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
Nata [24]
4 years ago
5

An element's atomic number is 87. how many protons would an atom of this element have

Chemistry
1 answer:
andreev551 [17]4 years ago
5 0
atomic number is equal to proton number
so the proton number will be 87
You might be interested in
How to distinguish between polar and non-polar molecules/compound? For instance, one that you have not studied before but have t
aleksley [76]
<span> a molecule is polar if we find electronegativity differences between two differing atoms.
when there is large difference between electronegativity values, the more polar the molecule is.
</span><span> when  the electrons are shared equally between the nuclei.then the molecule is non polar
</span>  in Cl2<span> moleculethere is no  no polar bonds because the electron charge is  same on both atoms.
 It is therefore a nonpolar molecule.
bonds in </span>hydrocarbon molecules<span>,  as hexane, </span><span>C6H</span>14, are polar, 
7 0
3 years ago
Describe the acceleration of your bicycle as you ride it from your home to the stoe
NikAS [45]
You will probably need more info, but it is probably accelerating and moving from one place to the next
4 0
3 years ago
Read 2 more answers
Calculate the mass of 4.50 moles of Ca3(PO3)4
Ivahew [28]
Stoichiometry: 
First, calculate the number of grams for one mole of Ca3 (PO3)4
(3 * (Mass of Ca)) + (4 * (Mass of P + (3 * Mass of Oxygen)))
= (3*40.08) + 4(30.97 + (3*16.00))
=(120.24) + 4(78.97)
=436.12 g / mol Ca3(PO3)4 
This means there are 436.12 g per 1 mole of Ca(PO3)4. Since there are 4.50 moles of Calcium Phosphate, mulitply the molar mass of Ca(PO3)4 by 4.50 and you should get 1962.54 g. Since there are 3 sigfigs, the final answer is 1960 g.

on a side note: I put in all my work in case 1. your periodic table if different, 2. my work is wrong, 3. you put in the question wrong because I feel that the actual compound would be Ca3(PO4)3 instead of Ca3(PO3)4 (if this is the case, the answer should be 1820 g).
8 0
4 years ago
Read 2 more answers
What are intermolecular forces​
Vilka [71]
They hold molecular bonds together in solds and liquids.
4 0
3 years ago
Contrast the silica content of magma in quiet and explosive eruptions
klemol [59]
Magma in quiet eruptions has a low content in silica , while in explosive eruptions, it has a high Content in silica.  A volcano that erupts quietly has  magma that is low in silica. Low-silica magma has low viscosity and flows easily.  A volcano that erupts explosively has magma that is high in silica. High-silica magma has high viscosity, making it thick and sticky, thus it flows slowly.
3 0
3 years ago
Other questions:
  • Mg + _LINO3 → _Mg(NO3)2 + _Li
    7·1 answer
  • The vapor pressure of substance X is 100. mm Hg at 1080.°C. The vapor pressure of substance X increases to 600. mm Hg at 1220.°C
    13·1 answer
  • How many grams are contained in 1.0 oz​
    14·2 answers
  • Pls help ill mark you as brainliest
    9·1 answer
  • This organism breaks down nonliving matter into energy-rich compounds giving it back to the soil is called a​
    10·1 answer
  • What happens when KCl is dissolved in water?
    6·2 answers
  • Can someone help me plz
    12·1 answer
  • HELP ASAP PLEASE!!!!
    9·1 answer
  • If a recycling center collects 3245 aluminum cans and there are 22 aluminum cans in 1 lb what volume in liters
    9·1 answer
  • 4) Find the mass of 1.46 mol of Al2(SO4)3.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!