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
avanturin [10]
3 years ago
8

Can you help me with 2 and 3 please

Chemistry
1 answer:
Citrus2011 [14]3 years ago
5 0
Bacteria --> corn --> mouse --> hawk

You might be interested in
Na2CO3(aq)+2HCl(aq)→2NaCl(aq)+H2O(l)+CO2(g) A student combined two colorless aqueous solutions. One of the solutions contained N
Scrat [10]

Answer: Bubbles formed would be evidence that a chemical reaction took place when the solutions were combined.

Explanation:

As it is given that both Na_{2}CO_{3} and HCl chemically combine together leading to the formation of NaCl, water and carbon dioxide gas. As the gas is forming and its formation will also form bubbles into the solution.

This formation of bubbles actually indicate that a chemical reaction has taken place. As molecules of a gas are held by Vander waal forces so, this gas will readily escape into the atmosphere.

Thus, we can conclude that bubbles formed would be evidence that a chemical reaction took place when the solutions were combined.

7 0
3 years ago
Identify each description as either a physical or chemical change.
Anettt [7]

Answer:

1 - physical

2 -chemical

3 - chemical

4 - physical

5 - physical

6 - chemical

7 - physical

8 - chemical

4 0
3 years ago
How do the bonds within AND between a water molecule affect the properties of water?
Anuta_ua [19.1K]
Water is a polar molecule, meaning the covalent bonds in it share electrons unequally. They spend more time around the oxygen, making it positive and the hydrogens negative. This helps water stick to surfaces, a property called adhesion. The hydrogens of one molecule are also attracted to the oxygens of another. This is called cohesion, and it helps water form droplets
8 0
3 years ago
A 25. 0-ml sample of 0. 150 m hydrocyanic acid is titrated with a 0. 150 m naoh solution. What is the ph beforeany base is added
Ray Of Light [21]

Answer:

stars,auroras,a neon sign

Explanation:

just did it

4 0
2 years ago
PLEASEE ANSWERRR FASTTT
IceJOKER [234]

Answer:

last one

Explanation:

The elements classified as metalloids are boron, silicon, germanium, arsenic, antimony, tellurium, and polonium.

8 0
3 years ago
Read 2 more answers
Other questions:
  • A certain block is floating in water with 77% of itself submerged. It has a length of 4.3 cm, a width of 5.9 cm, and a height of
    11·1 answer
  • 78PTS! PLEASE HELP ASAP!
    14·1 answer
  • Which is not a characteristic of true solutions? 1. exists in only a single phase 2. homogeneous 3. passes through a filter 4. s
    9·2 answers
  • A sample of ammonia gas was allowed to come to equilibrium at 400 K. 2NH3(g) <----> N2(g) 3H2(g) At equilibrium, it was fo
    9·1 answer
  • What are the exceptions to the periodic trends in ionization energy?
    8·1 answer
  • Question 3 (1 point)
    5·1 answer
  • F(x) = x3 + ax2 + bx + c
    5·1 answer
  • What is the similarity between man and woman​
    7·2 answers
  • 4. Chemical energy is the energy stored in a
    5·1 answer
  • What is the general structure of a hydroxamic acid?.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!