Sarah is ordering cheese pizza for a party of ten people she knows each pizza has 8 slices to figure out how many pizzas to orde
2 answers:
Answer:
The amount of slices every person will eat
Explanation:
We know each pizza has 8 slices and 10 persons will attend this party. If we consider a mean of 3 slices per person we'll need a total of 30 slices (10x3=30), now we divide these 30 slices between the 8 slices we haver per pizza in order to have the number of pizzas needed.
<em>Since we can't order 3.75 pizzas we round this number to 4, this way we will have 32 slices. (4x8=32)</em>
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The daughter isotope (a decay product)of O-15 = N-15(Nitrogen 15)
<h3>Further explanation </h3>Radioactivity is the process of unstable isotopes to stable isotopes by decay, by emitting certain particles,
- alpha α particles ₂He⁴
- beta β ₋₁e⁰ particles
- gamma particles γ
- positron particles ₁e⁰
O-15 emits positron particles ₁e⁰, so the atomic number decreases by 1, the mass number is the same
Reaction
The mass number of the daughter isotope = 15, atomic number = 7
If we look at the periodic system, the element with atomic number 7 is Nitrogen (N)