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
Ugo [173]
3 years ago
6

An electrically neutral atom consists of 15 neutrons, 13 electrons, and a number

Chemistry
1 answer:
Anna71 [15]3 years ago
5 0

Answer:c

Explanation: it states that the atom is neutral, meaning the number of electrons and protons are the same. so if there are 13 electrons, there are 13 protons. And the mass number is neutrons plus protons. So 13+15 is 28

You might be interested in
How do we determine the number of electrons in a neutral atom?
Elodia [21]

this is the answer of your question .

<em>Hope</em><em> </em><em>it</em><em> </em><em>helped </em><em>you</em>

3 0
2 years ago
A volume of 90.0 mL of aqueous potassium hydroxide (KOH) was titrated against a standard solution of sulfuric acid (H2SO4). What
Gemiola [76]

Answer:

The answer to your question:  0.7 M

Explanation:

Data

V of KOH = 90 ml

[KOH] = ?

V H2SO4 = 21.2 ml

[H2SO4] = 1.5 M

                       2KOH(aq)  +  H₂SO₄(aq)   →   K₂SO₄(aq)  +  2H₂O(l)

Molarity = moles / volume

moles of H₂SO₄ = (1.5) (21.2)

                           = 31.8

                    2 moles of KOH --------------  1 mol of H₂SO₄

                   x                           --------------  31.8 mol of H₂SO₄

                    x = (31.8)(2) / 1

                    x = 63.8 moles of KOH

Molarity = 63.8 / 90

             = 0.7 M

7 0
2 years ago
What is the economic importance of phosphorus in Canada or elsewhere in the world?
vladimir1956 [14]

white phosphorus is used in flares and explosives, so may be important in warfare, etc. Red phosphorus is used in matches (side of matches) and in fertilizers which are essential to growing plants. I don't know if that is economically important, but there are many ways that phosphorus benifit the economy. One downside on the economy is that phosphorus is one of the main ingredients in meth, which of course causes trouble for the economy ( law enforcement, medical, etc. )

6 0
3 years ago
On a phrase diagram or heating curve, the freezing point is the same as what ?
yuradex [85]

Answer:

Pelting point.

Explanation:

Freezing point is the same is the melting point.

8 0
3 years ago
the elements silicon (atomic number 14) and chlorine (atomic number 17) are both in period 3 of the periodic table. which is mor
Oliga [24]
Chlorine is highly reactive than Silicon. 
7 0
3 years ago
Read 2 more answers
Other questions:
  • How might scientific knowledge about monoculture farming affect societal decisions? Please be sure to answer in complete sentenc
    7·2 answers
  • How much energy is required to convert 15.0 g of ice at −106 °C to water vapor at 125 °C? Specific heats are 2.09 J/g K for both
    7·1 answer
  • Think of a situation where "particle motion" is a blessing in disguise for the entire humanity.
    15·1 answer
  • Write a balanced net ionic equation for the reaction of aqueous solutions of baking soda (NaHCO3) and acetic acid.(A) HCO3–(aq)
    15·1 answer
  • one bottle of aspirin holds 250 tablets, each containing 150 mg of aspirin and sells for $2.95. Another bottle holds 125 tablets
    7·1 answer
  • What is the minimum number of significant digits in 828,000,000
    14·1 answer
  • a balloon has 0.3 moles of air inside and a volume of 7 liters after 0.2 more moles of air were blown into this balloon what is
    5·1 answer
  • When heat energy is added, two changes are observed: change A: solid changes to a liquid. Change B: Solid changes directly to a
    15·1 answer
  • ASAP please
    8·1 answer
  • A loaf of bread has a green substance growing on each slice. Which of the following types of spoilage could have occurred?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!