Chemistry, 05.01.2020 21:31 braphi5609

List the amounts of baking soda and vinegar that you will use in each combination. remember, the amount of one of the
two substances must be held constant.

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Answer from: Quest

answer: atomic mass was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

explanation:

originally atomic mass was used to arrange elements on the periodic table from left to right in a row. each column then shows similar properties of elements of a group.

in modern periodic table, the atoms are arranged in increasing atomic number. as atomic number represents the number of protons in an atom which is unique for every atom.

Answer from: Quest

answer: - first one is the correct answer. $k_2s(aq)+cocl_2(aq)\rightarrow 2kcl(aq)+cos(s)$ .

explanations: - potassium sulfide is $k_2s$ and cobalt(ii) chloride is $cocl_2$ .

charge on k is +1, charge on s is -2, charge on co is +2 and charge on cl is -1.

in a double replacement reaction the ion exchange takes place. in general the reaction looks like:

$ab+cd\rightarrow ad+cb$

if one of the product is insoluble as per solubility rules then a precipitate of it is formed.

when we mix the aqueous solutions of potassium sulfide and cobalt(ii) chloride then chloride ion goes with potassium ion and sulfide ion goes with cobalt ion and the balanced equation is written as:

$k_2s(aq)+cocl_2(aq)\rightarrow 2kcl(aq)+cos(s)$

k and cl has equal charges, similarly co and s has equal charges and hence no subscripts are used for the product side.

as per the solubility rules, cos is insoluble and so it's precipitate is formed.

looking at the given choices, first choice is correct.

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B. the larger and heavier the box, the more force you must use when pushing

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As in the mixture? b. if the mixture occupies a volume of 10.5 l at 65c, calculate the total number of moles of gas in the mixture.c. calculate the number of grams of each gas in the mixtureask for details follow report by jatavionwpisd2272 5 days agoanswersleonelclara32 · ambitiousknow the answer? add it here! leonelclara32rank: ambitious330/5000/5my challenges

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List the amounts of baking soda and vinegar that you will use in each combination. remember, the amo...

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