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3 years ago

In an electrical neutral Atom,..

Chemistry

2 answers:

Leno4ka [110]3 years ago

7 0

Answer :

Option B) The number of protons equals the number of electrons

Doss [256]3 years ago

4 0

B) The number of protons equals the number of electrons

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Which two objects would experience the greatest gravitational force between

Naily [24]

Answer:

Explanation:

The greater the distance apart, the lesser the gravitational force between the objects

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3 years ago

Read 2 more answers

How many moles are in 4.6 x 10^19 atoms? <br><br> *#27 is the question

velikii [3]

There are 0.000076 moles in 4.6 x 10^19 atoms.

3 0

3 years ago

SOVA2 [1]

This problem is providing us with the recommended maintenance dose of penicillin for children as 1.0 mg/kg/hr by injection. Thus, the delivery rate for a 40-pound child is required, if 10 mL of a 25 mg/mL solution of penicillin is added to a 100-mL bottle of saline. At the end, the result is 8.0 mL/hr:

<h3>Dimensional analysis:</h3>

In chemistry, dimensional analysis allows us to obtain a specific result given relevant information about it. Although a formula is not always provided, one can use the units as a reference for the calculations.

For example, this problem asks for the rate, in mL/hr, at which a child gets this dose, so the first step will be to get the mass of the child in kilograms:

$40 lb*\frac{0.4536kg}{1lb}= 18.144kg$

Next, we calculate the rate at which the penicillin is delivered to this child:

$1.0\frac{mg}{kg*hr} *18.144kg=18.144\frac{mg}{hr}$

After that, we calculate the total mass of penicillin that is delivered:

$10mL*25\frac{mg}{mL} =250 mg$

And get the new concentration once it is diluted to 100 mL:

$\frac{250mg}{10mL+100mL}=2.27\frac{mg}{mL}$

And finally, we combine the mg/hr with the mg/mL to get the result in mL/hr as required:

$18.144\frac{mg}{hr} *\frac{1mL}{2.27mg}\\ \\=8.0\frac{mL}{hr}$

Learn more about dimensional analysis: brainly.com/question/10874167

5 0

2 years ago

Which mixture is most likely to form a suspension?flour and liquid water, as in gravy metal coins and liquid water sodium chlori

azamat

<span>The mixture that is most likely to form a suspension is flour and liquid water mixed together, as in a mixture like gravy. A suspension mixture is a mixture that has large solid particles, particles that are large enough for sedimentation.</span>

4 0

3 years ago

Identical wire loops are dipped into Liquid X and Liquid Y, so that a film of liquid forms across the loops (like the bubble sol

muminat

Answer:

Explanation:

Assuming that Liquid X is considered to possess a greater viscosity as well as higher surface tension than liquid Y. Then, liquid X will tend to harbour more pressure inside the liquid.

In addition to that, the greater the surface tension, the greater the force required to expand the liquid's surface area.

This in turn makes the force required to make the loop 5% wider to be greater in FX rather than FY.

Thus, option a is the correct answer.

6 0

3 years ago