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
natka813 [3]
2 years ago
10

Question 1 of 7

Chemistry
2 answers:
Nata [24]2 years ago
8 0

Answer:

b

Explanation:

nlexa [21]2 years ago
3 0

Answer:

Explanation:B ice melting is a phiyscal change and the mass of the substance remains the same

You might be interested in
Which metal will react spontaneously with Cu2+ (aq) at 25°C?
Gwar [14]

Answer:

Mg  

Explanation:

The standard reduction potentials are

                                              <u>E°/V </u>

Au³⁺(aq ) + 3e⁻  ⟶  Au(s);     1.42

Hg²⁺(aq)  + 2e⁻  ⟶  Hg(l);     0.85

Ag⁺(aq)    +   e⁻  ⟶  Ag(s);    0.80

Cu²⁺(aq)   + 2e⁻ ⟶  Cu(s);   0.34

Mg2+(aq) + 2e- ⟶  Mg(s);   -2.38

The more negative the standard reduction potential, the stronger the metal is as a reducing agent.

Mg is the only metal with a standard reduction potential lower than that of Cu, so

Only Mg will react spontaneously with Cu²⁺.

 

5 0
3 years ago
Read 2 more answers
When doing a titration what is the equivalency point of the neutralization reaction?
KengaRu [80]
The equivalency point is at the point of the titration where the amount of titrant added neutralize the solution. When it’s a strong acid strong base titration, the equivalence point will be 7. When it is a weak acid strong base, the equivalence point it more basic (the exact number depends on what acid and base you use). And when it is a strong acid weak base, the equivalence number is more acid (the exact number depends on what acid and base you use). Hope this helps!
3 0
3 years ago
. Hemoglobin (Hb) and oxygen gas form a complex (HbO2) that carries oxygen throughout the human body. Unfortunately, carbon mono
sp2606 [1]

Answer:

1. Removing them to an area of fresh air. This helps to prevents further poisoning by the carbon monoxide and increase the amount of oxygen entering into the body. This will help to reduce the concentration of carbon monoxide binding oxygen

2. Administering pure oxygen goes a long way to enhance ventilation and increase the oxygen saturation to 100%. This will help to overcome the effect of the carbon monoxide and promote more hemoglobin binding

5 0
3 years ago
How do mutations affect a species ability to survive and reproduce? Justify your response in two or more complete sentences.
olga nikolaevna [1]
Mutation affect a species ability to survive and reproduce. Mutations can expand the life span of a species by keeping them hidden from predators which would also increase reproduction. If exposed to other wildlife, those numbers could decrease.
3 0
3 years ago
Read 2 more answers
It is easier to determine the electron configurations for the p-block elements in periods 1, 2, and 3 than to determine the elec
andreyandreev [35.5K]

Answer:

See Explanation

Explanation:

Because you have to get through the d-block electron configurations for the rest of the p-block elements which is a hassle to do. You need to know how to account for electron stability, from which subshell to remove electrons, etc. because it is all weird for d-block.

8 0
2 years ago
Other questions:
  • which of these species is most likely to be a lewis acid and is also least likely to be a bronsted acid
    10·1 answer
  • If an atom has 35 protons in the nucleus, how many will it have orbiting nucleus
    15·1 answer
  • What is the balanced equation for solid ammonium nitrate (NH4NO3) decomposes explosively to form nitrogen gas, oxygen gas, and w
    12·1 answer
  • Glycogen ________. Glycogen ________. forms the regulatory molecules known as enzymes serves as a structural component of human
    7·1 answer
  • Describe the composition of a lead storage battery
    9·1 answer
  • Explain why a sodium atom and a chlorine atom undergo an iconic bond?
    8·1 answer
  • Which statement best describes London dispersion forces?
    13·2 answers
  • What is the pressure of the air in a car tire (in psi) if it is 1.73 atm?
    8·1 answer
  • Hi hello I need help ASAP <br>Determine the slope of this line <br>a.2.5<br>b.0.75<br>c.1<br>d.0.4​
    8·1 answer
  • The burning of ethane produces both co2 and H2O. if 400 ml of CO2 is produced at 30°C and 740 torr, what volume of water vapor w
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!