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
Effectus [21]
3 years ago
13

Which is an advantage of using chemical indicators ?

Chemistry
2 answers:
Ne4ueva [31]3 years ago
6 0

They are inexpensive to use, A

LiRa [457]3 years ago
3 0
Hard to find out do to chemical change

You might be interested in
Find the element that makes plumbing pipes. is it a metal nonmetal or metalloid
evablogger [386]
Assuming the plumbing pipe is PVC, the answer would be nonmetal

PVC or polyvinyl chloride has a chemical formula of (C2H3Cl)n. From the element, we can see that the polyvinyl chloride is made from carbon, hydrogen, and chloride. There are no elements that belong to the metal group or metalloid group, so the plumbing pipe would be nonmetal. 
6 0
3 years ago
Read 2 more answers
In this equation, stands for carbon, stands for nitrogen, and stands for oxygen. Which equation represents this reaction?
Marat540 [252]
In order to answer this question we must look at the image which I have attached.

The red atoms refer to oxygen atoms, the grey atoms are carbon atoms and the blue atoms are nitrogen. Therefore, the equation from the image suggests:

2CO + 2NO → 2CO₂ + N₂

Looking closely at the options given, several of them could be eliminated immediately since they are not balanced equations like B, C and E. Therefore, only A or D could be the answers.

The answer is option <span>D.) 2CO + 2NO → 2CO2 + N2
</span>

3 0
4 years ago
Read 2 more answers
Without constants you would not know which variable affected the
bonufazy [111]
Two independent variables could change at the same time, and you would not know which variable affected the dependent variable
4 0
3 years ago
Match each of the following elements to its configuration for the highest energy electrons
Nat2105 [25]

Answer:

Potassium = 4s¹

Carbon = 2p²

Sulfur =  3p⁴

Barium =  6s²

Xenon = 5p⁶

Explanation:

1) Potassium is present in group one.

Its electronic configuration is:

K = [Ar]  4s¹

So its highest energy electrons are 4s¹.

2) Carbon is present in group 14.

Its electronic configuration is:

C = [He]  2s² 2p²

So its highest energy electrons are 2p².

3) Sulfur is present in group 16.

Its electronic configuration is:

S = [Ar]  3s² 3p⁴

So its highest energy electrons are 3p⁴.

4) Barium is present in group 2.

Its electronic configuration is:

Ba = [Xe]  6s²

So its highest energy electrons are 6s² .

5) Xenon is present in group 18.

Its electronic configuration is:

Xe= [Kr]  4d¹⁰ 5s² 5p⁶

So its highest energy electrons are 5p⁶

5 0
4 years ago
1. How many moles of nitrogen monoxide can be made using 5.0 moles of oxygen in the following composition reaction?
Viktor [21]

Answer:

1)  10.0 moles of NO

2) 25 moles of NaCl

3) 1200 moles of CO2

1. How many moles of nitrogen monoxide can be made using 5.0 moles of oxygen in the following composition reaction?

N2 + O2 → 2NO

For 1 mol N2 we need 1 mol O2 to produce 2 moles of NO

For 5.0 moles of N2 we need 5.0 moles of O2 to produce 10.0 moles of NO

2. The neutralization of an acid with a base is a double replacement reaction in which a salt and water are formed. If you start with 25 moles of HCl and neutralize it with  NaOH how many moles of NaCl will be formed?

HCl + NaOH → NaCl + H2O

For 1 mol HCl we need 1 mol NaOH to produce 1 mol of NaCl and 1 mol H2O

For 25 moles of HCl we need 25 moles of NaOH to produce 25 moles of NaCl and 25 moles of H2O

3. A car burns gasoline (octane – C8H18) with oxygen. If you drive to Salt Lake and  burn 150 moles of octane how many moles of carbon dioxide are you producing?

2C8H18 + 25O2 → 16CO2 + 18H2O

For 2 moles of octane we need 25 moles of O2 to produce 16 moles of CO2 and 18 moles of H2O

For 150 moles of octane we need 25*75 = 1875 moles of O2

To produce 16*75 = 1200 moles of CO2 and 18*75= 1350 moles

Explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • To neutralize 1.65g LiOH, how much .150 M HCl would be needed?
    15·1 answer
  • A solution has a pH of 13. What is the pOH?
    7·1 answer
  • The ph of a solution that contains 0.818 m acetic acid (ka = 1.76 x 10-5) and 0.172 m sodium acetate is __________.
    11·1 answer
  • How many mols of calcium chloride can be produced if you begin with 6.55 mL of 0.62 M HCl and 7.54 grams of calcium carbonate? R
    13·1 answer
  • Which one of the following statements about mixtures is correct [2] [3] The different substances in a mixture are always in a de
    14·1 answer
  • The mass number of Bromine-81 is
    12·1 answer
  • Un convertidor catalítico acelera la reacción del monóxido de carbono con oxígeno para producir dióxido de carbono. ¿De qué mane
    12·1 answer
  • I NEED HELP ASAP, If you help me I’ll give you Brainlist [Calorimetry and specific heat lab]
    5·2 answers
  • Question 2
    14·1 answer
  • Complete the sentence using ide, ate or Ic. To determine the name of an anion, you take the name of its element and replace the
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!