Density
=mass÷volume
=19.67÷5.90
=3.33 g/ml
The number of protons an element has is the same as the atomic number, so the element would have 86 protons.
Answer: Endothermic
Explanation:
Bond-breaking is an endothermic process. Energy is released when new bonds form. Bond-making is an exothermic process. Whether a reaction is endothermic or exothermic depends on the difference between the energy needed to break bonds and the energy released when new bonds form.
Answer:
Correct option is A)
[H
+
]=
KaC
=
1.8×10
−6
=1.34×10
−3
pH=−log[H
+
]
=2.88
Explanation:
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The answer is B because the mice and foxes are in competition for limited resources with eachother
