1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Aneli [31]
3 years ago
12

Give the nuclear symbol for the isotope of silicon for which a=29? Enter the nuclear symbol for the isotope (e.G., 42he).

Chemistry
1 answer:
quester [9]3 years ago
7 0

The mass number is the summation of number of proton and neutron present in a nucleus of an atom. For the neutral atom the number of positive charge (number of proton) must be equal to the number of electrons. The number of electrons present in an atom is the atomic number of the atom. The standard way to express the mass number (a) and atomic number (m) of a atom (say X) is x^{a}_{m}. Now for silicon number of electron or atomic number is 14. And the mass number (a) given 29. Thus the expression nucleus of silicon will be Si^{29}_{14}

You might be interested in
Someone please helpppp!!!!!!Question 7
Snezhnost [94]

answer:

612.5

Explanation:

from the equation, no. of mole of iron oxide is obtaibed from mass over molar mass equals to 5.5 moles, taking mole ratio as 1:2 to get moles of iron as 10.94 moles, then the mass is obtained by moles of iron times molar mass

5 0
3 years ago
Which of the following is NOT true about relative dating?
Igoryamba

Answer:

It uses fossils to help pinpoint the ages of rocks.

Explanation:

Radiocarbon  dating can not be used  to determine the age of rocks.

Carbon dating works well only for objects that are less than 50,000 years.  Most rocks are far older than that. Over time, carbon-14 decays gradually  into nitrogen. Hence, we can not really use radiocarbon dating to determine the absolute age of a rock sample since the carbon-14 in the fossils of ancient rock samples may have completely decayed.

3 0
3 years ago
Calcola la massa (in g) di un oggetto d'oro che ha
AfilCa [17]

translate please I'm confused

Explanation:

.

3 0
3 years ago
Draw the major organic product for the reaction of 1-phenylpropan-1-one with the provided phosphonium ylide.
prohojiy [21]

Answer:

2-methylene propylbenzene

Explanation:

The Wittig Reaction is a reaction that converts aldehydes and ketones into alkenes through reaction with a phosphorus ylide.

The ketone in this case is 1-phenylpropan-1-one. The provided phosphonium ylide is shown in the image attached. The reaction involves;

i) alkylation  

ii) addition

The product of the major organic product of the reaction is 2-methylene propylbenzene.

4 0
3 years ago
Which condition must be met in order for an equation to be balanced? The elements in the reactants are the same as the elements
Nookie1986 [14]

Answer:

There must be an equal amount of each element on both sides of the equation.

Hope this helps

good luck

8 0
3 years ago
Read 2 more answers
Other questions:
  • Convert 2.34x10^5 ms to cs
    13·1 answer
  • What is the product when magnesium reacts with sulfuric acid? mg(s) h2so4(aq) →what is the product when magnesium reacts with su
    14·2 answers
  • Calculate the density of a material that has mass of 52.457g and a volume of 13.5 cm3
    14·1 answer
  • Use the drop-down menu to complete the sentence.
    6·2 answers
  • Every year 5.5 billion tons of carbon is released through burning fossil fuels . Compare this to the weight of adult African ele
    10·1 answer
  • How to combine elements to make compounds?
    13·1 answer
  • What type of reaction is Mg + Cl^2>MgCl^2
    9·1 answer
  • What type of chemical reaction is the following reaction: Zn + 2HCI --> ZnCl2 + H2?
    11·1 answer
  • Describe how greater distance affects the appearance of an object’s size and brightness
    5·1 answer
  • 15.La voiture ................... devant cet hôtel .Single choice.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!