Question

Write the equality and two conversion factors, and identify the numbers as exact or give the number of significant figures for each of the following:

(a) The label on a bottle reads $10$mg of furosemide per $1$mL .

(b) The Daily Value (DV) for selenium is $70$mcg.

(c) An IV of normal saline solution has a flow rate of $85$mL per hour.

(d) One capsule of fish oil contains $360$mg of omega-$3$ fatty acids.

Short answer

(a) The label on bottle have two significant figures and 1 exact and $1$mL $=10mg$of furosemide.

(b) The Daily Value for selenium contain two significant figures and one exact and $1tablet=70mcg$of selenium.

(c) An IV of normal saline solution contain two significant figures and one exact and$1hour=85mL$ flow rate.
(d) One capsule of fish oil contain two significant figures and one exact and $1capsule=360mg$of omega-$3$fatty acids.

Step-by-step solution

Part (a) Step 1: Given Information

We are given that the label on a bottle reads $10$mg of furosemide per $1$mL and we have to find out equality and two conversion factors and significant figures.

Part (a) Step 2: Explanation

According to given information $10mg$of furosemide per$1$mL is present

which states that Equality is,

$1$tablet $=10mg$of furosemide.

and now two conversion factors are,

$\frac{10mgoffurosemide}{1tablet}$and $\frac{1tablet}{10mgoffurosemide}$.

The significant figures or exact are,

as $10mg$of calcium has two significant answers and $1$mLis exact.

Part (b) Step 1: Given Information

We are given that the Daily Value (DV) for selenium is $70$mcg and we have to find out equality and two conversion factors and significant figures.

Part (b) Step 2: Explanation

According to given information $70mcg$of selenium is DV.

which states that Equality is,

$1$tablet $=70mcg$of selenium.

and now two conversion factors are,

$\frac{70mcgofselenium}{1tablet}$and $\frac{1tablet}{70mcgofselenium}$.

The significant figures or exact are,

as $70mcg$selenium has two significant answers and $1$tablet is exact.

Part (c) Step 1: Given Information

We are given that an IV of normal saline solution has a flow rate of $85$mL per hour and we have to find out equality and two conversion factors and significant figures.

Part (c) Step 2: Explanation

According to given information $85mL$per hour is the flow rate.

which states that Equality is,

$1hour$$=85mL$

and now two conversion factors are,

$\frac{85mL}{1hour}$and $\frac{1hour}{85mL}$.

The significant figures or exact are,

as $85mL$flow rate has two significant answers and $1$hour is exact.

Part (d) Step 1: Given Information

We are given that one capsule of fish oil contains $360$mg of omega-$3$ fatty acids and we have to find out equality and two conversion factors and significant figures.

Part (d) Step 2: Explanation

According to given information $360mg$of omega-$3$ fatty acids per capsule.

which states that Equality is,

$1$capsule $=360mg$of omega-$3$ fatty acids

and now two conversion factors are,

$\frac{360mgofomega-3fattyacids}{1capsule}$and $\frac{1capsule}{360mgofomega-3fattyacids}$.

The significant figures or exact are,

as $360mg$ of omega-$3$ fatty acids has three significant answers and $1$capsule is exact.