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12345 [234]
3 years ago
13

Name Two ores of iron

Chemistry
1 answer:
exis [7]3 years ago
4 0

massive hematite or magnetite

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What is the value for ∆Soreaction for the following reaction, given the standard entropy values?
Soloha48 [4]
To get the ∆S of the reaction, we simply have to add the ∆S of the reactants and the ∆S of the products. Then, we get the difference between the ∆S of the products and the ∆S of the products. If the <span>∆S is negative, then the reaction spontaneous. If the otherwise, the reaction is not spontaneous.</span>
8 0
3 years ago
A horse pulls on a cart with a force of 1800 newtons. The cart accelerates at the rate of 4.39 m/s2. According to Newton's law o
AlladinOne [14]

Answer:

Answer = 410.02277904328

Explanation:

1,800 N * 4.39m/s^2 = 410.02277904328 m

hope this helps.

7 0
3 years ago
What is photosynthesis?
tamaranim1 [39]
<span>the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a byproduct.

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7 0
4 years ago
Procedure for the experiment.
Elis [28]

Answer:

A solid residue of limestone and some gypsum.

Explanation:

In step 2, some of the limestone and gypsum in the chalk dissolve in the water. When the mixture is filtered, the dissolved substances remain in the water. When the water is boiled off or evaporated, the solid substances remain behind.

5 0
3 years ago
In the halogenation reaction shown, ethane and chlorine gas yield chloroethane and hydrogen chloride. How do the properties of c
Monica [59]

Answer:

Chloroethane is denser and has a higher boiling point

Explanation:

The density of a gas depends directly on the molar mass of the gas. This means that as the molar mass increases, density increases and vice versa.

Having said that, we can easily see that the molar mass of chloroethane (64.51 g/mol) is greater than the molar mass of ethane (30.07 g/mol). Hence we expect that chloroethane is denser than ethane as established above.

In the absence of other strong intermolecular forces, the higher the molecular mass of a substance the greater its boiling point. Thus the boiling point of chloroethane is higher than that of Ethane since they both have weak Van der Waals forces holding their molecules together in the gaseous state.

8 0
3 years ago
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