How many Oxygen atoms are present in this
molecular formula: 2CO2?

Answer:

b c

Explanation:

Answer:C

Explanation:

Answer:

oop oof

Explanation:

Answer: chemical substance

Explanation:

f = 5.08 x 10¹⁴/s

E=3.366 x 10⁻¹⁹ J

Radiation energy is absorbed by photons

The energy in one photon can be formulated as

[tex]\large{\boxed{\bold{E\:=\:h\:.\:f}}}[/tex]

Where

h = Planck's constant (6,626.10⁻³⁴ Js)

f = Frequency of electromagnetic waves

f = c / λ

c = speed of light

= 3.10⁸

λ = wavelength

I will give example number 1, and for subsequent numbers, the steps will be the same

For NaNO₃ with λ=590 nm=5.9 x 10⁻⁷m

Frequency(f) :

[tex]\tt f=\dfrac{3.10^8}{5.9\times 10^{-7}}=5.08\times 10^{14}/s[/tex]

Energy(E) :

[tex]\tt E=6.626.10^{-34}\times 5.08\times 10^{14}=3.366\times 10^{-19}~J[/tex]

Answer:

The answer will be listed below.

Explanation:

An acid is a substance that produces (H+) as the only positive ion when mixed with water. A base is a substance that produces (OH–) as the only negative ion when mixed with water.

Answer:

An acid increases the concentration, A base is a substance that releases hydroxide

Explanation: A base donates electrons and accepts protons, and acid is a substance that donates protons.

Answer:

i.e. mass of 1 mole of glucose, C6H12O6 = (6 × 12.01 + 12 × 1.01 + 6 × 16.00) g = 180.18 g (using atomic weight data to 2 decimals) 1 mole of carbon atoms weighs 12.01 g and there are 6 moles of C atoms in 1 mole of glucose, so the mass of carbon in 1 mole of glucose = 6 × 12.01 g = 72.06 g.

Answer: (1)CaSO4 -> (2)O2 + (1)CaS

Explanation: edge 2020 chem

Answer: Evaporation

Explanation: the process of turning from liquid into vapor

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Actually Welcome to the Concept of the Chemical bonds.

Due to the presence of dipole-dipole forces, polar covalent molecules like water tend to be _____ at room temperature.

The answer is Liquids

Water tends to be liquids at the room temperature.

Answer: Boron

Explanation:

hope this helps

Answer: Boron.

Explanation: The trend of atomic radius increases as we go from right to left on a periodic table, so since Boron is further left, Boron has a slightly larger radius.

Answers:

1. People generally experience rapid growth for a second time between the ages of 15 and 20

2. The endocrine system contains the pituitary, adrenal, and thyroid glands.

3. The nuclear membrane disappears in the third stage of cell division?.

Explanation 1:

Between the ages of 15 and 20, puberty causes the release of multiple hormones, which causes rapid growth among other things.

Explanation 2:

The reproductive system contains the ovaries (female) and testes (male).

The endocrine system contains the pituitary, adrenal, and thyroid glands.

The circulatory system contains three independent systems that work together, the heart (cardiovascular), the lungs (pulmonary), and arteries, veins, coronary and portal vessels (systemic).

The respiratory/pulmonary system contains the nose, mouth, throat (pharynx), voice box (larynx), windpipe (trachea) , airways (bronchi) , and lungs.

Explanation 3:

Mitosis is the process in cell division where the nucleus divides into two nuclei, each with an identical set of chromosomes.

Interphase: occurs when the cell begins to replicate the nuclear DNA material

Stage 1 - Prophase: chromosomes begin to undergo a condensation process that will continue until metaphase. The spindle also begins to form as the two pairs of centrioles move to opposite poles.

Stage 2 - Prometaphase:  Chromosomes are pulled in opposite directions by microtubules growing out from both poles of the spindle until balanced.

Stage 3 - Metaphase:  The centromeres of all the cell's chromosomes line up at the equator of the spindle.

Stage 4 - Anaphase: The chromosomes move away from one another to opposite poles of the spindle.

Stage 5 - Telophase and Cytokinesis: The chromosomes reach the poles, the nuclear membrane then reforms, and the chromosomes begin to decondense. This is followed by cytokinesis, or the division of the cytoplasm into two daughter cells.

Most of my sources say that the nuclear membrane occurs during prophase, but the stages are listed in this order. Regardless, your answer would be A. The nuclear membrane disappears.

I hope this helps!

Answer:

B

Explanation:

Explanation:

Change the way you get around. ...

Be mindful of eating habits. ...

Grow your own food or buy it locally. ...

Embrace secondhand shopping. ...

Replace standard products with energy efficient versions. ...

Buy recycled products. ...

Spread the word. ...

Stop using plastic water bottles.

Answer:

hope it's help u

Explanation:

Stunning Ways to Save the Environment from Destruction

Change the way you get around. ...

Be mindful of eating habits. ...

Grow your own food or buy it locally. ...

Embrace secondhand shopping. ...

Replace standard products with energy efficient versions. ...

Buy recycled products. ...

Spread the word. ...

Stop using plastic water bottles.

Answer:

I think that the previous answer will help you with this one, Newton´s laws explain it because of the action-reaction law, the resulting forces will be balanced or overloaded in one object, depending of the mass acceleration/speed or force applied to one object.

Explanation:

Answer:

Explanation:

Since electrons are particles that are in constant movement in a wave-like motion, is impossible to know exactly their position and velocity at all times. That's why instead of defining an orbit for them we define an atomic orbital, which is a location in space where the probability of finding an electron is high (therefore, is an electron dense zone). Since this zone has not defined limits (the wave function characterizing the orbital extend from the nucleus to infinity), the further we go from the nucleus the less dense this "cloud" is.

There is about a 90 percent probability of finding the electron  within a sphere of radius 100 pm surrounding the nucleus.  Thus, we can represent the 1 s orbital by drawing a boundary surface diagram that  encloses about 90 percent of the total electron density in an orbital, and the shape of this orbital is a sphere.

The boundary surface diagrams of p orbitals, for example, will have the shape of two lobes on opposite sides of the nucleus, that means that within this two lobes we have a 90 percent probability of finding the electron, and so on.

Answer:

Yes. It is definitely correct

Answer:

Propane, octachloro- | C3Cl8 - PubChem

The name of C3Cl8 is octachloropropane. It is a covalent bond.

Covalent bonds are formed when two atoms share electrons. In the case of octachloropropane, the carbon atoms share electrons with the chlorine atoms. The electrons are shared unequally, so the bond is polar covalent.

The name octachloropropane is derived from the Greek words "octo" (eight) and "chloro" (chlorine). The prefix "octa" refers to the number of chlorine atoms in the molecule. The suffix "propane" refers to the three carbon atoms in the molecule.

Find out more on covalent bonds at https://brainly.com/question/3447218

#SPJ6

Answer:

A) 1 & 2 only

Explanation:

Seeing that the chemicals present are in question one I take it you are asking about that question.

Decreasing the concentration causes a decrease in reaction process and also the total amount of product you would get out of the given reaction

Decreasing the temperature causes the molecules in this reaction to become less excited or reactive, thus causing the reaction to slow down

Answer:

No, It is not okay to pretend on social media.

Explanation:

No, it is not okay for people to post fake vacation pics and other fake info on social media. This is very wrong, as -

Answer:

it is not ok because there are other people that will look at those pictures and say aww i wish i were them but we all need to exept who we are

hope this helped

mark me brainliest please

Explanation:

Answer:

A. Sympathetic

and

C. Parasympathetic

Explanation:

Ap3x

Answer:

Earplugs

Explanation:

Because sound waves absorb most sound, the sound is coming from the earplugs which creates the most sound waves rather than water, tissue paper, and air.  Hope i helped :)

Answer:

Earplugs

Explanation:

Answer:a

Explanation:

Answer:

C

Explanation:

One must be willing to self disclose for them to self disclose.

Explanation:

Structure of Carbon dioxide is in the attachment.

Here,

Hybridization of Carbon is sp

Bond angle 180°

Structure = linear

Answer:

O=C=O

Explanation:

this is all you need

Answer:

Fall or autumn

Explanation:

Answer:

The structure is called Propyl ethanoate

The balanced equation for the reaction is

3CuCl₂(aq) + 2Al(s) = 2AlCl₃(aq) + 3Cu(s). The correct option is - D) 3CuCl2(aq) + 2Al(s) = 2AlCl3(aq) + 3Cu(s)

From the question,

We are to determine which of the given equation for the described reaction is balanced.

The described reaction is the reaction between aqueous copper (II) chloride and solid aluminum to produce aqueous aluminum chloride and solid copper.

That is,

CuCl₂(aq) + Al(s) = AlCl₃(aq) + Cu(s)

Now, we will balance the above equation, using the smallest whole number coefficients

The balanced equation for the reaction is

3CuCl₂(aq) + 2Al(s) = 2AlCl₃(aq) + 3Cu(s)

Hence, the balanced equation for the reaction is

3CuCl₂(aq) + 2Al(s) = 2AlCl₃(aq) + 3Cu(s). The correct option is - D) 3CuCl2(aq) + 2Al(s) = 2AlCl3(aq) + 3Cu(s)

Learn more here: https://brainly.com/question/18443511