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
Lena [83]
2 years ago
13

I. Choose the letter of the correct answer. Write your answer on a separate sheet of paper.

Chemistry
1 answer:
omeli [17]2 years ago
6 0

Answer:

,,,

Explanation:

..

You might be interested in
What does multivalent mean???
salantis [7]
In the context of multivalent ions, it is when it has multiple oxidative states. 
4 0
3 years ago
A preliminary untested explanation that tries to explain how or why things happen in the manner observed is a scientific
icang [17]
It is a scientific hypothesis. A scientific hypothesis must be testable, however there is a significantly more grounded necessity that a testable speculation must meet before it can truly be viewed as logical. This foundation comes essentially from crafted by the rationalist of science Karl Popper, and is called "falsifiability".
3 0
3 years ago
Read 2 more answers
How many carbon atoms are in 7.05 moles of pyridine
NemiM [27]
First, it is best to know the chemical formula of pyridine which is C5H5N. To determine the number of carbon atoms present in pyridine, multiply 7.05 mol C5H5N with 5 mol C/ 1 mol C5H5N which then results to 35.35 mol of carbon. Then, multiply the answer to Avogadro's number which is 6.022x10^23 atoms. It is then calculated that the number of carbon atoms in 7.05 moles of pyridine is 2.12x10^25 atoms. 
5 0
3 years ago
Read 2 more answers
Which equation correctly defines Hooke's law?
den301095 [7]
I think it is the third one.
4 0
3 years ago
Read 2 more answers
In a hospital laboratory, a 10.0 mL sample of gastric juice (predominantly HCl), obtained several hours after a meal, was titrat
LiRa [457]

Answer: 1.14

Explanation:

HCl+NaOH\rightarrow NaCl+H_2O

To calculate the molarity of acid, we use the equation given by neutralization reaction:

n_1M_1V_1=n_2M_2V_2

where,

n_1,M_1\text{ and }V_1 are the n-factor, molarity and volume of acid which is HCl

are the n-factor, molarity and volume of base which is NaOH.

We are given:

n_1=1\\M_1=?\\V_1=10.0mL\\n_2=1\\M_2=0.1M\\V_2=7.2mL

Putting values in above equation, we get:

1\times M_1\times 10.0=1\times 0.1\times 7.2\\\\M_1=0.072M

To calculate pH of gastric juice:

molarity of H^+ = 0.072

pH=-log[H^+]

pH=-log(0.072)=1.14

Thus the pH of the gastric juice is 1.14

3 0
3 years ago
Other questions:
  • Why do ATP molecules store so much energy in their bonds?
    13·1 answer
  • A newly discovered unicellular organism isolated from acidic mine drainage is found to contain a cell wall, a plasma membrane, t
    12·1 answer
  • In the late 1 800s , experiments using cathode ray tubes led to the discovery of the
    13·1 answer
  • How many grams of H2 are needed to react with 47 grams of N2 to produce 200 grams of NH3?
    9·1 answer
  • How is gold related to suns life cycle?
    10·1 answer
  • Why is the renewable energy resource you chose is negative?
    7·1 answer
  • The molecule H2O can be correctly described as a?
    6·1 answer
  • Calculate the mass of hydrogen formed when 26.98 g of aluminum reacts with excess hydrochloric acid according to the following b
    14·1 answer
  • As NH4Cl dissolves in water, and cools the solution,
    6·1 answer
  • What characteristic of an element differs between isotopes?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!