PLS HELP ASAP I DONT HAVE TIME ONLY 5 MINUTES AND IM DOING OTHER THINGS HELPP

1. B. has twice as many atoms

2. D. has the same number of molecules

The mole is the number of particles(molecules, atoms, ions) contained in a substance  

1 mol = 6.02.10²³ particles

Can be formulated

N=n x No

N = number of particles

n = mol

No = Avogadro's = 6.02.10²³

1.

3.011 × 10²³ atoms of Na, 1.0 mole of Carbon

1 mole Carbon =  6.02.10²³ atoms, so 1 mole of Carbon B. has twice as many atoms of Na

2.

1.0 mole of H₂S (molar mass 334 g/mol), 1.0 mole of NH₃ (molar mass 17g/mol)

Both have the same number of moles, so they have the same number of molecules

1.0 mole of NH₃ D. has the same number of molecules as  1.0 mole of H₂S

Answer:

I think its digestive

Explanation:

............

Answer:

Protium

Explanation:

The hydrogen atom is the simplest of all atoms: it consists of a single proton and a single electron. In addition to the most common form of the hydrogen atom that is called protium, two other isotopes of hydrogen exist deuterium and tritium.

Answer: Hydrogen is a atom of the chemical element hydrogen.

Explanation:

Answer:

46.839728  grams of water

Explanation:

1 mole is equal to 1 moles H2O, or 18.01528 grams

18.01528 times 2.6 = 46.839728

There are 46.839728  grams h20 in 2.60 mol of the compound

Answer:

4.457 × 10²⁴ molecules H₂S

General Formulas and Concepts:

Chemistry - Atomic Structure

Explanation:

Step 1: Define

252.3 g H₂S

Step 2: Identify Conversions

Avogadro's Number

Molar Mass of H - 1.01 g/mol

Molar Mass of S - 32.07 g/mol

Molar Mass of H₂S - 2(1.01) + 32.07 = 34.09 g/mol

Step 3: Convert

[tex]252.3 \ g \ H_2S(\frac{1 \ mol \ H_2S}{34.09 \ g \ H_2S} )(\frac{6.022 \cdot 10^{23} \ molecules \ H_2S}{1 \ mol \ H_2S} )[/tex] = 4.45688 × 10²⁴ molecules H₂S

Step 4: Check

We are given 4 sig figs. Follow sig fig rules and round.

4.45688 × 10²⁴ molecules H₂S ≈ 4.457 × 10²⁴ molecules H₂S

Answer:

[tex]\boxed {\boxed {\sf 4.457*10^{24} \ molecules \ H_2S}}[/tex]

Explanation:

First, find the molar mass of H₂S

Use the Periodic Table to find the mass of hydrogen and sulfur.

To find the molar mass of H₂S, multiply the molar mass of the elements by the number of atoms of the element.

Add.

Next, find the number of moles in the sample (252.3 g)  Use the ratio of grams to moles.

[tex]252.3 / g * \frac{1 \ mol \ H_2S}{34.086 \ g }[/tex]

Multiply. The grams will cancel each other out.

[tex]\frac{252.3 / mol }{34.086 \ }=7.40186587 \ mol[/tex]

Finally, found the number of molecules using Avogadro's number (There are 6.022*10²³ molecules in 1 mole).

[tex]7.40186587 \ mol \ H_2S*\frac{6.022*10^{23} molecules \ H_2S}{1 \ mol \ H_2S}[/tex]

Multiply. The mole (mol) will cancel each other out.

[tex]7.40186587*{6.022*10^{23}\ molecules \ H_2S} = 4.45740363 *10^{24} \ molecules \ H_2S[/tex]

Round to the correct number of significant figures. The sample had 4 sig figs (2, 5, 2, 3), so round to 4 sig figs.

[tex]4.457*10^{24} \ molecules \ H_2S[/tex]

There are about 4.457 * 10²⁴ molecules of H₂S

Answer:

It must be a part of a eukaryote

Explanation:

Eukaryotic cells are larger than prokaryotic cells and have a “true” nucleus, membrane-bound organelles, and rod-shaped chromosomes. The nucleus houses the cell's DNA and directs the synthesis of proteins and ribosomes.

Answer:

B

Explanation:

ifhwndidbsnsdijwjsidbebejdidid

Answer:

Model D

Explanation:

Bohr's Model has a planetary look. Where the electrons are in an orbit.

Answer:

The answer is model D

Answer:

Identify the limiting reactant (limiting reagent) in a given chemical reaction.

Calculate how much product will be produced from the limiting reactant.

Calculate how much reactant(s) remains when the reaction is complete.

Answer:

Nitrogen gas is the limiting reactant

Hydrogen gas is the excess reactant

The theoretical yield is 425 g of ammonia

Explanation:

Equation of reaction: 3H2 + N2 ---> 2NH3

From the equation of reaction, 3 moles of hydrogen gas reacts with 1 mole of nitrogen to produce 2 moles of ammonia gas.

Molar mass of hydrogen gas = 2.0 g

Molar mass of nitrogen gas = 14.0 g

Molar mass of ammonia gas = 17.0 g

Number of moles of hydrogen gas in 250 g = 250/2 = 125 moles

Number of moles of nitrogen gas in 175 g = 175/14 = 12.5 moles

Mole ratio of Hydrogen to Oxygen = 125/12.5 = 10 : 1

Therefore, nitrogen gas is the limiting reactant.

Hydrogen gas is the excess reactant

14 g of nitrogen gas produces 17 × 2 g of ammonia = 34 g of ammonia

175 g will produce (34 × 175)/14 = 425 g of ammonia

Therefore the theoretical yield is 425 g of ammonia

Answer:

Calculate the number of moles of oxygen required to react exactly with 4.30 ... How many moles of NH3 can be made from 2.00 moles of Nz if you have excess Hz? ... 10. How many grams of water are made when 3.00 moles of butanol is combusted? ... If 50.0 g of calcium oxide were produced, how many grams of calcium ...

Answer:

41.44 g

Explanation:

First of all, we must put down the equation of the reaction;

[tex]CaO + H2O ----->Ca(OH)2[/tex]

Number of moles of CaO = 33g/56 g/mol = 0.59 moles

Number of moles of H20 = 10g/18 g/mol = 0.56 moles

Since the reaction is in 1:1 mole ration, H2O is the limiting reactant

Hence;

mass of Ca(OH)2 produced = 0.56 moles * 74 g/mol = 41.44 g

Explanation:

In CO₂ there's 2 double bonds.

Structure:

O=C=O (linear) (180°)

Therefore,

Option C is correct✔

Explanation:

Crystals often form in nature when liquids cool and start to harden. Certain molecules in the liquid gather together as they attempt to become stable. They do this in a uniform and repeating pattern that forms the crystal. In nature, crystals can form when liquid rock, called magma, cools.

Answer: Crystals often form in nature when liquids cool and start to harden. Certain molecules in the liquid gather together as they attempt to become stable. They do this in a uniform and repeating pattern that forms the crystal. In nature, crystals can form when liquid rock, called magma, cools.

Explanation: Can i have BrainLiest

Answer:

Ca-197

Ga-135

Cu-128

Fe-126

Br-114

Answer:

constant speed or a horizontal line is an rest

Explanation:

Answer:

16.49g

Explanation:

Given parameters:

Mass of Chlorine gas = 7.82g

Unknown:

Mass of NaI  = ?

Solution:

The reaction equation is given as:

            2NaI  + Cl₂  →  2NaCl + I₂  

To solve this problem, find the number of moles of the known specie first;

 Number of moles of Cl₂  = [tex]\frac{mass}{molar mass}[/tex]  

   Molar mass of Cl₂   = 2(35.5)  = 71g/mol

  Number of moles = [tex]\frac{7.82}{71}[/tex]   = 0.11mole

From the balanced reaction equation;

            2 mole of Cl₂ will react with 2 mole of NaI

          0.11 mole of Cl₂ will also react with 0.11mole of NaI

Mass of NaI  = number of moles x molar mass

  Molar mass of NaI  = 23 + 126.9  = 149.9g/mol

Mass of NaI  = 0.11 x 149.9 = 16.49g

Answer:

An anion has more electrons than protons, consequently giving it a net negative charge .

hope it helps!

Answer:

hydrgen = i think it is 4

oxygen = i think it is 3

Explanation:

Answer:

Explanation

hope this helps!

Answer:

7.5031055900621

Explanation:

D= M/V

Answer:

Rows and columns.

Explanation:

Each atom gives up some of its electrons to create a kind of sea of these randomly moving charged particles. It's these free-flowing electrons that make metals conductive.

Answer:

compounds , because they're combined

Answer:

The answer is A.) Compounds

Explanation:

Compounds are when the atoms of elements combine. When combined it creates a compound.

Answer: 12 moles of tin is 1,400 or D

It might also be C

Explanation:one mole of tin is 118.71 so that times 12 is equal 1,424 . Round 1,424 and it is 1,400

Answer:

1.34 moles SO₂(g)

Explanation:

At STP 1 mole of any gas occupies 22.4 Liters. So, for 30 Liters ...

moles SO₂(g) = 30L/22.4L·mol⁻¹ = 1.34 moles SO₂(g)

Answer:

The object Genesis sees is black.

Explanation:

The color an object reflects represents what the object's color is. For example, if a block reflects blue light, then only blue light is sent to our eyes, and hence we see the block as blue.

If an object absorbs all visible light waves, then, that means there's no visible light reflected, and we cannot see any color the object has. Hence, it is black in our eyes.

Hope this helped!

Answer:

fitness. the ability of an organism to survive and reproduce in its environment. adaptation. the inherited characteristic that increases an organism's chance of survival.

An inherited characteristic of an organism is called a heredity.

The term heredity refers to the genetic heritage passed down by our biological parents. It is the transmission of traits from one generation to another generation. These traits can be physical, such as eye colour, blood type or a disease, or behavioral.

Heredity is also called biological inheritance, is the exiting of of traits from parents to their offspring either through asexual reproduction or sexual reproduction.

Heredity is a process in which organisms develop characteristics from their parents. These characteristics are called traits. Inheritance is the transmission of information from one generation of individuals to the next.

Thus, An inherited characteristic of an organism is called a heredity.

To learn more about the heredity, follow the link;

https://brainly.com/question/869836

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