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maw [93]
3 years ago
15

What is the identity of the atom shown?

Chemistry
2 answers:
jonny [76]3 years ago
3 0
Niterogen if I’m wrong please correct me
umka21 [38]3 years ago
3 0

Answer:

Option A

Explanation:

The answer to this question is the first option or "fluorine." You can find the amount of protons, neutrons, and electrons by looking at the elements atomic number and mass number. In this case we have the first option fluorine which it's atomic number is nine which is why the element has nine protons, and electrons, and nine neutrons because of it's mass number.

Hope this helps.

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Which is produced when minerals are mixed with water and decaying plants and animals?<br> rack
vazorg [7]

Answer:

Soil is a mix of inorganic minerals, water, air, organic matter from dead and decaying plants and animals, and an incredible array of living organisms, ranging in size from microscopic bacteria and fungi to earthworms, moles, and shrews.

Explanation:

hope this helps.

please give brainliest...

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3 years ago
You decided you want to make spaghetti for supper. You first light the gas stove because you need to cook the meat. When the mea
zloy xaker [14]

Answer:

C

Explanation:

Brainliest

7 0
3 years ago
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The Resource Conservation and Recovery Act controls hazardous waste from its creation to its disposal. Please select the best an
o-na [289]

Answer:

True

Explanation:

Resource Conservation and Recovery Act (RCRA). 1976 of United States Environmental Protection Agency(EPA) empowers EPA to control the production, transportation, storage, treatment and disposal of hazardous waste. The RCRA act was amended in 1984 and 1986 to include Waste minimization along with appropriate disposal (not in the landfill site) and tackling of petroleum hazardous waste respectively along with other waste.

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3 years ago
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Question 14 A student dissolves 1.5g of styrene C8H8 in 225.mL of a solvent with a density of 1.02/gmL . The student notices tha
Yuki888 [10]

We must to know:

Cm = molarity = niu / Vs, when the niu = no. of moles and Vs = Volume of solution

the no. niu = mass / molecular mass of substance

molecular mass of C8H8 = 12x8+8x1 = 104 g/mol

=> niu = 1,5 / 104 = 0,0144 moles C8H8

=> Cm = 0,0144/0,225 = 0,06 mol/L

Cmm = molality = niu (C8H8) / mass of solvent (kg)

=> p = mass / V => mass (solvent) = p x V

=> 225 x 1,02 = 229,5 g solvent = 0,2295 kg solvent

=> Cmm = 0,0144 / 0,229,5 = 0,063

8 0
3 years ago
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A bottle of the antiseptic hydrogen peroxide is labeled 3.0% (v/v). How many mL of hydrogen peroxide are in a 400 mL bottle of t
zepelin [54]
There are several ways of expressing concentration of solution. Few of them are listed below
1) mass percentage
2) volume percentage
3) Molarity
4) Normality
5) Molality

In most of the drugs, concentration is expressed either in terms of mass percentage or volume percentage. For, solid in liquid type systems, mass percentage is convenient way of expressing concentration, while for liquid in liquid type solutions, expressing concentration in terms of volume percentage is preferred. Present system is an example of liquid in liquid type solution 


Here, concentration of H2O2 is given antiseptic = 3.0 % v/v

It implies that, 3ml  H2O2 is present in 100 ml of solution

Thus, 400 ml of solution would contain 4 X 3 = 12 ml H2O2
3 0
3 years ago
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