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e-lub [12.9K]
3 years ago
8

HELP PLS!!!!!!! NEED THIS IN 5 MINS

Chemistry
1 answer:
denis23 [38]3 years ago
6 0

Answer:

Sharing or covalent bonding is taking place.

Explanation:

The valence electron will be shared by both the atoms so that means that the election will move around both of the atoms.

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Why doesn’t a convection current form when a liquid is heated at the top?
DaniilM [7]

If the heating is done on one small area on the top, there will be convection. If the heating is restricted to a small fraction of the heating area, then within that area the heating will go deeper than anywhere else on the surface. Then unheated area will have a shallower region of high temperature. Then some convection will occur in the deeper layers, causing some motion on top.

This happens quite a bit during welding. Convection is very significant in welding, even when the heating is from the top.

5 0
3 years ago
List two types of information that are given in each box of this periodic table
uysha [10]
Atomic number, atomic mass, symbol of element
6 0
3 years ago
A 50.0 mL of 0.88 M H2O2 and 10.0 mL of 0.50 M Fe(NO3)3 were combined and a temperature change of 7.47 was observed. The specifi
Shtirlitz [24]

Answer:

The heat of reaction -1.9 kilo Joules.

Explanation:

Volume of the hydrogen peroxide solution = 50.0 mL

Volume of the ferric nitrate solution = 10.0 mL

Total volume of the solution = 50.0 mL + 10.0 mL = 60.0 mL

Mass of the final solution = m

Density of water = density of the final solution = d = 1 g/mL

Mass=density\times Volume

m=1 g/ml\times 60.0 ml=60.0 g

Heat capacity of the mixture = c = 4.18 J/g°C

Change in temperature of the mixture = ΔT = 7.47°C

Heat absorbed by the mixture = Q

Q=mc\Delta T

Q=60.0 g\times 4.18 J/g ^oC\times 7.47 ^oC=1873.48 J=1.873 kJ\approx 1.9 kJ

Heat release due to reaction = -Q'

-Q' =Q (law of conservation of enrage)

Q'= -Q = -1.9 kJ

The heat of reaction -1.9 kilo Joules.

7 0
4 years ago
Steroids, which all share the same carbon-ring framework but differ in functional groups that are attached to the basic ring str
lawyer [7]

Answer:

Lipids.

Explanation:

Steroids are known as the type of lipid which consists of 4 rings of carbon atoms. All steroids have 1 five-sided carbon ring and a 3 six-sided carbon ring. They are works as a hormone in the body and secreted by the ovaries and testes.

Steroids differ in functional groups. When this functional group attached to the steroid ring it gives steroids with a different function. They are composed of largely carbon, and hydrogen atoms. They are insoluble in nature in water.

8 0
3 years ago
When 1 mole of H2CO(g) reacts with O2(g) to form CO2(g) and H2O(l) according to the following equation, 563 kJ of energy are evo
amid [387]

Answer:

This is an exothermic reaction

q = 563 kJ

Explanation:

Step 1: The balanced thermochemical equation

H2CO(g) + O2(g) → CO2(g) + H2O(l)        ΔH = -563 kJ

This is a combustion, this means there will be released heat. This means it's an exothermic reaction.

The energy involved, will be released (that's why ΔH is negative)

q has the same value as ΔH (but positive)

q = 563 kJ

8 0
4 years ago
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