Chemistry High School

The maximum and minimum oxidation state that can be shown by iodine respectively is
A. +3, -1
B. +7, -1
C. +5, 0
D. +1, 0

Answers

Answer 1

Answer:

B -1 and +7

Explanation:

Iodine shows oxidation states of −1, +1, +3, +5, or +7.

Related Questions

explain how sand is form

Answers

Answer:

Sand comes from many locations, sources, and environments. Sand forms when rocks break down from weathering and eroding over thousands and even millions of years. Rocks take time to decompose, especially quartz (silica) and feldspar .

Explanation:

If a substance melts at 20oC, what is its freezing point?

Answers

Answer:

It is difficult, if not impossible, to heat a solid above its melting point because the heat that ... in a solid are packed in a regular structure that is characteristic of that particular substance.

#carryONlearning

2. Which BEST compares bacteria and viruses?
bacteria are smaller than viruses
O bacteria are living organisms, but viruses are not
O bacteria cause disease, but viruses do not
O bacteria have genetic material, but viruses do not

Answers

Answer:

the sewcond one bacteria are living organisms, but viruses are not

Explanation:

Answer:

Bacteria are living organisms, but viruses are not

Explanation:

HELP HELP HELP HELP HELP HELP HELP HELP HELP

Answers

Answer:

Explanation:

I got this i am very smart

Answer:

The answer is 3) same mass more volume

Explanation:

Mass measures the amount of matter in a substance or an object.

Volume measures the amount of space that a substance or an object takes up.

True or false? Covalent molecules are formed when non-metal atoms share electrons with other non-metal atoms.

Answers

Answer:

true

covalent bonds are between non metals and nonmetals. and they are sharing electrons.

What is involved in creating genetically modified bacteria?
A. allowing them to reproduce freely
B. changing their food source
c. using biotechnology techniques
D. growing them on selected plants

Answers

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Magnesium bromide is prepared in a laboratory using the reaction below. Typically, the magnesium bromide is recoveted as a solid by heating way the remaining water
Mg(s) + 2 HB-(aq) - MgBrac) + H200)
If 0.940 mole of HBr in solution is added to 16.5 grams of Mgo in a beaker and then is heated until dry, what are the expected contents of the beaker?

Answers

Can you give more examples?

A chemist weighed out 2.9 g of nickel. Calculate the number of moles of nickel she weighed out. Be sure your answer has the correct number of significant digits.

Answers

Answer:moles = 2.9 g Ni × 1 mol Ni 58.69 g Ni = 0.0663 mol Ni

Be able to describe the relationship between Freedom of Movement and phase change.

Answers

Ion knoe Wdym by “be able to describ’ so ima put it in my own words idr lol:)

if you talm bout some kentic energy or sum ok but other Dan dat ion knoe tbh

I can explain how transferring kinetic energy in and out of a substance can cause a change

If you have 90L of water, what is the volume?

Answers

Answer:

900

Explanation:

Alleles are different forms of ribosomes.
1 point
A. True
B. False

Answers

Answer:

true

Explanation:

i did the test

Answer: False

Explanation:

What is the molecular formula of paradichlorobenzene that has a molar mass of 147.g/mol and an empirical formula of C3CIH2?

Answers

Answer:

the molecular formula of paradichlorobenzene is C6H4CL2

Help pls thnk you!!!!

Answers

The amine here is the easiest to spot since there’s only one structure that has a nitrogen atom, which would be the first (the first structure is a primary amine).

The distinguishing functional group of an alcohol is the hydroxy group (—OH). Both the second and third structures have an —OH group, but the —OH in the third structure is part of a carboxyl group (—COOH or —C(=O)OH). A carboxyl group takes priority over hydroxy group. Thus, the second structure would be an alcohol and the third structure would be a carboxylic acid.

That leaves us with the fourth structure, a hydrocarbon with a halogen substitutent, or, aptly named, a halocarbon.

Use the periodic table to determine the molar mass of each of the following elements. Use the correct number of significant figures.

Potassium (K):
g/mol
Osmium (Os):
g/mol
Manganese (Mn):
g/mol

Answers

Answer:

Potassium (K): 39.10 g/mol

Osmium (Os): 190.23 g/mol

Manganese (Mn): 54.94 g/mol

Explanation:

Just got it right on Edge 2021

The molar mass of the following elements are

Potassium (K): 39.10 g/mol

Osmium (Os): 190.23 g/mol

Manganese (Mn): 54.94 g/mol

What is molar mass?

The molar mass of a substance is grams of one mole of that substance.

It can be calculated by dividing the atomic weight of the element, and the number of atoms found in that element.

Manganese is a transition metal with the atomic number 25.

Potassium is an essential mineral that is an alkali metal and its atomic number is 19.

Osmium is also a transition metal whose atomic number is 76.

Thus, the molar mass of the elements are, Potassium (K): 39.10 g/mol

Osmium (Os): 190.23 g/mol

Manganese (Mn): 54.94 g/mol

Learn more about molar mass

https://brainly.com/question/12127540

how many grams of ZrCl4 can be produced if 123 g of ZrSiO4 react with 85.0 g of Cl2?

Answers

Answer:

153.3 grams of ZrCl₄ are produced

Explanation:

The equation of the reaction is as follows:

ZrSiO₄ + Cl₂ ----> ZrCl₄ + SiO₂ + O₂

molar mass of ZrSiO₄ = (91 + 32 + 16 * 4) = 187.0 g/mol

molar mass of ZrCl₄ = (91 + 35.5 * 4) = 233.0 g/mol

molar mass of Cl₂ = (35.5 * 2) 71.0 g/mol

From the equation of reaction, 1 mole of ZrSiO₄ reacts with one mole of Cl₂ to produce one mole of ZrCl₄

number of moles of ZrSiO₄ present in 123 g = 123/187 = 0.65 moles

number of moles of Cl₂ present in 85.0 g = 85.0/71.0 = 1.19 moles

therefore, ZrSiO₄ is the limiting reactant

123.0 g of ZrSiO₄ will react with excess Cl₂ to produce 123 * 233/187 grams of ZrCl₄ = 153.3 grams of ZrCl₄

Therefore, 153.3 grams of ZrCl₄ are produced

Plz help I need the answer now!! Which statement is best supported by the evidence on the map?
A. Oil is produced mostly in the southern part of Africa.
B. Gold is found in every country in Africa.
O
C. Iron ore is found mostly in northern Africa.
D. Each country in Africa has about the same amount of each natural
resource.

Answers

Answer:

I'd say C. You can eliminate the rest of the answers and get C. Most of the iron is found up North on the map.

Explanation:

Plant cells and animal cells were observed under a microscope. The characteristics of two cells are listed below.

Cell X: Has chloroplast
Cell Y: Does not have a cell wall

Which statement about the two cells is correct? (5 points)

a
Cell X has a cell membrane.

b
Cell X has a small vacuole.

c
Cell Y has a large vacuole.

d
Cell Y has chloroplast.

Answers

Answer:

The answer is B

Explanation:

ITs B

Answer:

Cell X has a cell membrane

Explanation:

I took the test and got it right.

What is the percent composition of C4H10? (4 points)
44.6% C and 45.4% H
57.3% C and 42.7% H
82.7% C and 17.3% H
89.4% C and 10.6% H

Answers

Answer:82.7% C and 17.3% H

Explanation:

C4 = 12.0107g/mol x 4 = 48.0428 g/mol

H10 = 1.00794 g/mol x 10 = 10.0794 g/mol

Molar Mass of Butane, C4H10 = 48.0428 g/mol + 10.0794 g/mol= 58.1222 g/mol

percent composition of Carbon is = ( mass of carbon contained in butane / molar mass of Butane) x 100

=(48.0428 /58.1222) x 100% = 0.8265 x 100

=82.65% =82.7% of Carbon.

Percent composition of Hydrogen = (mass of Hydrogen contained in Butane / molar mass of Butane )x 100

( 10.0794/58.122 ) x 100% =0.1734 x 100

= 17.3% OF Hydrogen.

Answer:

C- 82.7% C and 17.3% H

Explanation:

I took the Quiz

2
A brick has a mass of 4.0 kg and the Earth has a mass of 6.0 x 10
Use this information to answer the questions below. Be sure your answers have the correct number of significant digits.
What is the mass of 1 mole of bricks?

?
How many moles of bricks have a mass equal to the mass
of the Earth?

Answers

Answer:mass of 1mole of brick = mass of 1 brick x avagadro number

= 4 kg x 6.022 x 10^23 bricks = 2.4 x 10^24 kg

No. of moles of bricks have a mass equal to the mass of the earth

= mass of earth / mass of 1 mole of brick

= [ 6 x 10^27 ] / [ 2.4 x 10^24 ]

= 2.5 x 10^3

= 2500 moles

Explanation:

what does kyle learn at the end

Answers

Answer:

Umm who's Kyle?

Explanation:

Answer:

his skills aren’t as valuable to the team as he thought

Explanation:

What is the amount of diamine silver that can be formed when 10.00 g AgCl is mixed with 1.00 L of 0.100 M NH3?

Answers

The amount of diamine silver chloride = 8.87 g

Further explanation

Given

10 g AgCl

1.00 L of 0.100 M NH3

Required

the amount of diamine silver

Reaction

AgCl + 2 NH₃ → [Ag(NH₃)₂]Cl

mol AgCl :

= mass : MW

= 10 g : 143,32 g/mol

= 0.0698

mol NH₃ :

= M x V

= 0.1 x 1

= 0.1

NH₃ as a limiting reactant

mol [Ag(NH₃)₂]Cl based on NH₃ :

= 1/2 x mol NH₃

= 1/2 x 0.1

= 0.05

Mass diamine silver :

= 0.05 x 177.3822 g/mol

= 8.87 g

Balance the following
Mn(NO2)2
+
BeCl2 →
Be(NO2)2 +
MnCl2

Answers

Answer:

Double Displacement (Metathesis)

Beryllium Chloride - BeCl2

Manganese(II) Chloride - MnCl2

Explanation:

Enter an equation of a chemical reaction and click 'Balance'. The answer will appear below

Always use the upper case for the first character in the element name and the lower case for the second character. Examples: Fe, Au, Co, Br, C, O, N, F. Compare: Co - cobalt and CO - carbon monoxide

To enter an electron into a chemical equation use {-} or e

To enter an ion specify charge after the compound in curly brackets: {+3} or {3+} or {3}.

Example: Fe{3+} + I{-} = Fe{2+} + I2

Substitute immutable groups in chemical compounds to avoid ambiguity.

For instance equation C6H5C2H5 + O2 = C6H5OH + CO2 + H2O will not be balanced,

but PhC2H5 + O2 = PhOH + CO2 + H2O will

Compound states [like (s) (aq) or (g)] are not required.

If you do not know what products are enter reagents only and click 'Balance'. In many cases a complete equation will be suggested.

Reaction stoichiometry could be computed for a balanced equation. Enter either the number of moles or weight for one of the compounds to compute the rest.

Limiting reagent can be computed for a balanced equation by entering the number of moles or weight for all reagents.

The balanced equation for the given reaction is:

[tex]\rm Mn(NO_2)_2 + 2BeCl_2 \rightarrow 2Be(NO_2)_2 + MnCl_2[/tex]

In chemistry, a balanced equation is a representation of a chemical reaction that follows the law of mass conservation. It assures that on both sides of the equation, the total number of atoms of each element remains constant.