All categories

3 years ago

5. Which of the following can be classified as a mixture ?

Chemistry

1 answer:

podryga [215]3 years ago

5 0

5. B air is a mixture of many elements, but is not a chemically fused.

6. B Beef stew, composition varies throughout.

7. A. They can be chemically separated into their component elements, but they are all homogenous, and as such, have constant composition, which differs from the components properties, as the components must undergo a chemical change to become compounds.

You might be interested in

Molar mass of calcium sulfate

Nonamiya [84]

Answer:

The molar mass of calcium sulfate is 136.14 g/mole. Calcium has a molar mass of 40.08 g/mole. Sulfur has a molar mass of 32.06 g/mole.

7 0

3 years ago

What is the vowel.????????????

Serhud [2]

Answer:

a e i o u

Explanation:

a e i o u

3 0

3 years ago

Which of the following elements is least likely to form a cation that will then form an ionic bond with an ion of a Group 7A ele

ch4aika [34]

Iodine is a group 7A element. The halogens form anions because of their high electronegativities, so Iodine is unlikely to form a cation.

8 0

3 years ago

Will strontium bromide and potassium sulfate give a precipitate

antiseptic1488 [7]

Answer:- Yes, strontum bromide and potassium sulfate gives a precipitate of strontium sulfate.

Explanations:- As per the solubility rules, all compounds of alkali metals are soluble.

Sulfate of most of the alkaline earth metals like Ca, Ba and Sr are insoluble.

A double displacement reaction takes place when strontium bromide and potassium sulfate are mixed and a precipitate of strontium sulfate is formed:

$Sr(Br)_2(aq)+K_2SO_4(aq)\rightarrow 2KBr(aq)+SrSO_4(s)$

Note: (aq) stands for aqueous and (s) stands for solid and here it's precipitate.

8 0

3 years ago

Balance these equations! 1) AIBr; + K- KBr + AI

Tema [17]

Answer:

Instructions on balancing chemical equations:

Enter an equation of a chemical reaction and click 'Balance'. The answer will appear below

Always use the upper case for the first character in the element name and the lower case for the second character. Examples: Fe, Au, Co, Br, C, O, N, F. Compare: Co - cobalt and CO - carbon monoxide

To enter an electron into a chemical equation use {-} or e

To enter an ion specify charge after the compound in curly brackets: {+3} or {3+} or {3}.

Example: Fe{3+} + I{-} = Fe{2+} + I2

Substitute immutable groups in chemical compounds to avoid ambiguity.

For instance equation C6H5C2H5 + O2 = C6H5OH + CO2 + H2O will not be balanced,

but PhC2H5 + O2 = PhOH + CO2 + H2O will

Compound states [like (s) (aq) or (g)] are not required.

If you do not know what products are enter reagents only and click 'Balance'. In many cases a complete equation will be suggested.

Reaction stoichiometry could be computed for a balanced equation. Enter either the number of moles or weight for one of the compounds to compute the rest.

Limiting reagent can be computed for a balanced equation by entering the number of moles or weight for all reage

Explanation:

3 0

3 years ago