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
AleksAgata [21]
2 years ago
10

PLs help mweee Ill mark brainliest

Chemistry
1 answer:
Arturiano [62]2 years ago
7 0

the 3rd one is the answer

You might be interested in
One type of electromagnetic radiation that could harm humans
Vladimir79 [104]
Ultraviolet Rays ( UV rays) can harm humans because they can cause sunburn, and skin cance if you stay out in the sun for too long.
3 0
2 years ago
Sheena has a lump of sodium, a lump of potassium and a lump of lithium, but they’ve got mixed up and she doesn’t know which one
Arada [10]

Answer:

Explanation:

Just saw your request regarding answering this so here it is:

All of them belong of Group 1 in periodic table and thus are highly reactive! Pattern of reactivity for Group 1 (Alkali metals) increases as you move down the group as their radius keeps increasing and thus electrons can be easily lost. Thus, to ID the lumps, Sheena should look at their reactivity and she should get the following trend:

Most reactive: Potassium (K)

Intermediate: Sodium (Na)

Least reactive: Lithium (Li)

Hope it helps!

5 0
3 years ago
How many moles are there in 5.699 liters of neon gas at STP? Express your answer with the appropriate significant figures and un
Svetradugi [14.3K]

Answer:

The number of moles: 0.25442 moles

Explanation:

One mole of Neon gas will occupy 22.4 at STP.

5.699L consists of \frac{5.699}{22.4} = 0.25442 moles.

4 0
2 years ago
-3 × 4=? ....................​
blagie [28]

Answer:

-12

Explanation:

a negative times a positive is negative

8 0
3 years ago
Read 2 more answers
A chemistry student measures out 41 grams of sodium hydroxide, NaOH. They react it with an excess of hydrochloric acid, HCl, for
exis [7]
The answer will be around 687.928 grams
8 0
3 years ago
Other questions:
  • A sample of a hydrocarbon contains 20.75 g C and 4.25 g H. Its molar mass is 58.04 g/mol. What is its empirical formula C2H5 CH2
    8·2 answers
  • A prototype is usually different from the final product
    12·1 answer
  • What is the balanced equation for solid ammonium nitrate (NH4NO3) decomposes explosively to form nitrogen gas, oxygen gas, and w
    12·1 answer
  • How would the freezing point of seawater compare with that of pure water?
    5·2 answers
  • Combustion of hydrocarbons such as butane () produces carbon dioxide, a "greenhouse gas." Greenhouse gases in the Earth's atmosp
    9·1 answer
  • Write down the steps which correctly describe the steps required to decide whether or not a precipitate forms when two aqueous s
    11·1 answer
  • 9. What type of bond is pictured in the image below?
    14·1 answer
  • Which of these is an advantage of shade-grown coffee beans?
    8·1 answer
  • To make a softball bat, a block of wood is carefully crafted into a shape that will allow a
    12·1 answer
  • The solar system is the collective name for the sun, eight planets, and their moons. The
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!