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
alexdok [17]
4 years ago
8

Who many weeks in a year?​

Chemistry
1 answer:
ivann1987 [24]4 years ago
5 0

Answer:

there are about 53 weeks

Explanation:

You might be interested in
Balance the following chemical equation (if necessary):
dybincka [34]

Answer: SiCl₄(s) + 4 H₂O(l) → H₄SiO₄(aq) + 4 HCl(aq)

Explanation:
You can pretend there is an imaginary line splitting the chemical equation into two on the arrow to help balance the equation.
Balance out chlorine on both sides, add the coefficient 4 to HCl
now there are 4 chlorines on the left and the right side.
Then, balance out Hydrogen on both sides, add the coefficient 4 to H₂O
now, there are 4*2=8 hydrogens on the left and 4+4=8 hydrogens on the right.
Counting the total number of atoms on both sides of the arrow, the equation is balanced
1 Si = 1 Si
4 Cl = 4 Cl
4 O = 4 O
8 H = 8 H

3 0
2 years ago
Read 2 more answers
What is the correct defination for carbon tetrachloride
V125BC [204]

B - CCL4

This is because it doesn't say Dicarbon or any of that sort, so Carbon is alone. This immediately eiminates the option of C.

A is incorrect as it has Chlorine first rather than Carbon, so that's also incorrect.

D is incorrect as 7 is hepta rather than tetra.

The list is as so;

Mono - 1; Di - 2; Tri - 3; Tetra - 4; Penta - 5; Hexa - 6; Hepta - 7; Octa - 8; Nona - 9; Deca - 10.

Hope this helps!

5 0
3 years ago
What is the chemical formula for pentasodium dichloride?
atroni [7]
Na5Cl2
penta is 5, so 5 sodiums and di is 2, so 2 chloride
5 0
3 years ago
Which of the following is an example of very early scientific research?
goldenfox [79]

Answer:

banging rocks together to see which make make a spark and create fire painting pictures is an example of art and sleeping in caves is survival

7 0
4 years ago
The temperature of a sample of gas at 8.5 atm and 59.2 °C increases to 140.0 °C. If the
labwork [276]

Answer:

since that's the closest option we have

10.6atm

Explanation:

Since volume is constant

P1/T1 = P2/T1

P1 =8.5atm

T1 = 59.2°C = 332.2k

T2 = 140°C = 413k

P2 = ?

8.5/332.2 = P2/413

0.026 = P2/413

P2 = 0.026 x 413

P2 = 10.74atm

5 0
3 years ago
Other questions:
  • In the citric acid cycle, atp molecules are produced by _____.
    9·1 answer
  • ASAP PLEASE<br> Explain the difference between a limiting reactant and excess reactant
    13·1 answer
  • Which of the following statements correctly relates mutations and survival rates of plants?
    14·1 answer
  • If an atom has sp hybridization in a molecule: the maximum number of σ bonds that the atom can form is
    9·1 answer
  • What type of equation is it and balance it
    10·1 answer
  • Insotopes of the same element have different____.​
    7·2 answers
  • Calculate the number of moles of gas in a basketball inflated to a total pressure of 1.65 atm with a volume of 3.2 L at 250C. (
    13·1 answer
  • Write the name for the compound Al₂S₃
    6·2 answers
  • I need help with this problem please
    5·1 answer
  • I NEED HELP ASAP !!!!!!!!!!!!!!!!!!!!!1
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!