lilprincessttow6r6r lilprincessttow6r6r

25-01-2018
Chemistry

contestada

How many neutrons does element X have if its atomic number is 29 and its mass number is 99?

Respuesta :

Аноним Аноним

25-01-2018

number of neutrons = mass number - atomic number

= 99-29 = 70

Answer Link

Otras preguntas

3 moles of nitrogen and 5 moles of hydrogen react to form ammonia. Use the balanced equation below to determine which is the limiting reactant. N2 + 3H2 -->

1) If [tex] \frac{1}{a + 1} + \frac{1}{b + 1} + \frac{1}{c + 1} = 2[/tex][tex]then \: {a}^{2} + {b}^{2} + {c}^{2} is[/tex]Option :- [tex]a) \frac{3}{4} [/tex][t

1. Los niños... fueron a jugar al parque. fue a jugar al parque. fuimos a jugar al parque.

30 points!!!! 2K + 2H2O → 2KOH + H2 This reaction shows which detail about potassium and hydrogen? Hydrogen is more reactive than potassium. Potassium and hydr

In the viable plate count method, a measured sample of a culture is evenly spread across an agar surface and incubated. Each __________ on the agar surface repr

Which is another way to describe a gene? A: a sequence of three base pairs B: a unit of inheritance that transmits information C: a short segment of information

Fill in the missing numbers. 9.223 x ______ = 922.3 0.09223 x _______ = 9.223 92.23 x ______ = 922.3

Which of the following is true about second-person point of view? (5 points) Group of answer choices It uses the word I, and one character tells the story. It u

please I need help immediately

Can someone help me ? :