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
tatyana61 [14]
3 years ago
10

Can anyone help with any of these questions :)

Chemistry
1 answer:
hoa [83]3 years ago
6 0

Answer: 1.D

2. A

3. D

Explanation:

You might be interested in
All fossils were formed from .
Kryger [21]

Answer: B) Bones

Explanation:

Natural casts form when flowing water removes all of the original bone or tissue, leaving just an impression in sediment.

5 0
4 years ago
Find the volume of an object that has a mass of 20g and density of 184 glcm
expeople1 [14]
Volume= Mass/ Density= 20/184
= 0.108 cubic cm
8 0
3 years ago
Identify the two types of radiation shown in the figure below. Explain your reasoning.
saul85 [17]

Answer:- \gamma and \alpha radiation.

Explanations:-  Alpha particle is helium nucleus with two protons and two neutrons and so it has +2 charge where as gamma is a form of light, so these are rays and not particles. Since these are rays, the charges for gamma rays is zero means they are neutral.

When alpha particles are passed through electromagnetic field they are repelled by the positive plate and attracted by the negative plate as there is an attraction between opposite charges. So, the line we see towards positive plat is representing an alpha particle radiation.

Since gamma rays are neutral, they are not deflected in electromagnetic field and go straight. So, the other line in the diagram is representing gamma rays radiation.

5 0
3 years ago
Read 2 more answers
Consider the following precipitation reaction (balanced). precipitation reaction: 2NH4Br(aq)+Pb(C2H3O2)2(aq)⟶2NH4C2H3O2(aq)+PbBr
sweet [91]

Answer:

Pb2+ (aq) & 2Br- (aq) --> PbBr2 (s).

Explanation:

Equation of the reaction:

Pb(C2H32O2)2 (aq) + 2 NH4Br (aq) --> 2NH4C2H3O2 (aq) + PbBr2 (s)

Ionic equation:

Pb+2(aq) + 2(C2H3O2)-1 (aq) + 2(NH4+) (aq) + 2Br-1 (aq) --> 2(NH4+) (aq) + 2(C2H3O2-) (aq) + PbBr2 (s)

2(NH4)+1(aq) & 2(C2H3O2)-1 (aq) cancel out from both sides, you are left with the net ionic equation :

Pb2+ (aq) & 2Br- (aq) --> PbBr2 (s).

6 0
3 years ago
Acid rain occurs when sulfur dioxide in the atmosphere is oxidized in the presence of nitrogen dioxide. Acid rain is an example
forsale [732]
Answer: B. A secondary pollutant

An acid rain is an example of a secondary pollutant because it is a chemical reaction of two gases namely, the sulfur dioxide and the nitrogen dioxide. The acid rain is not also directly emitted by the atmosphere. 

8 0
3 years ago
Read 2 more answers
Other questions:
  • Two humid streams are adiabatically mixed at 1 atm pressure to form a third stream. The first stream has a temperature of 40C, a
    8·1 answer
  • Which of the following is always true when a substance undergoes a physical change ?
    5·2 answers
  • As the temperature of a reaction is increased, the rate of the reaction increases because the . (A) reactant molecules collide m
    14·1 answer
  • In another process in which 235 92U undergoes neutron bombardment, the following reaction occurs: 235 92U+10n→AZSr+143 54Xe+310n
    8·1 answer
  • The difference between the transmissivity of shortwave insolation and longwave terrestrial radiation by various atmospheric gase
    8·1 answer
  • Question 19 of 26
    9·1 answer
  • Which of the following is true for a reliable scientific source
    15·2 answers
  • Lab: Limiting Reactant and Percent Yield
    5·1 answer
  • What is the total number of atoms in 3.0 grams sample of neon?
    12·1 answer
  • When KCL dissolved in ethanol, what is the intermolecular attraction between K+ ions and ethanol molecules?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!