## Which one of the following arguments is equal to ‘Right Outer Join’ operation in merge() function?

1. Which one of the following symbols is used for displaying specific rows and columns?

(a) {} (b) *

(c) [] (d) ()

2. Which one of the following functions contains the argument ‘INDEX’?

(a) aggregate() (b) merge()

(c) tapply() (d) sum()

3. Which one of the following arguments is equal to ‘Left Outer Join’ operation in merge()

function?

(a) by.x (b) by.y

(c) all.x (d) all.y

4. Which one of the following arguments is equal to ‘Natural Join’ operation in merge()

function?

(a) by.x (b) all.x

(c) all (d) all.y

5. Which one of the following arguments is equal to ‘Right Outer Join’ operation in merge()

function?

(a) by.x (b) all.x

(c) all (d) all.y

6. Which one of the following arguments is used for statistical operations?

(a) INDEX (b) BY

(c) FUN (d) ALL

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### calculate the pressure of 1 mole of methane as a function of container volume at 0°C (273 K) at suitable volumes from 22.4 L to 0.05 L.

The van der Waals equation is an equation of state that applies to real gases. For 1 mole of a gas, the van der Waals equation is where R is….