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Natasha2012 [34]

3 years ago

12

Bromine has two isotopes whose masses are 78.9183 amu and 80.9163 amu. Their abundances are 50.69% and 49.31%, respectively. Cal

culate the average atomic mass of bromine.

1 answer:

artcher [175]3 years ago

3 0

Answer:

79.9035

Explanation:

That's the RAM of btomine

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Use the PhET simulation to identify what happens to the concentrations of a dilute Drink mix mixture or a pure Drink mix solutio

elena-s [515]

Hello user, you did not add a picture of an attachment to enable me help you solve this problem. Please check the attachment I added i believe it is the question that needs to be solved.

Explanation:

1. In the first column

<u>INCREASE CONCENTRATION</u>: these are the items that needs to be placed in this bin

a. Add drink mix solid to a diluted mixture of drink mix in pure water

b. Add drink mix solution to a diluted mixture of drink mix in pure water

c. Add drink mix solid to pure drink mix solution

d Evaporate water from a diluted mixture of drink mix in pure water

e Evaporate water from pure drink mix solution

2. The items below are what should be placed in this bin,<u>DECREASE CONCENTRATION:</u>

a. Add water to a diluted mixture of drink mix in pure water

b. Add water to pure drink mix solution

3. These items here should be placed here. <u>DOES NOT AFFECT CONCENTRATION:</u>

a. Add pure drink mix solution to pure drink mix solution

b. Drain the pure drink mix solution

c. Drain the diluted mixture

7 0

4 years ago

Select the keyword or phrase that will best complete each sentence: alkenes, -ene, syn and anti, alkanes, syn, nucleophiles, -yn

kompoz [17]

Answer:

Alkenes; nucleophiles; electrophiles; -ene; syn; anti; anti; syn; syn and anti.

Explanation:

The hydrocarbons are organic molecules that have only carbon and hydrogen. If there are only simple bonds between carbons, the hydrocarbon is called alkane; if there is a carbon-carbon double bond it is called alkene; and if there is a carbon-carbon triple bond, it is called alkyne.

Alkanes have pi bonds, so they have delocalized electrons, so they are electron-rich, or nucleophiles and a lewis base, so they don't react with nucleophiles and bases but will react with electrophiles (substances with a positive charge).

To name an alkane, we must use the prefix "-ene", for example, H₂C = CH₂ is the ethene.

The alkanes can suffer addition reactions, which can be syn, anti, or both. The addition reaction occurs when the double bond is broken, and the new elements are added to the compound.

If the two parts of the reagent are added to the same side of the double bond, it's called a syn addition, which occurs with Hydroboration (HBr); when the addition occurs in the opposite side of the double bond, it is called anti addition, which happens in halogenation (the reagent is a halogen) and halohydrin (which have a halogen and a hydroxyl bonded to adjacents carbons). If the reaction can occur on both sides, its a syn and anti addition, and occurs in hydrogalogenation (HX, where X is a halogen).

5 0

3 years ago

What ionic are compounds used in our daily life?

Gemiola [76]

Answer:

Explanation:

NaCl sodium Chloride as ordinary salt

Naf sodium fluoride is used in toothpaste which we use every day

4 0

3 years ago

Please respond guys I’ll give brainliest and 100 points

Contact [7]

Answer:

Name

Atomic Number

Atomic Symbol

Atomic Weight

Phase

Color

Classification

Group in Periodic Table

Group Name

Period in Periodic Table

Block in Periodic Table

Electronic Configuration

Melting Point

Boiling Point

Electronic Shell Structure

CAS Number

Neighborhood Elements

Lithium

3

Li

6.941

Solid

Silver

alkali metal

1

lithium family

2

s

[He] 2s1

180.54 °C

1342 °C

2, 1

CAS7439-93-2

Neighborhood Elements of Lithium

Cesium

55

Cs

132.90545

Solid

Silver

alkali metal

1

lithium family

6

s

[Xe] 6s1

28.44 °C

671 °C

2, 8, 18, 18, 8, 1

CAS7440-46-2

Neighborhood Elements of Cesium

Explanation:

4 0

3 years ago

Ksju [112]

109/8.56=12.7
50+12.7
V=62.7

Mass= Volume x Density so i divided the mass and density to get the volume. and afterwards i would just add it to the mass to get my final answer

4 0

3 years ago

Read 2 more answers