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3 years ago

Name the type of bond between atoms in ammonia molecule. Give a reason for your answer

Chemistry

2 answers:

Likurg_2 [28]3 years ago

6 0

Answer:

Covalent bonds are formed when electrons are shared between elements that are nonmetals. The ammonium ion, NH+4 , would have covalent bonds because both nitrogen and hydrogen are nonmetals. ... The rest of the bonds all contain electrons from both hydrogen and nitrogen, so they would be considered ordinary covalent bonds.

mel-nik [20]3 years ago

6 0

Interesting I believe for this to be something I’m not sure what but something

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If 6.49 mol of ethane (C2H6) undergo combustion according to the unbalanced equation

MArishka [77]

Answer:

22.715 moles of oxygen are used

Explanation:

Given data:

Number of moles of ethane = 6.49 mol

Number of moles of O₂ required = ?

Solution:

Chemical equation:

2C₂H₆ + 7O₂ → 4CO₂ + 6H₂O

Now we will compare the moles of oxygen with ethane.

C₂H₆ : O₂

2 : 7

6.49 : 7/2×6.49 = 22.715 mol

Thus, 22.715 moles of oxygen are used.

3 0

3 years ago

In the number 12.345, the 4 is in the<br> place.

goldfiish [28.3K]

4 is in the place of Hundredth

3 0

3 years ago

What mass in kilograms does 4.41 moles of copper have?

aalyn [17]

Answer:

0.280 kg

Explanation:

m= n × MM

where

m is mass in grams

n is moles &

MM is molecular mass

The molecular mass of copper can be found on the periodic table and is 63.546.

We now have all the required information to perform the calculation

m= 4.41 × 63.546

m= 280.23786

m= 280 g

In order to convert this value to kilograms, divide by 1000

280/ 1000

= 0.280 kg

5 0

3 years ago

Two moles of an ideal gas are placed in a container whose volume is 2.3 x 10^-3 m3. The absolute pressure of the gas is 6.9 x 10

PtichkaEL [24]

Answer:

$K.E.=1.97\times 10^{-21}\ J$

Explanation:

Given that:-

Pressure = $6.9\times 10^5\ Pa$

The expression for the conversion of pressure in Pascal to pressure in atm is shown below:

P (Pa) = $\frac {1}{101325}$ P (atm)

Given the value of pressure = 43,836 Pa

So,

$6.9\times 10^5\ Pa$ = $\frac{6.9\times 10^5}{101325}$ atm

Pressure = 6.80977 atm

Volume = $2.3\times 10^{-3}\ m^3$ = 2.3 L ( 1 m³ = 1000 L)

n = 2 mol

Using ideal gas equation as:

PV=nRT

where,

P is the pressure

V is the volume

n is the number of moles

T is the temperature

R is Gas constant having value = 0.0821 L.atm/K.mol

Applying the equation as:

6.80977 atm × 2.3 L = 2 mol × 0.0821 L.atm/K.mol × T

⇒T = 95.39 K

The expression for the kinetic energy is:-

$K.E.=\frac{3}{2}\times K\times T$

k is Boltzmann's constant = $1.38\times 10^{-23}\ J/K$

T is the temperature

So, $K.E.=\frac{3}{2}\times 1.38\times 10^{-23}\times 95.39\ J$

$K.E.=1.97\times 10^{-21}\ J$

3 0

3 years ago

Pick the correct one and why?

nadezda [96]

Answer:

I agree with Lawana's idea because not all of the substances react with each other to form a new substances.

hope this helps you

4 0

3 years ago