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iren2701 [21]
4 years ago
7

What type of bond is H2Se

Chemistry
1 answer:
Vinvika [58]4 years ago
6 0

Answer:The lone pair of electrons takes up more space than a regular bonding pair since it it is not confined to be between two atoms, so it adds coulombic repulsion to the bonding pairs and compresses the angle. Therefore, the bond angle is less than the standard 109.5∘ . It is actually 97.7∘

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Write a five-sentence paragraph describing the nature and background of basketball.​
madreJ [45]

Answer:

The history of basketball began with its invention in 1891 in Springfield, Massachusetts by Canadian physical education instructor James Naismith as a less injury-prone sport than football. Naismith was a 31-year old graduate student when he created the indoor sport to keep athletes indoors during the winters.

Explanation:

The history of basketball began with its invention in 1891 in Springfield, Massachusetts by Canadian physical education instructor James Naismith as a less injury-prone sport than football. Naismith was a 31-year old graduate student when he created the indoor sport to keep athletes indoors during the winters.

3 0
3 years ago
A 50.51g sample of a compound made from phosphorus and chlorine is decomposed. Analysis of the products showed that 11.39 g of p
Alchen [17]

<u>Ans: P = 22.5% and Cl = 77.5%</u>

<u></u>

<u>Given:</u>

Total Mass of sample containing P and Cl = 50.51 g

Mass of P produced = 11.39 g

<u>To determine:</u>

Mass % of P and Cl

<u>Explanation:</u>

Mass % of a given element in a total mass is generally expressed as:

Mass % of element = [mass of element/total mass]*100

Here,

Total mass = mass of P + mass of Cl

mass of Cl = Total - mass of P = 50.51-11.39 = 39.12 g

% P = [11.39/50.51]*100 = 22.5%

%Cl = [39.12/50.51]*100 = 77.5%

5 0
3 years ago
Read 2 more answers
Calculate the percent by mass of water is Copper (II) Fluoride tetra hydrate. You must show all of your work to earn credit. Ato
lara [203]

Answer:

41.4%

Explanation:

The salt copper II fluoride tetrahydrate is a hydrated salt. A hydrated salt is a salt that has some molecules of water of crystalization attached to its structure. The formula of the salt is CuF2.4H2O

The first step is to calculate the molecular mass of the compound as follows

[64 + 2(19) + 4((2×1) + 16)] = [64 + 38 + 72]= 174gmol-1

Mass of water of crystallization= 4((2×1) + 16) = 72 g

Percentage by mass of water of crystallization= 72 / 174 ×100

Percentage by mass of water if crystalization = 41.4%

5 0
3 years ago
A chef fills a 50 mL container with 43.5 g of cooking oil. What is the density of the oil?
Shalnov [3]

Answer:

.87

Explanation:

Density is a mass divided by volume

6 0
3 years ago
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How do you think you can use conversion factors to solve this problem?
Brut [27]

Answer:

firstly conversion of milligrams to kilograms

8 0
3 years ago
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