**Answer:**

x> -5

**Step-by-step explanation:**

subtract 4 from both sides: -2x<10

multiply both sides by -1 (reverse the inequality)

2x>-10

divide both sides by two: x>-5

**Answer:**

yes

**Step-by-step explanation:**

A relation is a function in which for each input there is only one output.

In a relation, y is a function of x.

Now we look at the mapping

For input 6, -1 is the output

for input -1, 2 is the output

for input 4, 3 is the output

for input 0, 3 is the output

For each input , there is an output. Input is not repeating. Input is occurring only once.

So **this relation is a function.**

Best Answer: 2 LiCl = 2 Li + Cl2

mass Li = 56.8 mL x 0.534 g/mL=30.3 g

moles Li = 30.3 g / 6.941 g/mol=4.37

the ratio between Li and LiCl is 2 : 2 ( or 1 : 1)

moles LiCl required = 4.37

mass LiCl = 4.37 mol x 42.394 g/mol=185.3 g

Cu + 2 AgNO3 = Cu/NO3)2 + 2 Ag

the ratio between Cu and AgNO3 is 1 : 2

moles AgNO3 required = 4.2 x 2 = 8.4 : but we have only 6.3 moles of AgNO3 so AgNO3 is the limiting reactant

moles Cu reacted = 6.3 / 2 = 3.15

moles Cu in excess = 4.2 - 3.15 =1.05

N2 + 3 H2 = 2 NH3

moles N2 = 42.5 g / 28.0134 g/mol=1.52

the ratio between N2 and H2 is 1 : 3

moles H2 required = 1.52 x 3 =4.56

actual moles H2 = 10.1 g / 2.016 g/mol= 5.00 so H2 is in excess and N2 is the limiting reactant

moles NH3 = 1.52 x 2 = 3.04

mass NH3 = 3.04 x 17.0337 g/mol=51.8 g

moles H2 in excess = 5.00 - 4.56 =0.44

mass H2 in excess = 0.44 mol x 2.016 g/mol=0.887 g

304,000,000+800,000+400 that's expanded form