What are some examples of nonmetals?

10 points! Please help if you know the answer I need to get 100% on this test :)

miskamm [114]

Answer:

Metal has an high capacity, which allows it to heat up faster and transfer the heat to the contents of the pot or pan.

Explanation:

Because metal pots are made from a narrow range of metals because pots and pans need to conduct heat well.

7 0

3 years ago

g When aqueous solutions of and are mixed, a solid forms. Determine the mass of solid formed when 140.7 mL of 0.1000 M is mixed

solong [7]

The question is incomplete, the complete question is:

When aqueous solutions of NaCl and $Pb(NO_3)_2$ are mixed, a solid forms. Determine the mass of solid formed when 140.7 mL of 0.1000 M NaCl is mixed with an excess of an aqueous solution of

Answer: The mass of lead chloride produced is 1.96 g

Explanation:

Molarity is defined as the amount of solute expressed in the number of moles present per liter of solution. The units of molarity are mol/L. The formula used to calculate molarity:

$\text{Molarity of solution}=\frac{\text{Moles of solute}\times 1000}{ \text{Volume of solution (mL)}}$ .....(1)

Given values:

Molarity of NaCl = 0.1000 M

Volume of the solution = 140.7 mL

Putting values in equation 1, we get:

$0.1000=\frac{\text{Moles of NaCl}\times 1000}{140.7}\\\\\text{Moles of NaCl}=\frac{0.1000\times 140.7}{1000}=0.01407mol$

The chemical equation for the reaction of NaCl and lead nitrate follows:

$Pb(NO_3)_2(aq)+2NaCl(aq)\rightarrow PbCl_2(s)+2NaNO_3(aq)$

By the stoichiometry of the reaction:

If 2 moles of NaCl produces 1 mole of lead chloride

So, 0.01407 moles of NaCl will produce = $\frac{1}{2}\times 0.01407=0.007035mol$ of lead chloride

The number of moles is defined as the ratio of the mass of a substance to its molar mass.

The equation used is:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$ ......(2)

Molar mass of lead chloride = 278.1 g/mol

Plugging values in equation 2:

$\text{Mass of lead chloride}=(0.007035mol\times 278.1g/mol)=1.96g$

Hence, the mass of lead chloride produced is 1.96 g

8 0

3 years ago

What is the empirical formula for glucose A) B) C) D)

pshichka [43]

The Answer is A CH2O

The molecular formula for glucose is C6H12O6. The subscripts represent a multiple of an empirical formula. To determine the empirical formula, divide the subscripts by the GCF of 6 which gives CH2O.

4 0

3 years ago

Read 2 more answers

name a household substance that could lower the pH of water leaving your home? increase the pH of water leaging your home? and w

Lady_Fox [76]

Bleach would increase the pH because Bleach is a basic substance with a pH of about 12

Soda would lower the pH because the pH of sodas is somewhere around 2.5 (this is for coke, other sodas are a bit different)

8 0

3 years ago

Will strontium bromide and potassium sulfate give a precipitate

antiseptic1488 [7]

Answer:- Yes, strontum bromide and potassium sulfate gives a precipitate of strontium sulfate.

Explanations:- As per the solubility rules, all compounds of alkali metals are soluble.

Sulfate of most of the alkaline earth metals like Ca, Ba and Sr are insoluble.

A double displacement reaction takes place when strontium bromide and potassium sulfate are mixed and a precipitate of strontium sulfate is formed:

$Sr(Br)_2(aq)+K_2SO_4(aq)\rightarrow 2KBr(aq)+SrSO_4(s)$

Note: (aq) stands for aqueous and (s) stands for solid and here it's precipitate.

8 0

3 years ago