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3 years ago

13

What is an ore? An object that has been recycled, an article of clothing that’s made from natural fiber, a rock that contains en

ough of a metal to be worthwhile to extract, and a fossil fuel that can be burned to generate electricity.

2 answers:

Juli2301 [7.4K]3 years ago

8 0

Answer:

cccccccc

Explanation:

got it right

STatiana [176]3 years ago

4 0

Answer:

C

Explanation:

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How an ionic compound made up of charged particles can be electrically neutral

finlep [7]

Answer:

Explanation:

Ionic compounds are electrically neutral because the charges of the cations and anions that make up the compound cancel each other out. In the case of salt for example, sodium has a charge of positive one, and chloride has a charge of negative one. Together, they neutralize the compound.

5 0

3 years ago

Given the two reactions PbCl2(aq)⇌Pb2+(aq)+2Cl−(aq), K3 = 1.89×10−10, and AgCl(aq)⇌Ag+(aq)+Cl−(aq), K4 = 1.25×10−4, what is the

Sergio [31]

Answer:

$1.2\times 10^{-2}$

Explanation:

The given reactions are:

PbCl2(aq)⇌Pb2+(aq)+2Cl−(aq) $K_3 = 1.89\times 10^{-10}$

AgCl(aq)⇌Ag+(aq)+Cl−(aq) $K_4 = 1.25\times 10^{-4}$

Required reaction is:

PbCl2(aq)+2Ag+(aq)⇌2AgCl(aq)+Pb2+(aq)

$K_f = \frac{K_3}{K_4^2}\\=\frac{1.89\times 10^{-10}}{1.25\times 10^{-4}}^2\\=1.2\times 10^{-2}$

4 0

3 years ago

Select the answers below that represent the ionic compounds in this list: na2so4 h2so4 ch3-ch3 n2o4 cacl2 ca3(po4)2

yarga [219]

Ionic compounds are those compounds which form an ion or dissociates into ions when placed in a solution. These compounds are made up of a metal and non metal. From the choices, here are the ionic compounds:

na2so4

h2so4

cacl2

<span>ca3(po4)2</span>

3 0

3 years ago

Is Isoheptenes hazardous when wet

Dmitry_Shevchenko [17]

Answer:

yes it is dangerous

Explanation:

Water reactive substances are dangerous when wet because they undergo a chemical reaction with water.

3 0

3 years ago

Read 2 more answers

What volume will 2.35 moles of nitrogen gas, at STP, occupy?

snow_tiger [21]

Answer:

STP of 1atm and 273 k for pressure

4 0

2 years ago