Can somebody plz help answer these questions correctly thanks!!! :D (doesn’t have to be long) :3

WILL MARK BRAINLIEST WHOEVER ANSWERS THIS FIRST :DD

Answer:

False

Explanation:

A series circuit is one that is all connected

Answer:

Kinetic energy has a direct relationship with mass, meaning that as mass increases so does the Kinetic Energy of an object. ... Objects with greater mass can have more kinetic energy even if they are moving more slowly, and objects moving at much greater speeds can have more kinetic energy even if they have less mass

Answer:

Alessandro Giuseppe Antonio Anastasio Volta (Italian: [alesˈsandro ˈvɔlta]; 18 February 1745 – 5 March 1827) was an Italian physicist, chemist, and pioneer of electricity and power[2][3][4] who is credited as the inventor of the electric battery and the discoverer of methane. He invented the Voltaic pile in 1799, and reported the results of his experiments in 1800 in a two-part letter to the President of the Royal Society

Answer:

O, C,  Sn, Sr

Explanation:

As per the periodic table trends, atomic radius of an atom deceases from left to right and increases down a group this is so because across a period or from left to right, number of protons increases that increases the nuclear charge and nuclear radius decreases. Down the group, atomic radius increases because energy level increases and distance between nucleus and outermost orbital increases.

The elements in order from smallest to largest atomic radius are:

O, C,  Sn, Sr because as per the periodic table trends, oxygen (O) fall into right side of Carbon (C) in the periodic table and Strontium (Sn) and Tin (Sn) fall into down the group where Tin (Sn)  is on the right side of Strontium (Sn).

Hence, the correct order is "O, C,  Sn, Sr".

When a molecule is separated into its components it forms atoms as molecules are made up of same or different kind of atoms.

An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether solid,liquid , gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

The protons are positively charged and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.

Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.

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Answer:

False

Explanation:

Valence electrons depend of their what group they're in.

Answer: false

Explanation:

Because I looked it up

Word equation

Magnesium + Oxygen = Magnesium oxide

Symbolic equation

Mg + O2 = MgO

Balanced symbolic equation

2Mg + O2 = 2MgO

Answer:

Carbon tetrachloride is non-polar and so the only kind of force that can exist is induced dipole.

Answer:

Balanced equation: H₂S₂O₇  +  H₂O →  2H₂SO₄

Theoretical yield of H₂SO₄: 1322 g

Percent yield for the H₂SO₄ production: 33%

Explanation:

First of all, we determine the balanced equation:

H₂S₂O₇  +  H₂O →  2H₂SO₄

Stoichiometry says that 1 mol of oleum reacts to 1 mol of water in order to produce 2 moles of sulfuric acid.

1.20 kg = 1200 g

We convert the grams to moles → 1200 g . 1mol/ 178.12g = 6.74 mol

Ratio is 1:2, so if we have 6.74 mol of oleum we can produce the double of moles of acid. (6.74 . 2) = 13.48 moles of acid.

This is the 100 % yield reaction, or it can be called theoretical yield.

We convert the moles to mass → 13.48 mol . 98g /1mol = 1322 g of acid may be produced.

In the problem, they said we produced 435 g of acid, so let's determine the percent yield.

Percent yield of reaction = (Produced yield / Theoretical yield) . 100

Percent yield of reaction = (435 / 1322) . 100 → 33 %

Explanation:

1) Einsteinium

2) Albert Einstein

Answer:

Einsteinium, Rutherfordium, Nobelium, Curium etc are some examples of elements named after scientists

Answer:

less polution

Explanation:

Answer:

+4

Explanation:

An atom is considered to be neutral before losing or gaining any electrons. They are neutral in charge because they initially have the same number of protons (with charge of +1 each) and electrons (with a charge of -1 each).

Consider charge in an electron like a balance, with positively charged protons on one side and negatively charged electrons on the other. When you have the same number of each, there is equal amounts of positive and negative charge so the atom is neutral with a charge of zero.

For example, potassium has 19 protons, and 19 electrons. This means it has

19 positive charges and 19 negative charges. If you take away one electron, it now has 19 positive charges and 18 negative charges. So there is one more positive charge than negative, which means it is now an ion (a charged atom) with a charge of +1. If you take away two electrons the charge becomes +2... 4 electrons the charge becomes +4.

Answer:

water was added to powdered rock

Explanation:

Answer:

ionic bonding

Explanation:

In ionic bonding, electrons are completely transferred from one atom to another.

Answer:Ionic bond

Explanation:

Ionic bond involves a complete transfer of electron. For eg. in NaCl, Na gives one of its electron to Cl.

Answer:

Nitrogen is a naturally occurring element that is essential for growth and reproduction in both plants and animals. It is found in amino acids that make up proteins, in nucleic acids, that comprise the hereditary material and life's blueprint for all cells, and in many other organic and inorganic compounds.

Explanation:

Amino acids and nucleic acids are both monomers containing nitrogen​ is a true statement as both monomers have nitrogen in them.

There are four major macromolecules that are used by the body of an organism that helps in getting energy and growth and development of the organism.

1. The building blocks of DNA or nucleic acid are nucleotides:

2. Amino acids are the building blocks of proteins:

Thus, the correct answer is - true.

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Answer:

Keq = 19

ΔG° = -7.3kJ/mol

Explanation:

Based on the chemical reaction:

Glucose 1-phosphate ⇄ Glucose 6-phosphate

The equilibrium constant, Keq is defined as:

Keq = [Glucose 6-phosphate] / [Glucose 1-phosphate]

Where [] are equilibrium concentrations of each substance

Replacing:

Keq = [0.19M] / [0.01M]

Keq = 19

Now, standard free energy change, ΔG° is defined as:

ΔG° = -RT ln K

Where R is gas constant 8.314J/molK

T is absolute temperature (25°C + 273.15K = 298.15K)

and K is equilibrium constant = 19

Replacing:

ΔG° = -8.314J/molK*298.15K ln 19

ΔG° = -7299J/mol

ΔG° = -7.3kJ/mol

Answer:

Francium is a chemical element with the symbol Fr and atomic number 87. Prior to its discovery, it was referred to as eka-caesium. It is extremely radioactive; its most stable isotope, francium-223, has a half-life of only 22 minutes.

Answer:

GAY-LUSSAC'S LAW.

Explanation:

P1 = 765 torr

T1 = 23°C = 296K

P2 = 560. torr

T2 = ?

(765 torr)/(296K) = (560. torr)/ T2

T2 = 226 K = -57°C

Ideal gas law is valid only for ideal gas not for vanderwaal gas. Therefore the new temperature is  -57°C. the law that is used over here is Gay-Lussac's Law.

Ideal gas equation is the mathematical expression that relates pressure volume and temperature. Ideal gas is only for ideal gas.

Mathematically the relation between Pressure, volume and temperature can be given as

PV=nRT

where,

P = pressure of gas

V= volume of gas

n =number of moles of gas

T =temperature of gas

R = Gas constant = 0.0821 L.atm/K.mol

P1 = 765 torr

T1 = 23°C = 296K

P2 = 560. torr

T2 = ?

Applying Gay-Lussac's Law

(765 torr)/(296K) = (560. torr)/ T2

T2 = 226 K = -57°C

Therefore the new temperature is  -57°C. the law that is used over here is Gay-Lussac's Law.

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Answer:

The solubility of ammonia is mainly due to the hydrogen bonding and not the reaction. Other common substances which are freely soluble in water because they can hydrogen bond with water molecules include ethanol (alcohol) and sucrose (sugar).

Answer:

Hydrogen Bonding

Explanation:

The solubility of ammonia is mainly due to the hydrogen bonding and not the reaction. Other common substances which are freely soluble in water because they can hydrogen bond with water molecules include ethanol (alcohol) and sucrose (sugar).

Answer:

Genetic variation

Explanation:

measure of the genetic differences that exist within a population. 

Answer:

We know (by definition) that: 1 yr ≈ 525948.77 min.

We can set up a proportion to solve for the number of minutes.

1 yr / 714 yr ≈ 525948.77 min / x min

Now, we cross multiply to solve for our unknown x:

x min ≈ (714 yr / 1 yr) * 525948.77 min → x min ≈ 375527421.78000003 min

Conclusion:

714 yr ≈ 375527421.78000003 min

Explanation:

Hope it is helpful....

[tex]714 \: y \times \frac{12 \: months}{1 \: years} \times \frac{30.417 \: days}{1 \: month}[/tex]

[tex] = 260612.856 \: days[/tex]

[tex]260612.856 \: days \times \frac{24 \: h}{1 \: day} \times \frac{60 \: min}{1 \: h}[/tex]

[tex] = 375282512.6 \: minutes[/tex]

Answer:

Strongest intermolecular force

Hydrogen Bonding (H-Bonding)

Hydrogen bonds are caused by highly electronegative atoms. They only occur between hydrogen and oxygen, fluorine or nitrogen, and are the strongest intermolecular force.

Hydrogen bonds have the largest dissociation energy.

Hydrogen bond is formed when hydrogen is attached to some electronegative elements like O, N and F.

The dissociation energy is the energy required to break a bond and form two atomic or molecular fragments, each with one electron of the shared pair.

Hydrogen bonds are caused by highly electronegative atoms. They only occur between hydrogen and oxygen, fluorine or nitrogen and are the strongest intermolecular force.

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Answer:

bohr didn't mention abt sub shells that are in main shells

Answer:

A: False

Explanation:

B: True

C: part of earths mantle.

Answer:

is the process of water movement through a plant and its evaporation from aerial parts, such as leaves stems and flowers.

Answer:

well in easy terms... its just like the loss of water from the leaves or other parts of a plant due to evaporation

Explanation:

Water is necessary for plants but only a small amount of water taken up by the roots is used for growth and metabolism.

Answer:

30.62 L

Explanation:

From the question given above, the following data were obtained:

Initial volume (V₁) = 55 L

Initial pressure (P₁) = 3.2 atm

Initial temperature (T₁) = 520 K

Final temperature (T₂) = 760 K

Final pressure (P₂) = 8.4 atm

Final volume (V₂) =?

The final volume of the gas can be obtained as follow:

P₁V₁ / T₁ = P₂V₂ / T₂

3.2 × 55 / 520 = 8.4 × V₂ / 760

176 / 520 = 8.4 × V₂ / 760

Cross multiply

520 × 8.4 × V₂ = 176 × 760

4368 × V₂ = 133760

Divide both side by 4368

V₂ = 133760 / 4368

V₂ = 30.62 L

Therefore, the new volume of the gas is 30.62 L

Answer:

3, 4 ,1

Explanation: