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3 years ago

The table provided shows the properties of four elements.

Chemistry

1 answer:

Zielflug [23.3K]3 years ago

4 0

By my guess, It would either be A) 1 because by research and what i’ve learned, Metal is a good conductor for Electricity and Heat. It’s also shiny and bendable, so that would be my best guess.
Hope this helped. :)

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Ignore, question was removed

djverab [1.8K]

Rip bro but I need the point

6 0

3 years ago

A double-replacement reaction takes place when aqueous K2SO4 reacts with aqueous Pb(NO3)2. You would expect one of the products

melomori [17]

A double displacement reaction is one in which the positive and negative ion in one reactant switch places with the positive and negative ions of the second reactant forming two new products.

In general if we have two reactants AB and CD, the double displacement reaction can form the following products:

A⁺B⁻ + C⁺D⁻ → C⁺B⁻ + A⁺D⁻

In the given example:

K₂SO₄ + Pb(NO₃)₂ → PbSO₄ + 2KNO₃

Ans: B)

One of the products would be PbSO₄

5 0

3 years ago

Read 2 more answers

Antimony has 2 naturally occurring isotopes. The mass of antimony-121 is 120.904 amu and the mass of antimony-123 is 122.904 amu

Sav [38]

Wow, now this one is a hard one, took me quite a while to figure it out but here it is:
$120.904(x)+122.904(1-x)=121.76 \\ 
120.904x-122.904x+122.904=121.76 \\ 
-2x+122.904=121.76 \\ 
-2x=-1.144 \\ 
x=.572 \\ 
1-.572=.428$
The abundances of the two isotopes is:
Antimony-121 = 57.2%
Antimony-123 = 42.8%

6 0

4 years ago

PLEASE HELP: Calculate the average atomic mass of the following elements given the information below (show work): Hydrogen, whic

k0ka [10]

99.98%=0.9998
0.01%=0.0001
=(1)(0.9998)+2(0.0001)+3(0.0001)
=1.0003

3 0

3 years ago

What is the mass of 2.23 x 1023 atoms of sulfur?

Minchanka [31]

Answer:

11.9 g S

General Formulas and Concepts:

Chem

Reading a Periodic Table
Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.
Dimensional Analysis

Explanation:

Step 1: Define

2.23 × 10²³ atoms S

Step 2: Define conversions

Avogadro's Number

Molar Mass of S - 32.07 g/mol

Step 3: Dimensional Analysis

$2.23 \cdot 10^{23} \ atoms \ S(\frac{1 \ mol \ S}{6.022 \cdot 10^{23} \ atoms \ S} )(\frac{32.07 \ g \ S}{1 \ mol \ S} )$ = 11.8758 g S

Step 4: Check

We are given 3 sig figs. Follow sig fig rules.

11.8758 g S ≈ 11.9 g S

5 0

3 years ago