The answer I would have to say would possibly be C
Answer:
101 g
Explanation:
M(O2) = 2g*16.0 = 32.0 g/ mol
M(MgO) = 24.3 + 16.0 = 40.3 g/mol
2 Mg + O2 → 2MgO
from reaction 1 mol 2 mol
from reaction 1 mol*32.0 g/mol 2 mol*40.3 g/mol
given 40 g x g
1 mol*32.0 g/mol --- 2 mol*40.3 g/mol
40 g --- x g
x = (40*2*40.3)/(1*32.0) = 100.75 g ≈ 101 g
The answer is: " NaCl + H₂O " ; (or; write as: " H₂O + NaCl " ) .
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Specifically:
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HCl + NaOH —> NaCl + H₂O ; or; write as:
NaOH + HCl —> H₂O + NaCl .
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This type of "double-replacement" reaction is called "neutralization".
Since we are adding a strong acid to a strong base (reactants), we know that the product will be: 1) a salt ; and 2) water. Since we know one of the reactants will be "water" (H₂O) ; we can find the base (i.e. , the "remaining product") from selecting the "unused elements" to form the corresponding "salt".
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Answer:
Explanation:
Name: Tantalum
Symbol: Ta
Atomic Number: 73
Atomic Mass: 180.9479 amu
Melting Point: 2996.0 °C (3269.15 K, 5424.8 °F)
Boiling Point: 5425.0 °C (5698.15 K, 9797.0 °F)
Number of Protons/Electrons: 73
Number of Neutrons: 108
Classification: Transition Metal
Crystal Structure: Cubic
Density @ 293 K: 16.654 g/cm3
Color: gray
Answer:
False
Explanation:
The displacement method is not used to find the volume of irregularly shaped objects. Rather the opposite.