimination, let's see why other options are wrong.

A - Although 'g' is cancelled out, we are left with moles^2 / atoms

B - Although 'g' is cancelled out, we are left with moles^2 / atoms

C - Although 'mol' is cancelled out, we are left with g^2 / atoms

Answer: The answer is 4320

Explanation:

I got the answer correct

Answer:

then it is 5

Explanation:

because i said it is

Answer:

I think the heat on the surface or the fire under the dish cost evaporation coz when the water got heat tge water evaporate or go to the upper part of dish and cool down then back to the bottom.

Explanation:

Plss correct me if im wrong