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const2013 [10]
2 years ago
12

aluminum (al) has three valence electrons and a total of three subshells. without using the periodic table, in which group and p

eriod is aluminum located?
SAT
2 answers:
fgiga [73]2 years ago
6 0

Answer:

its period 3 =)

Explanation:

Lady bird [3.3K]2 years ago
6 0

Answer: The correct answer is Group 3A, Period 3

Explanation:

Atomic number of aluminium is 13. As here n = 3 this means that aluminium element belongs to period.

Since, it contains 3 unpaired electrons. Therefore, in order to attain stability it will readily lose its valence electrons and hence, acquires as charge of +3.

This means that aluminium element belongs to group 3A and period 3.  As it is a p-block element.

Thus, we can conclude that aluminium is located in Group 3A, Period 3.

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This battle was the last battle of the civil war on may 12 & 13, 1865. Question 2 options: battle of the alamo battle of pal
nata0808 [166]

Answer:

Battle of Palmito Ranch

Explanation:

The Battle of Palmito Ranch was the last battle of the civil war. It started on May 12, 1865 and ended May 13.

hope this helps!

6 0
2 years ago
(1) Farmer Ben has only ducks and cows 21 in total. He can’t remember how many of each he has. He knows
gavmur [86]

Answer:

Answer of question 1 :

Explanation:

Let x be the legs of ducks

And y be the legs of cows

According to the question,

2x + 4y = 52...…..(i) ( as ducks ahs two legs and as cows has 4 legs)

As he has 21 animals in total so,

x + y = 21...…..(ii)

We have make the equation. We will solve them by eliminatory method or substitution method. Here, I'll go for substitution method.

From equation (ii)

x = 21 - y....…..(iii)

Putting the value of x in equation (i),

2x + 4y = 52

2( 21 - y ) + 4y = 52

42 - 2y + 4y = 52

2y = 52 - 42

y = 10/2

y = 5 ( He has 2 cows)

putting the value of y in equation (ii)

x + y = 21

x + 5 = 21

x = 21 -5

x = 16 ( He has 16 ducks)

7 0
3 years ago
How many moles of neon would be contained in 4.0 l of neon gas at 2 atm and 127oc?
Sergeeva-Olga [200]

If the pressure, volume, and temperature are 202650 Pa, 0.004 cubic meters, and 400.15 K. Then the number of the mole is 0.24 mol.

<h3>What is thermodynamics?</h3>

It is a branch of science that deals with heat and work transfer.

We know that the Ideal gas equation is given as

PV = nRT

Where

P = Pressure (Pa)

V = Volume (in m³)

n = Number of moles (mol)

R = universal gas constant (8.314 J⋅K⁻¹⋅mol⁻¹)

T = temperature (in K)

We have

P = 2 atm = 202.65 × 10³ Pa

V = 4 liters = 0.004 m³

T = 127 °C = 400.15 K

Then we have

Then the number of the mole will be

\rm n = \dfrac{PV}{RT}\\\\\\n = \dfrac{202.65 \times 10^3 \times 0.004}{8.314 \times 400.15}\\\\\\n = \dfrac{810.6}{3326.85}\\\\\\n = 0.24365 \approx 0.24

More about the thermodynamics link is given below.

brainly.com/question/7206767

#SPJ1

7 0
1 year ago
What effect does mathilde's borrowing the necklace have on the plot of "the necklace"?
VMariaS [17]

Answer:

It is the catalyst for the ensuing events.

3 0
3 years ago
Which word does not go with the other four?
GenaCL600 [577]

Answer:

stack isn't a fit out of these

8 0
3 years ago
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