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
mr Goodwill [35]
3 years ago
7

What is a hypothesis?

Chemistry
2 answers:
raketka [301]3 years ago
5 0
An explanation or answer based on the facts or evidence you have.
DerKrebs [107]3 years ago
5 0

Answer:

a possible explanation or answer to a scientific question that is based on prior knowledge or research and is testable

You might be interested in
Which statement describes what happens to the DNA in the process shown? A. Some of the DNA is destroyed, so each daughter cell h
kolbaska11 [484]

hhjjjbvhjbvb

hhmkn

hjkk

hhjj

7 0
3 years ago
in an experiment magnesium ribbon was heated in air the product formed was found heavier than original ribbon.potassium manganat
AlladinOne [14]

Answer:

1: due to difference in reactivity and melting point

2 during the reaction both combine with oxygen in this case magnesium remain solid but some potassium vaporise

5 0
3 years ago
What do oxygen, silicon, and selenium have in common? How might this relate to their organization on the periodic table?
Sonbull [250]

Answer:

They all belong to the p block in the periodic table

Explanation:

Let us examine the electronic configuration of each element;

Oxygen - [He] 2s2 2p4

Silicon - [Ne] 3s2 3p2

Selenium - [Ar] 4s2 3d10 4p4

A common thread that joins all the elements listed above is that they all belong to the p-block in the periodic table. They could be collectively referred to as p-block elements.

8 0
3 years ago
Samples of each of the following objects are removed from a 60º C water bath, in which they have been for enough time to reach t
Brut [27]

Answer:

concrete

2kj for second question

Explanation:

it's gotta be because... let me get back on it.

4 0
3 years ago
Phosphate buffers are commonly used in biological research. If a small amount of strong acid is added to a buffer solution that
lozanna [386]

Answer:

A) [H3PO4] will increase, [KH2PO4] will decrease, and pH will slightly decrease.

Explanation:

A buffer is a solution which resists changes to its pH when a small amount of acid or base is added to it.

Buffers consist of a weak acid (HA) and its conjugate base (A–) or a weak base and its conjugate acid. Weak acids and bases do not completely dissociate in water, and instead exist in solution as an equilibrium of dissociated and undissociated species. When a small quantity of a strong acid is added to a buffer solution, the conjugate base, A-, reacts with the hydrogen ions from the added acid to form the weak acid and a salt thereby removing the extra hydrogen ions from the solution and keeping the pH of the solution fairly constant. On the other hand, if a small quantity of a strong base is added to the buffer solution, the weak acid dissociates further to release hydrogen ions which then react with the hydroxide ions of the added base to form water and the conjugate base.

For example, if a small amount of strong acid is added to a buffer solution that is 0.700 M H3PO4 and 0.700 M KH2PO4, the following reaction is obtained:

KH₂PO₄ + H+ ----> K+ + H₃PO₄

Therefore, [H₃PO₄] will increase, [KH₂PO₄] will decrease, and pH will slightly decrease.:

4 0
3 years ago
Other questions:
  • How many total atoms are in 0.290 g of P2O5?
    9·1 answer
  • Round off the following to three significant figures 0.032000000cg
    9·1 answer
  • How many grams of KCIO3 will be formed from 3.58g of KCI
    6·1 answer
  • Which equilibrium system has HCO3- acting as a Brønsted-Lowry base?
    5·1 answer
  • Name: _________________ Temperature o fwater_25_degreecent.YOU MUST SHOW ALL CALCULATIONS TO RECEIVE CREDIT FOR THEM! DATA ANALY
    5·1 answer
  • What is the mass of 3.15 moles of calcium sulfate, CaSO4?
    13·1 answer
  • #12, how do I solve this
    9·1 answer
  • Which of the following is NOT a property of acids?
    12·2 answers
  • A block made of a certain material has a thickness of 20 cm and a thermal conductivity of 0.04 m C. At a particular instant in t
    7·1 answer
  • Which of the following is an example of a molecule with different atoms?
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!