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Eva8 [605]
3 years ago
11

How many hydrogen atoms are in 2NH3

Chemistry
2 answers:
Nuetrik [128]3 years ago
5 0
There are 3 hydrogen atoms.
Natalka [10]3 years ago
3 0
There would be 3 hydrogen atoms and you can check because the number to the right of the atom tells you how many atoms of that there are assuming it's down low
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The central Xe atom in the XeF4 molecule has ________ unbonded electron pair(s) and ________ bonded electron pair(s) in its vale
Dimas [21]

Answer:

Lewis structure in attachment.

Explanation:

Atoms of elements in and beyond the third period of the  periodic table form some compounds in which more than eight electrons surround the  central atom. In addition to the 3s and 3p orbitals, elements in the third period also  have 3d orbitals that can be used in bonding. These orbitals enable an atom to form  an <u>expanded octet</u>.

The central Xe atom in the XeF₄ molecule has <u>two</u> unbonded electron pairs and <u>four</u> bonded electron pairs in its valence shell.

8 0
2 years ago
if 11.74 liters of gas at STP are pumped into a basketball, how many moles of gas are in the basketball? assume the basketball w
ser-zykov [4K]

Answer:

0.52 mol

Explanation:

Using the general gas equation formula:

PV = nRT

Where;

P = pressure (atm)

V = volume (Liters)

n = number of moles (mol)

R = gas law constant (0.0821 Latm/molK)

T = temperature (K)

At STP (standard temperature and pressure), temperature of a gas is 273K, while its pressure is 1 atm

Using PV = nRT

n = PV/RT

n = (1 × 11.74) ÷ (0.0821 × 273)

n = 11.74 ÷ 22.41

n = 0.52 mol

There are 0.52 moles in the basketball

6 0
3 years ago
Classify N2 as a substance
ludmilkaskok [199]
N2O is compound becoz it has more than one type of atoms. 

<span>Air is homogeneous mixture becoz it has different gases which are does not bonded to each other</span>
6 0
3 years ago
Are elements always transparent
Dmitry_Shevchenko [17]

No, the elements are not always transparent.

<u>Explanation:</u>

The elements become transparent when the light passes through those elements. Transparency is caused because of the transmission and the passing of the light waves through these elements.

But the metals do not become transparent even when the light waves pass through these metals. Metals do not become transparent because the refractive index in them is very big.

8 0
2 years ago
Velocity is a vector quantity.Why?​
Alika [10]

Answer:

Has size and magnitude whereas a scalar quantity has only size

3 0
2 years ago
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