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
pshichka [43]
3 years ago
11

Which of the following is true about the elements on the Periodic Table? There may be 1 or more correct answers.

Chemistry
1 answer:
nlexa [21]3 years ago
4 0

Answer: 1. Block

2. True ( I'm unsure. He arranged it according to mass, but he is credited for the periodic table)

3. Noble gasses

4. technetium

5. Alkaline earth metals

6. Number of protons

7. False

8. Not true: generally decreases as atomic number increases within a period

9. Argon

10. Four

11. False

12. False

Explanation:

You might be interested in
Balance the following equation.<br> C3H8(g) + O2(g) → CO2(g) + H2O(l)
Arte-miy333 [17]

Explanation:

C3H8+5O2----->3CO2+4H2O

8 0
3 years ago
HELP WHOEVER ANSWERS WILL BE MARKED BRAINLIEST
Vika [28.1K]
1) T
2) F- the heart pumps blood
3) T
4) F- atria and ventricles
5) T
6) T
7) T
8) T
9) F- your heart rate goes down but doesn't stop
10) T

1) D
2) B
3) A
4) E
5)C
7 0
2 years ago
What is the difference between hypertonic and hypotonic
Bess [88]
Answer: A solution will be hypertonic to a cell if its solute concentration is higher than that inside the cell, and the solutes cannot cross the membrane. If a cell is placed in a hypotonic solution, there will be a net flow of water into the cell, and the cell will gain volume.

Picture:
Meaning of hypertonic: (1): having a higher osmotic pressure than a particular fluid, typically a body fluid or intracellular fluid. (2) of or in a state of abnormally high muscle tone.

5 0
2 years ago
When the ph of the extracellular fluid drops, the kidneys
Ipatiy [6.2K]
The answer is D) Secrete more hydrogen ions and more bicarbonate ions.
5 0
3 years ago
A gas cylinder initially contains 463 L of gas at a pressure of 159 atm. If the final volume of gas is 817 L, what is the final
Agata [3.3K]

Answer:

The final pressure is 90.1 atm.

Explanation:

Assuming constant temperature, we can solve this problem by using <em>Boyle's Law</em>, which states:

  • P₁V₁=P₂V₂

Where in this case:

  • P₁ = 159 atm
  • V₁ = 463 L
  • P₂ = ?
  • V₂ = 817 L

We <u>input the given data</u>:

  • 159 atm * 463 L = P₂ * 817 L

And <u>solve for P₂</u>:

  • P₂ = 90.1 atm

The final pressure is 90.1 atm.

6 0
3 years ago
Other questions:
  • What method of separation would work best on a homogeneous mixture salt water? Select all that apply. filtration distillation ev
    7·2 answers
  • How many neutrons are in cesium-135 (135/55Cs)
    6·1 answer
  • If a shell can hold a maximum of 32 electrons what is the value of n?
    13·1 answer
  • An opened carbonated drink is an example of what type of solution?
    7·2 answers
  • Charlie measures the mass of a metal three times and recorded 8.83 g,
    12·1 answer
  • Which of the following is correctly balanced redox half reaction? Group of answer choices A. 14H+ + 9e- + Cr2O72- ⟶ Cr3+ + 7H2O
    13·1 answer
  • Is a seed a living thing?why
    12·2 answers
  • Is it possible to identify something as an element, compound or pure substance
    15·1 answer
  • What volume of 0.30 mol/L H2SO4(aq) is required to neutralize 50.0 mL of 0.60 mol/L NaOH (aq) ?
    5·1 answer
  • Place the following in order of decreasing radius.<br><br> Te2- F- O2-
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!