3 years ago

What are the types of ions found in an ionic bond? (Check all that apply) * 2 points

Chemistry

1 answer:

saw5 [17]3 years ago

6 0

The right options is a cation and an anion !

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resistor has a resistance of 1.8 W. How much current passes through the resistor if there is a potential difference of 3.0 V acr

valentinak56 [21]

Answer:

4.0 V?

Explanation

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3 years ago

An FAS calibration curve (absorbance, y-axis vs. FAS in g/mL) gave an equation he regression line of: y-3678(x)+0.056. If an unk

mezya [45]

Answer:

FAS concentration = 1.61*10^-4M

Explanation:

Beer Lambert's law relates the absorbance (A) of a substance to its concentration (c) as:

$A = \epsilon lc----(1)$

where ε = molar absorption coefficient

l = path length

A plot of 'A' vs 'c' gives a straight line with slope = εl

In addition absorbance (A) is related to % Transmittance (%T) as:

A = 2-log%T----(2)

For the FAS solution, the corresponding calibration fit is given as:

y = 3678(x) + 0.056

This implies that the slope = εl = 3678

It is given that %T = 25.6%

$A = 2-log(25.6)=0.592$

Based on equation(1):

$c = \frac{A}{\epsilon l}=\frac{0.592}{3678}=1.61*10^{-4}M$

8 0

3 years ago

Please help 50 points A balanced chemical equation has _________ number of atoms for each element on both sides of the equation.

labwork [276]

Answer: must have THE SAME number of atoms for each element

Explanation: Chemical equations must be balanced -- they must have the same number of atoms of each element on both sides of the equation. As a result, the mass of the reactants must be equal to the mass of the products of the reaction.

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3 years ago

Fe(no3)3 + na0h > fe(oh)3 + nano3 is balanced or unbalanced?

VashaNatasha [74]

Answer:

Unbalanced

Explanation:

$\text{Fe}(\text{NO}_3)}_3+ \text{NaOH} \rightarrow \text{Fe(OH)}_3 + \text{NaNO}_3\\\\\text{Balanced reaction:}\\\\\text{Fe}(\text{NO}_3)}_3+ 3\text{NaOH} \rightarrow \text{Fe(OH)}_3 + 3\text{NaNO}_3$

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2 years ago

answer now please Which device can be used to separate nails from sawdust most efficiently? A. strainer B. magnet C. colander D.

e-lub [12.9K]

A magnet because it will remove only metal and not the saw dust

Hope this helps

6 0

3 years ago

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