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riadik2000 [5.3K]
3 years ago
11

Why do atoms always have an overall neutral charge?

Chemistry
2 answers:
svetoff [14.1K]3 years ago
7 0
Because atoms generally have the same amount of positives (protons) as negatives(elections)
PSYCHO15rus [73]3 years ago
5 0
This means the nucleus of an atom is always positively charged
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How many moles of SnF₂ will be produced along with 48 grams of H₂? *
Oxana [17]

Answer:

The correct option is;

24 moles

Explanation:

Here, we have the reaction as follows;

Sn(s) + 2HF(g) → SnF₂ (s) + H₂ (g)

Therefore, one mole of Sn reacts with 2 moles HF to form one mole of SnF₂ and one mole of H₂

Molar mass of H₂ = 2.01588 g/mol

Therefore, the number of moles of H₂ in 48 grams of H₂ is given by the relation;

Number \ of  \ moles \ of \, H_2 = \frac{Mass \ of  H_2}{Molar \ Mass \ of  H_2}=\frac{48}{2.01588} = 23.8109 \ moles \approx 24 \ moles

Since one mole each of SnF₂ and H₂ are produced, the number of moles of SnF₂ produced = 24 moles.

The number of moles of SnF₂ that will be produced is 24 moles.

6 0
3 years ago
Write the expected ground electronic configuratio for the noble gas with electron occupying 4f orbitals?
lisov135 [29]

Answer:

There are main six noble gases in the periodic table. The filling of 4f-orbitals occurs after 6s orbitals. The noble gas that belongs to the sixth period is Radon. Its electronic configuration is [ X e ] 6 s 2 4 f 14 5 d 10 6 p 6  .

Therefore, the name of noble gas is Radon.

3 0
2 years ago
A local am radio station broadcasts at a wavelength of 349m, calculate the energy of the wavelength at which it is broadcasting?
Juli2301 [7.4K]

Answer:

E = 5.69x10⁻²⁸m

Explanation:

To solve this question we neeed to convert the wavelength in meters to energy in joules using the equation:

E = hc / λ

<em>Where E is energy in joules, h is Planck's constant = 6.626x10⁻³⁴Js</em>

<em>c is light constant = 3.0x10⁸m/s</em>

<em>And λ is wavelength in meters = 349m</em>

Replacing:

E = 6.626x10⁻³⁴Js*3.0x10⁸m/s / 349m

E = 5.69x10⁻²⁸m

5 0
3 years ago
How adding tin to copper makes the bronze alloy harder?
andrey2020 [161]
It makes the bronze stronger and harder than either of the other two medals
8 0
3 years ago
Read 2 more answers
What substance is acting as the Brønsted-Lowry base in the forward reaction below? H2O + HCI ----&gt; H3O+ CI-
yarga [219]
H2O is the Bronsted-Lowry base because it accepts the hydrogen ion to become H3O after the reaction is complete.
6 0
2 years ago
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