I'm kind of stuck with this problem.​

Answer:

B

Explanation:

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The molarity of the diluted solution : 1.1 M

Dilution is the process of adding solvent to get a more dilute solution.

The moles(n) before and after dilution are the same.

Can be formulated :

[tex]\tt n_1=n_2\\\\M_1.V_1=M_2.V_2[/tex]

M₁ = Molarity of the solution before dilution  

V₁ = volume of the solution before dilution  

M₂ = Molarity of the solution after dilution  

V₂ = Molarity volume of the solution after dilution

M₁=5

V₁=0.75

V₂=3.5

[tex]\tt M_2=\dfrac{M_1.V_1}{V_2}\\\\M_2=\dfrac{5\times 0.75}{3.5}\\\\M_2=1.07\approx 1.1[/tex]

Answer:

constant speed or a horizontal line is an rest

Explanation:

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:

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:

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

Explanation:

In CO₂ there's 2 double bonds.

Structure:

O=C=O (linear) (180°)

Therefore,

Option C is correct✔

Answer:

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

hope it helps!

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:

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:

a

Explanation:

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:

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

Answer:

E--> mc2

E--> 0.007 x (3x108)2

E--> 6.3 x 1014J

Explanation:

Answer:

The reactants of photosynthesis are Carbon Dioxide and water. The products are Glucose (or starch/sugar) and Oxygen. The autotroph uses light energy from the sun in order to complete this process. In the formula, the arrow is the light energy.

Explanation:

Answer:

I've inserted an image.

Explanation:

Hope this helps!

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Answer:

Ca-197

Ga-135

Cu-128

Fe-126

Br-114

Answer:

y

Explanation:

Answer:

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　ﾟ    you  are  the Impostor.  。　.

 '  　0 Impostors remain    　。

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Explanation:

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:

there are elemental molecules, made from one type of atom (pure), example: oxygen and there are compound molecules, made from more then one type of atom, for example carbon dioxide

Answer:

7.5031055900621

Explanation:

D= M/V

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:

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:

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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Answer:

20 grams

Explanation:

40g= 300

x = 150

cross multiply, 40*150/300

6000/300= 20g

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.