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3 years ago

An atom with 17 neutrons has a mass number of 33. What is this element?

1 answer:

6 0

All atoms which contain 17 protons are called chlorine atoms. Adding or removing a proton from an atom's nucleus changes that atom's atomic number and creates a different element. Chlorine-35 and chlorine-37 are both isotopes of the element chlorine. The number after the name 'chlorine' is called the mass number

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Muscles work in _____ so when other muscles contract the other ___

abruzzese [7]

The first word could be: pairs and the second: relax

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3 years ago

A potassium bromide solution is 8.30% potassium bromide by mass and its density is 1.03 g/ml. what mass of potassium bromide is

pshichka [43]

Answer: The mass of potassium bromide present in 41.2 mL of solution will be 3.522 grams.

Explanation:

We are given that KBr is present in 8.3% KBr solution, which means that 8.3 grams of potassium bromide is present in 100 gram of the solution.

To calculate the volume of KBr, we use the formula:

$Density=\frac{Mass}{Volume}$

Mass of the solution = 100 grams

Density of KBr solution = 1.03g/mL

Volume of the solution = ? mL

Putting values in above equation, we get:

$1.03g/mL=\frac{100g}{Volume}\\\\Volume=97.08mL$

Now, to calculate the mass of KBr in 41.2mL of the solution, we use unitary method.

In 97.08 mL of solution, mass of KBr present is 8.3 grams.

So, 41.2 mL of solution will contain = $\frac{8.3g}{97.08mL}\times 41.2mL=3.522g$ of KBr.

Hence, the mass of potassium bromide present in 41.2 mL of solution will be 3.522 grams.

7 0

3 years ago

A certain skin lotion is a fine mixture of water and various oils. This lotion is cloudy and cannot be separated into oil and wa

nataly862011 [7]

Colloid

Explanation:

A lotion of this type is a typical colloid mixture.

A colloid is a homogeneous mixtures of two phases.
The dispersed phase and the dispersion medium.
Water is the dispersion medium and oil is the dispersed phase.

They have the following properties:

Liquid dispersed phase and liquid dispersion medium forms an emulsion and a lotion of this type is an example.
The particles are larger than those found in solutions.
The particles pass through ordinary filter paper.
They may be cloudy or clear .

learn more:

Heterogeneous mixtures brainly.com/question/1446244

#learnwithBrainly

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3 years ago

How is stoicheometry used to keep camels alive

Novay_Z [31]

Answer:

by heart beat camel lives

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3 years ago

Please help!!!!! Please help!!!!!

lesantik [10]

Answer:

1.B

2.A

3. B

Explanation:

1. A chemical bond is the physical phenomenon of chemical substances being held together by attraction of atoms to each other through sharing

2. so 2 is electrons of one atom are transferred permanently to another atom.meaning the answer is A

3. is When atoms combine by forming covalent bonds, the resulting collection of atoms is called a molecule. We can therefore say that a molecule is the simplest unit of a covalent compound.

3 0

3 years ago

Read 2 more answers