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3 years ago

At the center of every atom lies a small, dense ____________ that is positively charged

Chemistry

2 answers:

Anna71 [15]3 years ago

6 0

I believe the answer is nucleus

Sedbober [7]3 years ago

3 0

At the center of every atom lies a small, dense "nucleus" that is positively charged.

Atom is the smallest unit of matter. It is made up of electrons, protons and neutrons. Electrons are negatively charged particles that are found scattered in different energy levels outside the nucleus. Protons are positively charged particles present inside the nucleus. Neutrons do not carry charge and found inside the nucleus. Thus, protons and neutrons make up the nucleus of an atom. Since, protons are positively charged and neutrons are uncharged particles, the charge of nucleus becomes positive.

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When discussing evolution, adaptation is *

Mamont248 [21]

It’s C I hope this was useful and have a great day!

8 0

3 years ago

Need help !!!!! ASAP

Oksi-84 [34.3K]

<h2>Hello!</h2>

The answer is:

The approximate volume is 9.84 L.

$V=9.84L$

Since we are given the numer of moles, the temperature and the pressure of the gas, we can calculate the approximate volume using The Ideal Gas Law.

The Ideal Gas Law is based on Boyle's Law, Gay-Lussac's Law, Charles's Law, and Avogadro's Law, and it's described by the following equation:

$PV=nRT$

Where,

P is the pressure of the gas.

V is the volume of the gas.

n is the number of moles of the gas.

T is the absolute temperature of the gas (Kelvin).

R is the ideal gas constant, which is equal to:

$R=0.082\frac{atm.L}{mol.K}$

So, we are given the information:

$n=1.5mol\\Temperature=300K\\Pressure=3.75atm$

Now, substituting the given information and isolating the Volume from The Ideal Gas Law equation, we have:

$PV=nRT$

$V=\frac{nRT}{P}$

$3.75atm*V=1.5mol*0.082*\frac{atm.L}{mol.K}*300K$

$V=\frac{ 1.5mol*0.082*\frac{atm.L}{mol.K}*300K}{3.75atm}\\\\V=\frac{36.9atm.L}{3.75atm}=9.84L$

So, the approximate volume is 9.84 L.

$V=9.84L$

Have a nice day!

7 0

4 years ago

Find the sum of - 1 /5 and reciprocal of 6 /11

Bess [88]

Answer:

Solution,

Reciprocal of 6/11=11/6

Now,

-1/5+11/6

=-1*6+11*5/30

=-6+55/30

=49/30

Hope it helps

Good luck on your assignment

7 0

3 years ago

A cell is constructed of the following two half cells.

Aleonysh [2.5K]

I believe the correct answer from the choices listed above is option A. The E+ of the cell would be 2.47 V. E of the cell is given by the formula E(cathode) - E(anode) . So in this case the first half cell reaction is the reaction that takes place in the cathode and the second one takes place in the anode.

5 0

3 years ago

A cube of plastic 1.2x10^-5 km on a side has a mass of 1.1 g. what is its density in g/cm^3

Vesna [10]

Length of 1 side 1.2*10^-5km =1.2*10^-5*10^5 =1.2cm

volume of the cube (1.2)^3=1.728 cm^3 

density= mass/volume= 1.1/1.728=0.636 g/cm^3

7 0

4 years ago

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