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noname [10]
3 years ago
10

Help please!!!! I only have a couple mins

Chemistry
2 answers:
svlad2 [7]3 years ago
8 0

Answer:-D

Explanation:

Kaylis [27]3 years ago
3 0

Answer:

D i am prety shure

Explanation:

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Rate my profile picture 1-10
MakcuM [25]

i would say a good 10/10

for that butiful smile

7 0
3 years ago
Read 2 more answers
Which of the following statements is true concerning biodiversity?
olchik [2.2K]
Biodiversity is the diversity of species in an area, which makes an ecosystem
6 0
3 years ago
Why the value of kf is greater than kb?
butalik [34]

Answer:

Kf being the depression of freezing point constant in the equation:

change in temperature = Kf * molality

Kb being the elevation of boiling point constant in the equation:

change in temperature = Kb * molality

the constant is variable for each solvent.

Explanation:

3 0
3 years ago
For each of the following amounts, calculate the mass
nalin [4]

The masses of the following amount of compound are as follows:

a. 2080.12 grams of barium iodide

b.1139.2 grams of sulphur dioxide

c. 96.25 grams of AspirinTM

d. 27.144 grams of magnesium nitrite

The molarity formula is represented as follows;

molarity = mass / molar mass

Recall we are ask to find the masses of the compounds. Therefore,

  • mass = molarity × molar mass

<h3>Mass of BaI₂</h3>

a 5.32 mol barium iodide, BaI₂

molarity = 5.32 mol

molar mass of  BaI₂ = 137 + 127(2) = 137 + 254 = 391 g/mol

mass = 5.32 × 391 = 2080.12 grams.

<h3>Mass of SO₂</h3>

b. ) 17.8 mol sulphur dioxide, SO₂

molarity = 17.8 mol

molar mass of SO₂  = 32 + 32 = 64 g /mol

mass = 17.8 × 64 = 1139.2 grams.

<h3>Mass of CHO₄</h3>

c. 1.25 mol AspirinTM, CHO₄

molarity = 1.25 mol

molar mass of  CHO₄ = 12 + 1 + 64 = 77 g / mol

mass = 1.25 × 77 = 96.25 grams

<h3>Mass of Mg(NO₂)₂</h3>

d. 0.234 mol magnesium nitrite, Mg(NO₂)₂

molarity = 0.234 mol

molar mass = 24 + 14(2) + 32(2) = 24 + 28 + 64 = 116 g/mol

mass = 116 × 0.234 = 27.144 grams.  

learn more on masses here: brainly.com/question/10312739?referrer=searchResults

6 0
2 years ago
Why styrene undergoes and ionic polymerization at a faster rate than p methoxystyrene​
Nikitich [7]

Answer:

In styrene, there is a phenyl group which is electron-withdrawing. So the electronic density in the double bonds increases, hence easy to associate as monomers. While in methoxystyrene, there is a carbonyl group which is not electron deficient. so no easy association with monomers.

Explanation:

{ \sf{styrene \: is \: phenylethene \: }} \\ { \sf{its \: polymer \: is \: polystyrene}}

7 0
3 years ago
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