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zhannawk [14.2K]
3 years ago
14

I need help

Chemistry
2 answers:
natka813 [3]3 years ago
6 0

Answer:

one: mechanical, second: chemical and, third: chemical.

Explanation:

4vir4ik [10]3 years ago
4 0

Answer:

The first one is mechanical, second is chemical and, the third is chemical.

Explanation:

Well acid is a chemical, and water is a chemical compound. The roots are mechanical since it is not a chemical. Mechanical side of things is like you breaking up a sidewalk.

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Answer to AP chem question
andrew11 [14]

Answer:

See the answer and explanation below, please.

Explanation:

The formulas and names of the compunds are:

Na3 P04 (Sodium Phosphate )-->The phosphate suffix corresponds to the highest number of phosphorus oxidation (+5)

Zn PO4 (Zinc Sulfate)-->The phosphate suffix corresponds to the highest number of phosphorus oxidation (+5)

KN03 ( Potassium Nitrate)-->The nitratete suffix corresponds to the highest number of nytrogen oxidation (+5)

Fe 2 (C03)3 (Iron (III) Carbonate / Dihydrous Trioxide / Ferric Carbonate)-->The carbonate suffix corresponds to the highest number of carbon oxidation (+4)

Pb (Co2)2 (Lead carbonate (IV) / Lead trioxocarbonate (IV)))-->The carbonate suffix corresponds to the highest number of carbon oxidation (+4)

5 0
3 years ago
What mass of kcl in grams must be added to 500 ml of a 0. 15 m kcl solution to produce a 0. 40 m solution.
iren [92.7K]

91.4 grams

91.4 grams of kcl in grams must be added to 500 ml of a 0. 15 m kcl solution to produce a 0. 40 m solution.

C = mol/volume

2.45M=mol/0.5L

2.45M⋅0.5L = mol

mol = 1.225

Convert no. of moles to grams using the atomic mass of K + Cl

1.225mol * \frac{39.1+35.5}{mol}

mol=1.225

=1.225 mol . \frac{74.6g}{mol}

=1.225 . 74.6

=91.4g

therefore, 91.4 grams of kcl in grams must be added to 500 ml of a 0. 15 m kcl solution to produce a 0. 40 m solution.

What is 1 molar solution?

In order to create a 1 molar (M) solution, 1.0 Gram Molecular Weight of the chemical must be dissolved in 1 liter of water.

58.44 g make up a 1M solution of NaCl.

To learn more about molar solution visit:

brainly.com/question/10053901

#SPJ4

3 0
2 years ago
Which is the following statement that describe an organism that produce offspring
Natalka [10]
Im not sure what the answer is unless you put the options up for the multiple choice
8 0
3 years ago
Provide the missing arrows in the boxes to show how br2 is produced from nbs
Illusion [34]

Answer: -

The mechanism for Br production from NBS is shown in the attached file.

N-bromo succinimide is a reagent used to brominate. It is most commonly used in allylic bromination, where a hydrogen on a carbon adjacent to a double bond is replaced.

It is selective in nature, unaffecting the normal double bond as compared to only bromine.

It also has a low concentration of bromine as an added advantage.

5 0
3 years ago
PLEASE HELP!! WILL MARK BRAINLIEST!! TIME IS RUNNING OUT!!!
Juli2301 [7.4K]

<span>We can use the heat equation,
Q = mcΔT </span>

<span>

Where Q is the amount of energy transferred (J), m is the mass of the substance (kg), c is the specific heat (J g</span>⁻¹ °C⁻<span>¹) and ΔT is the temperature difference (°C).</span>

 

According to the given data,

Q = 300 J 

m = 267 g

<span> c = ?
ΔT = 12 °C</span>

 

By applying the formula,

<span>300 J = 267 g x c x 12 °C
       c = 0.0936 J g</span>⁻¹ °C⁻<span>¹

Hence, specific heat of the given substance is </span>0.0936 J g⁻¹ °C⁻¹.

 


6 0
4 years ago
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