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
Troyanec [42]
3 years ago
10

HELP PLZZZZ plz A PLZ plz

Chemistry
1 answer:
natta225 [31]3 years ago
3 0
It got its layer from over time from wind and dust and buildup of dirt
You might be interested in
Please help me answser this, its a photo<br><br>o element<br>o subscribe<br>o coefficient
Oliga [24]

Answer:

3 atoms of (C)carbon, 5 atoms of (H)hydrogen and 2 atoms of (O)oxygen

Explanation:

i don't know what you mean by subscribe

and i don't know what a coefficient is

4 0
3 years ago
Phuong trinh phan ung ohc cho +02
scZoUnD [109]

Answer:

yes

hope this helps!!!!

5 0
3 years ago
The combustion of 1 mole of CO according to the reaction CO(g) + ½O2(g) → CO2(g) + 67.6 kcal gives off how much heat?
Tomtit [17]
When the enthalpy value is given, we can calculate how much heat is use or produces in a given equation. 

67.6 kCal ---> 67.6 kCal= 1 mol of reaction
1 mol of reaction=  1 mol of CO (based on the coefficient)

so 1 mole of CO gives us 67.6 kCal of heat.

calculation:

1 mol CO\frac{67.5 kcal}{1 mol CO} = 67.5 kcal




5 0
3 years ago
What must be true for a substance to be able to dissolve in water?
JulsSmile [24]
B. i think not 100% sure 
6 0
3 years ago
In an acid-base titration, a base or acid is gradually added to the other until they have completely neutralized each other. Sin
Xelga [282]

Answer:

1/10 or 0.1

Explanation:

Quantities at which equivalence can be obtained are:

           

95, 96, 97, 98, 99, 100, 101, 102, 103, 104

Number of quantities = N = 10

Probability that the equivalency is obtained exactly at 100 mL can be calculated as follows:

P(X = 100) =  (Number of favourable outcomes) / (Total Number of Outcomes)

P(X = 100) = 1/10

P(X = 100) = 0.1

5 0
3 years ago
Other questions:
  • He following balanced equation shows the formation of water. 2H2 + O2 mc020-1.jpg 2H2O How many moles of oxygen (O2) are require
    6·2 answers
  • The ostwald process is used commercially to produce nitric acid, which is, in turn, used in many modern chemical processes. in t
    13·2 answers
  • Is cough syrup compound or a mixture?
    12·2 answers
  • How many moles are there in 140.2 g of Ca
    10·2 answers
  • Which of the following could be the subsh
    13·1 answer
  • A student has a solid block of steel and a solid plastic block of the same size.
    6·1 answer
  • What is an atomic mass unit?​
    6·2 answers
  • Describe a covalent bond?
    15·1 answer
  • Question 13 of 25
    12·1 answer
  • Which set of statements best explains the relationship between the parts of the respiratory system?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!