when liquid water changes into solid ice, it increases in ?

Answer:

Dicalcium phosphate. (I'm sure meant for the "o" to be an "a" for Calcium).

Explanation:

I hope this helps! :D Have a nice night!

Answer:

590 g CaCl₂

General Formulas and Concepts:

Chemistry - Atomic Structure

Explanation:

Step 1: Define

5.3 mol CaCl₂

Step 2: Identify Conversions

Molar Mass of Ca - 40.08 g/mol

Molar Mass of Cl - 35.45 g/mol

Molar Mass of CaCl₂ - 40.08 + 2(35.45) = 110.98 g/mol

Step 3: Convert

[tex]5.3 \ mol \ CaCl_2(\frac{110.98 \ g \ CaCl_2}{1 \ mol \ CaCl_2} )[/tex] = 588.194 g CaCl₂

Step 4: Check

We are given 2 sig figs. Follow sig fig rules and round.

588.194 g CaCl₂ ≈ 590 g CaCl₂

Answer:

First one: Yes, It can be negative.

Explanation:

First one: The reason you can have negative acceleration is that acceleration can slow down, or decelerate, causing the negative acceleration.

Answer:

See the answer below

Explanation:

From the equation, 1 mole of C requires 1 mole of O2 for a balanced reaction.

1 g of C will not exactly react with 1 g of O2 because the 1 g of each of the reactants contain different amounts of the substance.

The amount (in moles) of a substance is the mass of that substance divided by the molar mass.

Hence, 1 g of C will contain 1/12 moles of the substance while 1 g of O2 will contain 1/32 moles of the substance.

Answer:

answer c aka it is cheaper than other elements

Answer:

because it's cheap and not hard to purify

Answer:

37.5 miles per hour....

Answer:

did you have options, cause if you did chose something alond the lines of

Explanation:

A real gas is a gas that does not behave as an ideal gas due to interactions between gas molecules. A real gas is also known as a nonideal gas because the behavior of a real gas in only approximated by the ideal gas law.

Answer:

The main difference between the heat of formation and heat of reaction is that heat of formation is the amount of energy either absorbed or released during the formation of a compound whereas heat of reaction is the amount of energy either absorbed or released during any chemical reaction.

Answer:

2 second

Explanation:

yes

Answer:

No.

Explanation:

No, one mole of peas do not fit inside a house because one mole is equals to 6.022 × 10²³ units which is a very large value. mole only use for atoms, ions and molecules etc due to very small size but mole is not used for big sized materials such as peas and other vegetables etc. So that's why we can conclude that one mole of peas did not fit inside a house.

Answer:

Explanation:

Those are the answers in order, BUT the Goldstein and Rutherford ones are confusing me because Rutherford discovered protons and the nuclear atom. Through my research I also noticed that Goldstein contributed to the discovery of the protons made Rutherford, so I listed him as the one who discovered the proton.

I hope this helps! Have a wonderful night! :D

Answer:

129.8 grams

Explanation:

Im a bit confused of what your are asking but if your are asking the mass in grams of K (Potassium) it is very easy dont worry

You multiply mols x Molecular weight.

So

3.32x 39.1= 129.8 grams

I am not sure why your teacher isn't asking for the layers, but here is the list of layers;

A -(topsoil) Mostly minerals from parent material with organic matter incorporated. A good material for plants and other organisms to live.

E - (eluviated) - Leached of clay, minerals, and organic matter, leaving a concentration of sand and silt particles of quartz or other resistant materials – missing in some soils but often found in older soils and forest soils.

B - (subsoil) Rich in minerals that leached (moved down) from the A or E horizons and accumulated here.

C - (parent material) The deposit at Earth’s surface from which the soil developed.

R - (bedrock) A mass of rock such as granite, basalt, quartzite, limestone or sandstone that forms the parent material for some soils – if the bedrock is close enough to the surface to weather. This is not soil and is located under the C horizon.

Answer:

nitrogen dioxide

Explanation:

this was on my chemistry test

Answer:

She okeyy

Explanation:

Example 740 are the think free ofıce pH of the blood 740 blood sample iş takipte kal ❣️

Answer:

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

[tex]n = \frac{N}{L} \\[/tex]

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

[tex]n = \frac{3.55 \times {10}^{22} }{6.02 \times {10}^{23} } \\ = 0.05897...[/tex]

We have the final answer as

Hope this helps you

Answer:

B: 2 moles

Explanation:

that my answer I got i think its correct

Answer:

Ephemerals

Explanation:

The first plants to move into the new bare ground after a wildfire are wildflowers or “weeds.” These fast-germinating, leafy herbaceous plants are also known as “forbs” or “ephemerals.” They quickly germinate, grow and produce a new crop of seeds.

Answer:

ephemeral

Explanation:

Answer:

the wave is reflected. it starts heading towards the other direction

Explanation:

Answer:

28.01 percent

Explanation:

Iron (III) sulphate, [tex]Fe_2(SO_4)_3[/tex], has 2 atoms of Fe.

One atom of Fe has a molar weight of 56. Hence, 2 atoms of Fe would have a total molar weight of 56 x 2 = 112 g/mol

Molar weight of  [tex]Fe_2(SO_4)_3[/tex] = 399.88 g/mol

Percentage Fe in [tex]Fe_2(SO_4)_3[/tex] = 112/399.88 x 100%

                       = 28.01%

The percentage of iron is iron (III) sulphate is, therefore, 28.01 percent.

The charge of phosphate : 3-

Oxidation is an increase in oxidation number, while reduction is a reduction in oxidation number.

The formula for determining Oxidation Numbers in general:

1. Single element atomic oxidation number = 0.

Group IA (Li, Na, K, Rb, Cs, and Fr): +1

Group IIA (Be, Mg, Ca, Sr and Ba): +2

Group IIIA(Al, B) : +3

H in compound = +1, except metal hydride compounds (Hydrogen which binds to groups IA or IIA) oxidation number H = -1, for example, LiH, MgH₂, etc.

2. Oxidation number O in compound = -2, except OF2 = + 2 and in peroxide (Na₂O₂, BaO₂) = -1 and superoxide, for example KO₂ = -1/2.

3 The oxidation number in an uncharged compound = 0,

Total oxidation number in ion = ion charge, Example NO₃⁻ = -1

Compound AlPO₄ :

The oxidation number in an uncharged compound = 0

Since the charge of Al as group 3A (or group 13) is +3, while the AlPO₄ compound is a polyatomic compound (consisting of polyatomic ions PO₄ and Al), the PO₄ charge:

charge Al + charge PO₄ = 0

+ 3 + charge PO₄ = 0

charge PO₄ = -3

Explanation:

Chlorine is an element in group 7 on the periodic table.

  It is the second element in this group of halogens

 The element has a total of 17 electrons:

Ground state configuration  = 1s² 2s² 2p⁶ 3s² 3p⁵

Valence electrons are the outermost shell electrons;

  From the configuration: 3s² 3p⁵ is the valence shell

           Number of electrons  = 2 + 5  = 7

Answer:

synthesis reactions

Explanation:

Just as synthesis reactions can only form one product, decomposition reactions can only start with one reactant

Answer:

stem cells

Explanation:

hope it helps

Answer: During a chemical reaction, matter cannot be created nor destroyed, matter can change form through physical and chemical changes, but through any of these changes, matter is conserved; even though the matter may change from one form to another, the same number of atoms exists before and after the change takes place.

Explanation: <3

Answer:

Hydrogen or hydroxonium ions in the solution

Hydroxyl ions in the solution

Explanation:

A pH of 1 shows there is a lot of hydroxonium ions in the solution and a pH of 14 shows there is a lot of hydroxyl ions in the solution.

1. 92 g

2. 5.4 g

3. 0.217 moles

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

Moles can also be determined from the amount of substance mass and its molar mass

[tex]\tt n=\dfrac{m}{MW}[/tex]

1. the mass of 4 moles of Na(MW= 23 g/mol)

[tex]\tt mass=mol\times MW\\\\mass=4\times 23\\\\mass=92~g[/tex]

2.  the mass of 0.3 moles of water(MW=18 g/mol)

[tex]\tt mass=mol\times MW\\\\mass=0.3\times 18\\\\mass=5.4~g[/tex]

3. the number of moles found in 10g of ethanol C2H5OH(MW=46 g/mol) :

[tex]\tt mol=\dfrac{10}{46}\\\\mol=0.217[/tex]

Answer T

Explanation: