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3 years ago

Give the name and formula of the compound formed from each pair of elements: (a) 37q and 35r (b) 8q and 13r (c) 20q and 53r

2 answers:

amm18123 years ago

8 0

(a) 37Q = 37Rb(Rubidium)
35R = 35Br(Bromine)
Formula of the compound is : RbBr(Rubidium Bromide)

(b) 8Q = 8O(Oxygen)
13R = 13Al(Aluminum)
Formula of the compound is : Al2O3(Aluminum Oxide)

(c)20Q = 20Ca(Calcium)
53R = 53I(Iodine)
Formula of the compound is : CaI2(Calcium Iodide)

HACTEHA [7]3 years ago

6 0

Answer:

(a) $RbBr$ - rubidium bromide.

(b) $Al_2O_3$ - aluminium oxide.

Explanation:

Hello,

(a) In this case, the elements having 37 and 35 as the oxidation states are rubidium and bromine respectively, in such a way the formed compound, due their gatherable oxidation states (+1 and -1 respectively) is the following binary salt:

$RbBr$ - rubidium bromide.

(b) In this case, the elements having 8 and 13 as the oxidation states are aluminium and oxygen respectively, in such a way the formed compound, due their gatherable oxidation states (+3 and -2 respectively) is the following basic oxide:

$Al_2O_3$ - aluminium oxide.

(c) In this case, the elements having 20 and 53 as the oxidation states are calcium and iodine respectively, in such a way the formed compound, due their gatherable oxidation states (+2 and -1 respectively) is the following binary salt:

$CaI_2$ - Calcium iodide.

Best regards.

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1. How does protein substance in animal hide or skin be preserved from bacterial infection during tanning?

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1. By being cured

2. To remove the silica impurities from haemetite

3. The cathode will be bronze while the anode will be the silver

4. i) Wastes from industrial processes

ii) Waste waters and sewage

iii) Dumping of wastes into water bodies

5) Three methods to reduce air pollution includes

i) Promote the use of recycled of materials

ii) Promote and use renewable sources of energy

iii) Limit activities that involve the burning of fuels such as encouraging the use of mass transit buses, preventing the occurrence of fires in forests

Explanation:

1. In order to preserve the proteins in the hides of animal skin from putrefaction they are cured with salt to remove by, osmotic pressure difference, the water content present in the animal hide

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VLD [36.1K]

Answer:

See explanation

Explanation:

The third law of thermodynamics states that "the entropy of a perfect crystal of a pure substance approaches zero as the temperature approaches zero" (Wikipedia).

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