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
Inessa [10]
3 years ago
8

Please help me :) ;0 :3

Chemistry
2 answers:
balandron [24]3 years ago
6 0
C because opening switch 1 will because the circuit connecting the green bulb, bell, and battery will be broken
Firdavs [7]3 years ago
4 0
The answer is C. If u want to know how just ask.
You might be interested in
A compound containing sodium, chlorine, and oxygen is 25.42% sodium by mass. A 3.25 g sample gives 4.33×1022 atoms of oxygen. Wh
Tcecarenko [31]
step  one 
calculate  the  %  of  oxygen
from  avogadro  constant
1moles =  6.02  x  10  ^23  atoms
what  about    4.33  x10^22  atoms
= ( 4.33  x  10^ 22 x 1 mole )  /  6.02  10^23=   0.0719 moles
mass=  0.0719  x16=  1.1504   g
% composition   is therefore= ( 1.1504/3.25)  x100 = 35.40%
 step  two
calculate the  %  composition  of  chrorine
100-  (25.42  +  35.40)=39.18%

step  3
calculate the  moles   of  each  element
that   is  
Na  =  25.42  /23=1.1052  moles
Cl=  39.18  /35.5=1.1037moles
O=  35.40/16=  2.2125   moles
step  4
find  the  mole  ratio  by  dividing  each  mole  by  1.1037  moles
that  is
Na  =  1.1052/1.1037=1.001
Cl= 1.1037/1.1037=  1
0=2.2125 = 2
therefore  the  empirical  formula= NaClO2
8 0
3 years ago
Makes up the core of the other planets<br> stars with an M and ends with E
Sonbull [250]

Answer:

its iron not m or e

Explanation:

3 0
2 years ago
Read 2 more answers
If a reaction has a theoretical yield of 10.0 g and a student does the reaction and
lbvjy [14]

Answer:

78.4%

Explanation:

yield = actual/theoretical = 7.84/10 = 78.4%

6 0
3 years ago
Read 2 more answers
PLEASE HELP
Deffense [45]

The answer is A. Isotopes only differ in the number of neutrons in the nucleus of their atoms. Otherwise, all other subatomic particles are the same. The isotope with the more neutrons in its nucleus is therefore, heavier (have higher mass number). They share the same chemical properties but have slight physical differences such as boiling points with the heavier element having a slightly higher boiling point that the lighter element.

3 0
3 years ago
Read 2 more answers
A certain gas is present in a 10.0 LL cylinder at 4.0 atmatm pressure. If the pressure is increased to 8.0 atmatm the volume of
ICE Princess25 [194]

Answer:

The gas obeys Boyle’s law and the value of k_i\&k_f both are equal to 40.0 atm L.

Explanation:

Initial volume of the gas = V_1=10.0 L

Initial pressure of the gas = P_1=4.0 atm

Final volume of the gas = V_2=5.0 L

Final pressure of the gas = P_2=8.0 atm

This law states that pressure is inversely proportional to the volume of the gas at constant temperature.  

PV=k

The equation given by this law is:

P_1V_1=P_2V_2

P_1\propto \frac{1}{V_1}

P_1V_1=k_i

k_i=4.0 atm\times 10.0 L = 40.0 atm L

P_2\propto \frac{1}{V_2}

P_V_2=k_f

k_f=8.0 atm\times 5.0 L = 40.0 atm L

k_i=k_f=40.0 atm L

The gas in the cylinder is obeying Boyle's law.

The gas obeys Boyle’s law and the value of k_i\&k_f both are equal to 40.0 atm L.

6 0
3 years ago
Other questions:
  • Calculation of NCl3
    6·1 answer
  • The angular momentum quantum number for the outermost electrons in a phosphorus atom in the ground state is __________.
    8·1 answer
  • You could add HCl(aq) to the solution to precipitate out AgCl(s). What volume of a 0.190 M HCl(aq) solution is needed to precipi
    14·1 answer
  • How many grams are there in 7.4 x 10^23 molecules of AgNO3?
    6·1 answer
  • Which of the following forms a water solution that will conduct electricity?
    15·1 answer
  • Under which conditions can an eclipse occur?
    13·2 answers
  • What determines how many electrons an atom will gain, lose, or share when it forms a chemical bond?
    5·1 answer
  • HELP ME PLEASE!!!!! I NEED TO GET THIS RIGHT I CANT FAIL
    9·1 answer
  • Most amino acids require______.
    7·1 answer
  • In a constant-pressure calorimeter, the temperature of 60.0 g of water increases by 4.50 °C. What amount of heat is transferred
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!