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
puteri [66]
3 years ago
14

I'll mark brainliest if you can answer this quick and correctly only correct cause i don't accept bad answers or i'll report you

if i get a bad grade
'

Chemistry
1 answer:
bija089 [108]3 years ago
8 0
3) A
4) C
brainliest ?
You might be interested in
Based on the equations below, which metal is the least active? Pb(NO3)2(aq) + Ni (s) --> Ni(NO3)2 (aq)+ Pb(s) Pb(NO3)2(aq) +
viva [34]

Answer:

Ni

Explanation:

An active metal is a highly reactive metal. Active metals are found high up in the activity series.

Active metals react with other metals that are lower than them in the activity thereby displacing the lower metals from a solution of their salts. This is what may have happened in the other two reactions.

Ni is the most active metal listed in the question since it can react a compounds with Pb(NO3)2(aq) to liberate Pb metal.

6 0
2 years ago
Which of the following conditions will ensure that a chemical reaction will definitely proceed in the forward direction, toward
Grace [21]

Answer:

When ΔS > ΔH/ T, then the reaction will proceed forward

Explanation:

  • The entity that determines the whether a reaction will occur on its own in the forward direction (Spontaneity or Feasibility) is Gibb's free energy.
  • Gibb's free energy is the energy available to do work. It is denoted as 'G'. It cannot be easily measured. The change (ΔG) can only be measured.  ΔG = ΔH - TΔS

when ΔG is positive, The reaction is not spontaneous (reaction will not occur on its own)

When ΔG is negative, The reaction is spontaneous (reaction will occur on its own)

When ΔG is zero, the reaction is in equilibrium

Option A and E are not correct. ΔH (Enthalpy) cannot determine spontaneity

Option C and D cannot alone determine spontaneity of reaction

For reaction to be spontaneous, TΔS > ΔH

Therefore, ΔS > ΔH/T

4 0
3 years ago
1) How does the oxpecker benefit?
Bezzdna [24]

Explanation:

1)

Oxpeckers are a type of small bird that land on zebras and eat ticks and other parasites that live on the zebra's skin. The oxpeckers get food and the zebras get pest control. ... Tapeworms get food by eating the host's partly digested food, depriving the host of nutrients.

2)i. Fast Speed. Basically, we can process data that is stored in HDFS at lightning-fast speed with traditional SQL knowledge, by using Impala.

ii. No need to Move Data. ...

iii. Easy Access. ...

iv. Short Procedure. ...

v. File Format. ...

vi. Big Data. ...

vii. Relational model. ...

viii. Languages.

3) A parasite is an organism that lives on or in a host organism and gets its food from or at the expense of its host. There are three main classes of parasites that can cause disease in humans: protozoa, helminths, and ectoparasites.

In the Internet, a hostname is a domain name assigned to a host computer. ... For example, en.wikipedia.org consists of a local hostname (en) and the domain name wikipedia.org. This kind of hostname is translated into an IP address via the local hosts file, or the Domain Name System (DNS) resolver.

4) Usually, although parasites harm their hosts, it is in the parasite's best interest not to kill the host, because it relies on the host's body and body functions, such as digestion or blood circulation, to live. Some parasitic animals attack plants.

5)The pollen sticks to the hummingbird and as the hummingbird goes to another cardinal flower for food the pollen is spread. This would qualify as a mutual relationship because both of the organisms benefit from the relationship. ... These two organisms have a relationship that is known as mutualism.

6)According to Campbell, moose populations are highest in areas 40 years after a major wildfire. But habitat loss is not the only probable cause of moose decline. Tiny ticks also could be a big problem. ... Without deep snow, then predators like wolves and mountain lions have an advantage over moose.”

Deforestation Led to Decline

The reasons why wolves have seen their population decimated mainly due to the diminishing forests in North America, where many of the wolves are found. Wolves were able to live in and survive in such an environment.

5 0
2 years ago
What causes the recognition of an element from its energy signature?
Helga [31]

Answer:

I'm so sorry if this is wrong but I think its B

8 0
3 years ago
Express your answer as a balanced chemical equation. Identify all of the phases in your answer.
SpyIntel [72]

Answer:

H₂S(aq)+ 2 LiOH(aq) → Li₂S(aq) + 2 H₂O(l)

6 HI(aq) + 2 Al(s) → 2 AlI₃(aq) + 3 H₂(g)

2 H₂SO₄(aq) + TiO₂(s) → Ti(SO₄)₂(aq) + 2 H₂O(l)

H₂CO₃(aq) + 2 LiOH(aq) → Li₂CO₃(aq) + 2 H₂O(l)

Explanation:

H₂S(aq)+ 2 LiOH(aq) → Li₂S(aq) + 2 H₂O(l)

This is a neutralization reaction. The products are salt and water.

6 HI(aq) + 2 Al(s) → 2 AlI₃(aq) + 3 H₂(g)

This is a single displacement reaction.

2 H₂SO₄(aq) + TiO₂(s) → Ti(SO₄)₂(aq) + 2 H₂O(l)

This is a neutralization reaction. The products are salt and water.

H₂CO₃(aq) + 2 LiOH(aq) → Li₂CO₃(aq) + 2 H₂O(l)

This is a neutralization reaction. The products are salt and water.

5 0
3 years ago
Other questions:
  • Bromine is less electronegative than chlorine, yet methyl bromide and methyl chloride have very similar dipole moments. why? sel
    9·1 answer
  • Why do scientists measure and record mass instead of weight
    13·2 answers
  • Which of the following electron configurations describes an element that is a noble gas?
    5·2 answers
  • What two waste products the body must eliminate?
    5·1 answer
  • In the science lab, Sika combines two substances and determines that a chemical change has taken place. What
    14·1 answer
  • How are greenhouse gases like carbon dioxide and methane different from other atmospheric gases like nitrogen and oxygen?
    15·1 answer
  • What type of bonds do inorganic compound make
    11·1 answer
  • In the following neutralization reaction, which substance is the acid?
    8·1 answer
  • Which characteristic influences the polarity of these molecules?
    8·1 answer
  • What is the best way to<br> determine which brand of<br> paper towel is the<br> strongest when wet?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!