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3 years ago

How does the periodic table help in predicting the formula of a stable ionic compound?

Chemistry

2 answers:

sukhopar [10]3 years ago

7 0

Answer:

Explanation:

marshall27 [118]3 years ago

3 0

A. This is a FALSE statement because Metals in Group 1 form cations with a +1 charge and not -1.

B. This is a TRUE statement.

C. This is a FALSE statement because metals do not form anions i.e. negatively charged ions but form cations i.e. positively charged ions.

D. This is a FALSE statement because metals do not form anions i.e. negatively charged ions but form cations i.e. positively charged ions.

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12a. How does the model of the volcano provide evidence for the cycling of Earth materials through the rock cycle?

Bond [772]

Answer:

lava is coming from the crust

Explanation:

volcano's explode with lava because the crust pushes it out

6 0

2 years ago

Which of the following is an example of rapid combustion?

rjkz [21]

phosphorus in water is rapid combustion.

6 0

3 years ago

Students in a chemistry class added 4g of magnesium(Mg) to 50g of hydrochloric acid (HCl). A chemical reaction occurred that pro

GarryVolchara [31]

C that shout be the answer

7 0

3 years ago

Carbon's atomic number is 6. this means that it has __________ electrons. after completing the first energy level, carbon has __

ser-zykov [4K]

a) 6 electrons - because atomic number is the same as the electron number

b) 4 - because 6-2=4

c) Covalent bonds - it needs 4 more electrons for a full outer shell.

4 0

3 years ago

How mant liters at STP are in 0.575 moles of Kr

gizmo_the_mogwai [7]

Answer:

12.9 L Kr

General Formulas and Concepts:

Chemistry - Gas Laws

Using Dimensional Analysis
STP (Standard Conditions for Temperature and Pressure) = 22.4 L per mole at 1 atm, 273 K

Explanation:

Step 1: Define

0.575 mol Kr

Step 2: Identify Conversions

1 mol= 22.4 L at STP

Step 3: Convert

$0.575 \ mol \ Kr(\frac{22.4 \ L \ Kr}{1 \ mol \ Kr} )$ = 12.88 L Kr

Step 4: Check

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

12.88 L Kr ≈ 12.9 L Kr

8 0

3 years ago