pls solve.............................................

Answer:

Answer: positive energy

Explanation: goggle it bro

Answer:

0.22moles of carbon dioxide

Explanation:

Given parameters:

Number of molecules of carbon dioxide  = 1.33 x 10²³molecules

Unknown:

Number of moles   = ?

Solution:

To solve this problem, we use the relationship below:

   1 mole of a substance contains 6.02 x 10²³moleccules;

So;

    1.33 x 10²³molecules will contain [tex]\frac{1.33 x 10^{23} }{6.02 x 10^{23} }[/tex]   = 0.22moles of carbon dioxide

Answer:

9.12 * 10^20 photons

Explanation:

Given that;

E=n⋅h⋅ν

Where;

E= energy of the electromagnetic radiation

n = number of photons

h = Plank's constant

ν = frequency of electromagnetic radiation

Hence;

n = E/hν

n = 3.46 × 10 -19/6.6 * 10^-34 * 575 * 10^-9

n = 3.46 × 10 -19/3795 * 10^-43

n=  9.12 * 10^20 photons

Answer:

argon has no tendency to gain nor lose electrons.

Explanation: it's a noble gas

First, let's count mole of 10 g Calcium Carbonate

mole = Mass / Molecular Mass

Calcium Carbonate = CaCO₃

Molecular Mass = Ar Ca + Ar C + (3 x Ar O)

Molecular Mass = 40 + 12 + (3 x 16)

Molecular Mass = 100

next

Mole of CaCO₃ = 10 gram / 100

Mole of CaCO₃ = 0,1 mol

then equal the reaction equation first

 CaCO₃ + 2 HCl  ==>  CaCl₂ +  CO₂  +  H₂O     (Equal)

To count the mass of carbon dioxide that produced we must know the mole of CO₂ first

we can count by coefficient comparison

mole CO₂ = [tex]\frac{coefficient \ of \ CO_2}{coefficient \ of \ CaCO_3}[/tex]  x mole CaCO₃

mole  CO₂ =  (1/1)  x 0,1 mole

mole  CO₂ = 0,1 mole

so

Mass of  CO₂ = mole  CO₂ x  Molecular Mass of  CO₂

Mass of  CO₂ = 0,1 mole x (12 + (2 x 16))

Mass of  CO₂ = 0,1 mole x 44

Mass of  CO₂ = 4,4 g

so, mass of carbon dioxide that's produced by 10 g of calcium carbonate on reaction with chloride acid is 4,4 g.

Answer:

Sodium cyanide

Explanation:

Chemical formula: NaCN

Molar mass: 49.0072 g/mol

Appearance: white solid

Odor: faint almond-like

Sodium cyanide is the chemical name of NaCN. The naming scheme makes certain that each compound has a distinct and unmistakable identification.

Chemical naming, which is done in accordance with a set of standardised norms and conventions, is the process of giving names to chemical compounds. For scientists, these names act as a common vocabulary for discussing particular chemical compounds.

NaCN is the chemical name for NaCN. The binary compound represented by this formula is made up of the elements sodium (Na) and cyanide (CN). Chemical symbols are used to represent each element in a compound and to depict the compound's makeup as a whole.

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Your question is incomplete but most probably your full question was,  

What is the chemical name of NaCN?

The solubilty product (Ksp) of PbCl₂ : Ksp = [Pb²⁺][Cl⁻]²

Given

PbCl₂ compound

Required

The solubilty product (Ksp)

Solution

Ksp is the product of ions in an equilibrium saturated state

For reaction :

AₓBₐ (s) ⇔ aAᵃ⁺ (aq) + b Bᵇ⁻ (aq)  

Can be formulated :

Ksp = [Aᵃ⁺] ᵃ [Bᵇ⁻] ᵇ  

For PbCl₂ :

PbCl₂(s)⇔Pb²⁺(aq) + 2Cl⁻(aq)

Ksp = [Pb²⁺][Cl⁻]²

Explanation:

C. Nobel gas are very stable because in their valance shell maximum number of electrons are present

Answer: option a,d

Explanation:

Just took the quiz

Answer:

Explanation:

If one mole of carbon monoxide has a mass of 28.01 g and one mole of carbon dioxide has a mass of 44.01 g , it follows that the reaction produces 44.01 g of carbon dioxide for every 28.01 g of carbon monoxide.

C3H8(g) + 5O2(g) → 3CO2(g) + 4H2O(g)

88.

88.0g C3H8 x (1 mol C3H8 / 44.0g C3H8) x (4 mol H2O / 1 mol C3H8) x (18.0g H2O / 1 mol H2O) = 144g H2O.

total mass co2 is 44 mass of given co2 is 88 in such a way nom of moles we get is 2. CO2 - ATOMIC MASS - 12 + 2 x 16 = 44 .

How many grams of C2H6 are required to produce 88 grams of CO2 when it is burned in the excess of oxygen? Explanation: 1 gram mole of C2H6 = 2 gram moles of CO2. Explanation: The number of each element is equal on both sides. 9.

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Answer:

2-Butyne

Explanation:

The given compound name is 2-Butyne.

According to the IUPAC rule, the compound is consist of 4 carbon atoms with triple bond at second carbon atom, so its name will be 2-Butyne or but-2-yne. 2-Butyne is an alkyne which is produced artificially at standard temperature and pressure.

Hence, the correct answer is "2-Butyne".

Answer:

The awnser is a single called organism

Explanation:

The above picture shows a a single-celled organism. Specifically, it is a protozoan with many cilia, which are the small white hair-like projections.

Answer:10 meters

Explanation:

because that what he speaded

Answer:

I just did it home slice the first one's Ag+ and Zn2+ and the second one is A

Explanation:

I just did the assignment

Answer:

ag+ and zn2+

Explanation:

second question is A

Answer:

d because it seems correct

Explanation:

d

Answer: The Law of Conservation of Mass

In other words, the mass of any one element at the beginning of a reaction will equal the mass of that element at the end of the reaction. If we account for all reactants and products in a chemical reaction, the total mass will be the same at any point in time in any closed system.

In a chemical reaction, mass can neither be created nor be destroyed.

Answer:

Either

8.2

×

10

5

is already in standard notation

or you want

820

,

000

Explanation:

"Standard notation" is often used as a synonym for scientific nation, in which case the given format is already in standard notation.

However, some people use "standard notation" for what we might think of as "common form"

To convert from scientific notation to common form move the decimal point in the mantissa (in this case

8.2

) to the right the number of places indicated by

10

's exponent (in this case 5). [If the exponent is negative the decimal point will be moved to the left].

Answer:

aa

Explanation:

Matter are anything that is made up of atoms. The quantity of matter can be observed only on the basis of mass and volume calculation. Therefore, the correct option is option A.

Matter is a substance that has some mass and can occupy some volume. The matter is mainly used in science. Matter can be solid, liquid or gas.

Matter is anything that is made up of atoms. Anything around us that can be physically seen and touched are matter. Ice, water and water vapors are example of matter.

So as we saw that matter has some mass so mass can be measured in gram only. Mass can also be represented as number of molecules. We also saw that matter occupy some volume and that volume is measured only in liter. A sedimentary rock layer is between 10,000 and 10,500 years old. Sedimentary rock is a type of rock.

Therefore, the correct option is option A.

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An investigation into an unknown object in space resulted in the following observations: It was discovered to be an asteroid, It revolves around the sun, which is in the third position.

It is a small, rocky substance that rotates around the sun and is found in the asteroid belt, which is located between the orbits of Mars and Jupiter, and its size varies, with some still in fragments and others having a large structure.

Hence, an investigation into an unknown object in space resulted in the following observations: It was discovered to be an asteroid, It revolves around the sun, which is in the third position.

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Answer:

8

shell 1 =2

shell 2 =8

shell 3 =8

shell 4 =2

Answer:

Explanation:

I hope it's help

Answer:

5 mL

Explanation:

When an object is completely submerged in a liquid , it displaces liquid equal to its volume . Therefore level of liquid is raised in a container containing liquid .

When the irregularly shaped object is totally submerged the volume of water in a graduated cylinder increases from 10 mL to 15 mL.

Initially volume of water contained = 10 mL

volume of water + volume of irregular shaped object = 15 mL

volume of irregular shaped object = 15 - 10 = 5 mL .

Answswer its a

Explanation:

i don't think it's any of these because divergent boundaries pull away from each other and convergent boundaries run into each other.

Answer:

where is the text? i can only help you if i have the text or story. sorry.

Explanation:

Answer:

D and A

Explanation:

While protons or electrons can be influenced by other charged particles, neutrons are not.

and

Neutrons are held tightly together with protons in the nucleus, so scientists could not observe the behavior of neutrons independently.

Answer:

we will all die bc plants make oxygen and and if we dont have oxygen then we die

Explanation:

Answer:

its b

Explanation:

look up graphs online, an you'll see it