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
Kobotan [32]
4 years ago
9

Which element is classified as an alkali metal?

Chemistry
1 answer:
Delvig [45]4 years ago
8 0

Answer: The alkali metals consist of the chemical elements lithium (Li), sodium (Na), potassium (K),[note 1] rubidium (Rb), caesium (Cs),[note 2] and francium (Fr).

Explanation:

You might be interested in
The weight of the body decrease inside water why?​
Lady_Fox [76]

Penurunan atau kehilangan massa otot bisa menimbulkan penurunan berat badan yang tidak direncanakan

3 0
3 years ago
When copper is changed to copper(II) nitrate by the nitric acid, it is an example of a(n) ______-_______ reaction. (two words, i
Nataly_w [17]

Answer:

oxidation- reduction

Explanation:

where gaining electronic reduces one element and losing them oxidize the other nitric acid is not only strong it is also a oxidizing agent

<h2>Oxidize: copper = Cu+2</h2>
5 0
3 years ago
A gas has a volume of 3L at 200 kPa. What will its volume be if the pressure is changed to 500 kPa?
marta [7]

Answer:

6L

Explanation:

<em>if it's 3L per 200kPa</em>

then it would be;

4L per 300kPa

5L per 400kPa

6L per 500kPa

that's how i'd work it out in my head, hope it helps, but not sure though!

5 0
3 years ago
Okghhjhyuknji<br>Hdhdnsbdhjsms dnddms dnjdke
VikaD [51]

Answer:

thanks for the points

take care bye

6 0
2 years ago
Drinking water may contain a low concentration of lead ion (Pb2 ) due to corrosion of old lead pipes. The EPA has determined tha
Lynna [10]

Answer:

3.861x10⁻⁹ mol Pb⁺²

Explanation:

We can <u>define ppm as mg of Pb²⁺ per liter of water</u>.

We<u> calculate the mass of lead ion in 100 mL of water</u>:

  • 100.0 mL ⇒ 100.0 / 1000 = 0.100 L
  • 0.100 L * 0.0080 ppm = 8x10⁻⁴ mg Pb⁺²

Now we <u>convert mass of lead to moles</u>, using its molar mass:

  • 8x10⁻⁴ mg ⇒ 8x10⁻⁴ / 1000 = 8x10⁻⁷ g
  • 8x10⁻⁷ g Pb²⁺ ÷ 207.2 g/mol = 3.861x10⁻⁹ mol Pb⁺²
4 0
3 years ago
Other questions:
  • Even though the phone is ringing no sound comes out of the jar what does this tell you about the space inside the jar
    6·1 answer
  •  The Mississippians were considered to be horticulturalists, which means they were
    7·1 answer
  • Consider a solution which is 0.10M in CH3COOH and 0.20M in NaCH3COO. Choose ALL of the following that are true. If Ca(CH3COO)2 i
    10·2 answers
  • How many grams are in 8.2 x 1022 molecules of N216?
    13·1 answer
  • Uestion 1
    7·1 answer
  • How does thermal energy transfer when a room is heated by a furnace?
    5·1 answer
  • Solids can often diffuse into a liquid but a solid cannot diffuse into another child
    5·1 answer
  • PLEASE ANSWER !!!
    15·2 answers
  • The coriolis effect happen when
    6·1 answer
  • How many moles of chlorine could be produced by decomposing 157g NaCl? 2NaCl --&gt; 2Na+Cl2
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!