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3 years ago

Which group of atoms has this electron dot structure? noble gases non-metals metals network solids alkaline liquids

1 answer:

3 0

The Answer is Noble gases.
It's consequential to note that helium has only two electrons so it does not have the equal electron dot structure as the other noble gases. Electron dot structure displays the number of valence electrons (electrons in the highest energy level) for an atom.

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An acid

tekilochka [14]

The answer is A. Has a low pH in solution.

5 0

2 years ago

Can you please help me !!

ioda

Answer:

Explanation:

A) O2 (non polar covalent)

B) HF (polar covalent)

C) NaCl (because its ionic)

im not 100% sure hope it helps

7 0

2 years ago

How many 3-liter balloons could the 12-L helium tank pressurized to 160 atm fill? Keep in mind that an "exhausted" helium tank i

vaieri [72.5K]

Answer:

The 12L helium tank pressurized to 160 atm will fill 636 3-liter balloons

Explanation:

It is possible to answer this question using Boyle's law:

$P_1V_1=P_2V_2$

Where P₁ is the pressure of the tank (160atm), V₁ is the volume of the tank (12L), P₂ is the pressure of the balloons (1atm, atmospheric pressure) And V₂ is the volume this gas will occupy at 1 atm, thus:

160atm×12L = 1atm×V₂

V₂ = 1920L

As the tank will never be empty, the volume of the gas able to fill balloons is the total volume minus 12L, thus the volume of helium able to fill balloons is:

1920L - 12L = 1908L

1908L will fill:

1908L× $\frac{1balloon}{3L}$ = 636 balloons

I hope it helps!

7 0

3 years ago

A patient gets 2.1 L of fluid over 19 hours through an IV. The drop factor is 20 gtt/mL.Calculate the drip rate in drops per min

Aleks [24]

The rate of infusion is 2.1L/19h or 2100mL/19h (as 1L = 100 mL).

To convert 19 hours to minutes we multiply as follows:

19 hours = (19 hours) x (60 minutes/1 hour) = 1140 minutes

So the rate of infusion becomes:

2100mL /1140 min

In order to converted mL to drops (gtt) we multiply the rate of infusion with the drop factor to get the drip rate:

(2100mL/1140min) x (20 gtt/mL) = 36.8 gtt/min

8 0

3 years ago

Bromine and nitrogen combine to form nitrogen tribromide (NBr3). How many liters of NBr3 gas are produced when 6.85 L of bromine

dlinn [17]

Answer:

4.567 ltr

Explanation:

both are gases

N2 +Br2 =NBr3

balancing

N2 +3B2 = 2 NBr3

now

3 litr of B2 gives 2 liter of NBr3

6.85 litr of B2 gives 2/3 *6.85 litr NBr3 = 4.567ltr

7 0

2 years ago