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USPshnik [31]
3 years ago
9

What are specatator ions

Chemistry
1 answer:
Margaret [11]3 years ago
5 0

Answer:

A spectator ion is an ion that does not participate in a chemical reaction and is found in a solution before and after a reaction.

Hope this helped :)

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What is the mass of 4.5 moles of nitrogen gas
Citrus2011 [14]

n = m / M

m = n × M

Nitrogen (N2) - a gas is always with an index 2 if we don't have shown how many molecules are there

m (N2) = 4,5 mol × (2×14.007 g/mol)

m (N2) = 4,5 mol × 28.014 g/mol = 126.063g

if you don't solve with the decimals in class just replace 14.007 with 14

also if you haven't learned abour gasses aways having index 2 then:

m (N2) = 4,5 mol × 14.007 g/mol = 63.0315g

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3 years ago
0 ml of a 1.30 m solution is diluted to a total volume of 248 ml. a 124-ml portion of that solution is diluted by adding 189 ml
miskamm [114]
0.2842 M<span> * 114 </span>ml<span> = M2 * (114+137) </span>ml<span> ... 228 </span>mL<span> = 0.228 L 114 </span>mL<span> ... </span>Final concentration<span> (or molarity) = (0.0324 moles) / [(0.114 L + 0.137 L)]</span>
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4 years ago
What is the death dependent variable? <br> Picture
polet [3.4K]

Answer:

Dependent and independent variables are variables in mathematical modeling, statistical modeling and experimental sciences. Dependent variables receive this name because, in an experiment, their values are studied under the supposition or hypothesis that they depend, by some law or rule (e.g., by a mathematical function), on the values of other variables. Independent variables, in turn, are not seen as depending on any other variable in the scope of the experiment in question; thus, even if the existing dependency is invertible (e.g., by finding the inverse function when it exists), the nomenclature is kept if the inverse dependency is not the object of study in the experiment. In this sense, some common independent variables are time, space, density, mass, fluid flow rate[1][2], and previous values of some observed value of interest (e.g. human population size) to predict future values (the dependent variable)[3].

Of the two, it is always the dependent variable whose variation is being studied, by altering inputs, also known as regressors in a statistical context. In an experiment, any variable that the experimenter manipulates[clarification needed] can be called an independent variable. Models and experiments test the effects that the independent variables have on the dependent variables. Sometimes, even if their influence is not of direct interest, independent variables may be included for other reasons, such as to account for their potential confounding effect.

Explanation:

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3 years ago
When filling a burette for a titration, adjust the burette so that______, preferably over a sink. Then,_______to add the titrant
artcher [175]

Answer:

Explanation:

When filling a burette for a titrant, adjust the burette so that the opening is near or below the eye leve preferably over the sink.

Then, use a funnel to add the titrant into the burette.

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Full Electron configuration (SN) show work please
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[Kr] 4d¹⁰ 5s² 5p²

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