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serg [7]
3 years ago
15

Arrange these elements according to atomic Pb Si C Sn Ge

Chemistry
1 answer:
choli [55]3 years ago
5 0
........C<Si<Ge<Sn<Pb
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Characteristics of a substance that can be measured or observed by changing the identity of the material is a
algol [13]
C cause ur changing the identity of the material
4 0
2 years ago
If the mass of a liquid reactant is 10g and the mass of a powder reactant is 5g then what should the mass of the product be acco
guapka [62]

Answer:15g

Explanation:

According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.

10g + 5g ➡️ 15g

6 0
3 years ago
Methane (CH4), ammonia (NH3), and oxygen (O2) can react to form hydrogen cyanide (HCN) and water according to this equation:
egoroff_w [7]

The grams  of  oxygen that are required  to produce 1  mole  of H₂O  is 16 g ( answer  B)

<u><em> calculation</em></u>

2 CH₄  + 2NH₃ +3 O₂ → 2HCN  + 6H₂O

step 1: use the mole ratio to find moles of O₂

from equation above the  mole ratio  of O₂: H₂O  is 3:6 therefore the moles of O₂  = 1 mole x3/6 =0.5 moles

step  2: find   mass of O₂

mass= moles x molar mass

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6 0
3 years ago
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Why do many metal ions produce acidic solutions when dissolved in water?
lakkis [162]
<span>Water molecules form a complex with metal ions (usually a 6-coordinate complex). And the high charge density on a metal ion draws electrons away from the water molecules, making the O-H bonds more polar than normal. This allows the dissociation of the protons, making solutions of most metal ions acidic</span>
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Which of the following would not be studied within the topic of stoichiometry?
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2 years ago
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