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
Semenov [28]
3 years ago
7

Please answer this(science)

Chemistry
1 answer:
Mandarinka [93]3 years ago
7 0
The first one would be using solar systems


You might be interested in
Construct an explanation using Newton's Laws of Motion to describe the effects of balanced and unbalanced forces on the motion o
julsineya [31]

Answer:

The manner in which objects will move is determined by the answer to this question. Unbalanced forces will cause objects to change their state of motion

Explanation:

Since these two forces are of equal magnitude and in opposite directions, they balance each other.

7 0
2 years ago
Read 2 more answers
23. The reaction
Sindrei [870]

Answer:

b mi disputa se eu não asetar

6 0
2 years ago
If a 0.10 M solution of a colored substance has a maximum absorbance at 500 nm and an absorbance of 0.26 M at this wavelength, w
Mashcka [7]
Absorbance is related to the concentration of a substance using the Beer-Lambert's Law. According to this law, absorbance is linearly related to concentration. However, this is only true up to a certain concentration depending on the substance. For this case, we assume that the said law is applicable.

A = kC
Using the first conditions, ewe solve for k.
0.26 = k (0.10)
k = 2.6

A = kC
A = 2.6 (0.20) = 0.52

Therefore, the absorbance at a concentration of 0.20 M and wavelength of 500nm is 0.52.
7 0
2 years ago
How many molecules in 4NH3
Snezhnost [94]

Answer:

16

Explanation:

4 nitrogen (N) atoms and 12 (3×4) atoms in Hydrogen (H)

Total = 4 + 12 = 16 molecules

8 0
2 years ago
What is the mass of 2.2x10^9 molecules of CO2? *​
olga55 [171]

Answer: 9.68 x 10^10 grams.

Explanation:

Given that:

Mass of CO2 = ?

Number of molecules of CO2 = 2.2x10^9 molecules

Molar mass of CO2 = ? (let unknown value be Z)

For the molar mass of CO2: Atomic mass of Carbon = 12; Oxygen = 16

= 12 + (16 x 2)

= 12 + 32 = 44g/mol

Apply the formula:

Number of molecules = (Mass of CO2 in grams/Molar mass)

2.2x10^9 molecules = Z/44g/mol

Z = 2.2x10^9 molecules x 44g/mol

Z = 9.68 x 10^10g

Thus, the mass of 2.2x10^9 molecules of CO2 is 9.68 x 10^10 grams.

4 0
2 years ago
Other questions:
  • X2SO3 Enter the group number of X. How do I find this? Chemistry
    12·2 answers
  • If one parent is TT (tall), and the other parent is tt (short). What percentage of the offspring will be short
    15·1 answer
  • Any entrée can be labeled "healthy" on a menu as long as it contains natural ingredients. True False
    15·2 answers
  • What is the pH of a mixture of 0.042 M NaH2PO4 and 0.058 M Na2HPO4? Hint: The pKa of phosphate is 6.86.
    9·1 answer
  • The relative atomic mass of an element is:
    11·1 answer
  • Molarity is a quantity in chemistry that has the unit of moles per liter (mol/l): if a sample of Chemical X consists of 32.22 mo
    12·1 answer
  • MgSO4 x 7H2O:
    7·2 answers
  • ¿Cuál es la diferencia entre energía térmica y energía eléctrica?
    6·1 answer
  • When convex mirrors are used for security purposes, the images they form
    9·1 answer
  • Plsssss give me answer<br>​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!