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
GenaCL600 [577]
3 years ago
5

What are the variables that don't change

Chemistry
1 answer:
Blababa [14]3 years ago
7 0
Constant variable/control variable
You might be interested in
Which law states that the volume of a gas is proportional to the moles of the gas when pressure and temperature are kept constan
Phoenix [80]
<span>Boyles law states that the volume of a gas is proportional to the moles of the gas when pressure and temperature are kept constant.    </span>
3 0
3 years ago
Read 2 more answers
What is the empirical formula for a compound that is 31.9% potassium, 28.9% chlorine, and 39.2% oxygen?
notsponge [240]
The  empirical formula  for a compound   is KClO3

     Explanation 
 
find  the  moles of each  element
moles  = % composition/molar  mass

molar  mass of  of  potassium =39g/mol ,chlorine = 35.5 g/mol, oxygen =16 g/mol

moles  of potassium  =  31.9 / 39 = 0.818  moles
moles of  chlorine    = 28.9/35.5 = 0.814 moles
moles of   oxygen  =  39.2/  16 =  2.45  moles


find the  mole ratio  by  dividing   with  the smallest  mole = 0.814  moles

potassium = 0.818/0.814  =1  
chlorine  =  0.814/0.814 = 1
oxygen =  2.45 /0.814 =3 


the empirical  formula   is therefore = KClO3
7 0
3 years ago
Can someone help me with 3
lozanna [386]
Solidification i believe
5 0
3 years ago
How many protons z and how many neutrons n are there in a nucleus of the most common isotope of silicon, 2814si?
zheka24 [161]
The 28 is the sum of the protons and neutrons in the element silicon.
ALL silicon atoms have 14 protons in the nucleus, so we can turn this into an equation:
#protons + #neutrons = 28
14 + #neutrons = 28
#neutrons = 14
#protons = 14
7 0
3 years ago
Read 2 more answers
Find the mass of 175.4mL of benzene if the density is 0.8786g/ml
bulgar [2K]
Hey there!:

Volume = 175.4 mL

density = 0.8786 g/mL  

mass = ?

Therefore:

D = m / V

0.8786 = m / 175.4

m = 0.8786 * 175.4

m = 154.10644 g

hope this helps!


5 0
3 years ago
Other questions:
  • The process by which molecules of water vapor in the air become liquid water answers
    5·1 answer
  • At 20 degrees celsius, how much sodium chloride could be dissolved in 2L of water
    5·1 answer
  • Why does chocolate melt faster when crushed?
    10·2 answers
  • Man's scientific theories are often in correct because his knowledge is​
    13·1 answer
  • Which of the following descriptions of the storage requirements for alkali metals is the most accurate? Select the correct answe
    5·1 answer
  • Pick a key concept that you understand well and explain it in a way that an elementary school student could understand.
    10·1 answer
  • A system does 125 J of work and cools down by releasing 438 J of heat. The change in internal energy is ____________ J.
    13·1 answer
  • For the reaction represented by the equation 2H2 + O2→ 2H2O, how many grams of water can be produced from 6.0 grams of O2?
    10·1 answer
  • HELPPP<br> What do you think caused this land formation ?
    12·1 answer
  • What volume of a 3.95 M
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!