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erastova [34]
3 years ago
13

Question in the picture thank you sm!!!!​

Chemistry
1 answer:
Pepsi [2]3 years ago
4 0

Answer:

Explanation:

Reactants                                    Product

H = 2                                          H=2

Cl=2                                             Cl=2      

Zn=1                                            Zn=1    

Total number of atoms  5            Total number of atoms  5    

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mars1129 [50]

Answer: Yes it is. Rust would be considered a chemical reaction because it changes the chemical makeup of the metal.

Explanation:

5 0
2 years ago
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What is the empirical formula for CaCo3?*
GalinKa [24]

This problem is requiring the empirical formula for CaCO₃, which is its molecular formula, and turns out to be equal, this is A. CaCO3 according to the following:

<h3>Empirical formulas:</h3><h3 />

In chemistry, molecular formulas show both the actual type and number of atoms in a chemical compound, based on the elements across the periodic table and the subscripts standing for the number of atoms in the compound.

However, the empirical formula is a reduced expression of the molecular one, which shows the minimum number of atoms in a compound after simplifying to the smallest whole numbers.

In such a way, since the given compound is CaCO₃ and both Ca and C have a one as their subscript, it is not possible to simplify any further and therefore the empirical formula equals the molecular one this time, making the answer to be A. CaCO3.

Learn more about empirical formulas: brainly.com/question/1247523

5 0
2 years ago
The minimum energy required to break the oxygen-oxygen bond in oxygen is 495 kJ/mol. What is the longest wavelength of radiation
Sergeeva-Olga [200]

Answer:

241 nm, it is UV light range

Explanation:

The minimum energy needed required to break the oxygen-oxygen bond = 495 kJ/mol

Energy needed for 1 molecule of oxygen = 495 × 10³ J / avogadro's constant = 495 × 10³ J  / ( 6.02 × 10²³) = 8.223 × 10⁻¹⁹ J

Energy = hv

where h = Planck constant = 6.626 × 10 ⁻³⁴ m²kg/s and v = frequency

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UV light wavelength is between 400 nm - 10 nm

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2 years ago
Why does magnesium nitrate not react with Magnesium sulfate?
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2 years ago
Generally, A loses electrons when reacting with nonmetals and gains electrons when reacting with metals. A is a(n):
lukranit [14]
Sorry I don’t exactly know I have exams rn I need points
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