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
alisha [4.7K]
3 years ago
6

Pick the correct products for the following reaction acid + metal reaction: 2 HNO3 + Co -->

Chemistry
2 answers:
hammer [34]3 years ago
6 0

Answer:

Co(NO3)2 + H2

Explanation:

The full balanced reaction equation of the reaction is shown below;

2HNO3(aq) + Co (s)-------> Co(NO3)2(aq) + H2(g)

One of the properties of metals is that metals displace hydrogen from dilute acids. This property is only exhibited by metals which are above hydrogen in the electrochemical series.

This implies that the ability to displace hydrogen from aqueous solution depends on the reduction potential of the metal. Metals having more negative reduction potentials than hydrogen can displace it from aqueous solution.

Cobalt II having a negative reduction potential of about -0.28 V can displace hydrogen from a dilute acid. Hence the answer.

MrMuchimi3 years ago
3 0

Answer:

2. Co(NO3)2 + H2

Explanation:

Hello,

In this case, we are evidencing a simple displacement reaction wherein the cobalt is able displace the hydrogen to produce cobalt (II) nitrate and gaseous hydrogen as a result of cobalt's higher activity:

2 HNO_3 + Co\rightarrow Co(NO_3)_2+H_2

Therefore, answer is 2. Co(NO3)2 + H2.

Best regards.

You might be interested in
If you are involved in a vehicle accident, you should not drink any alcohol up to ___ hours after the accident or you could be l
Luda [366]

Answer: 6

Explanation:

Alcohol is a psychoactive drug with a high number of side effects that can seriously affect our body. <u>The amount and circumstances of consumption play an important role in determining the duration of intoxication.</u> For example, consuming alcohol after a large meal is less likely to produce visible signs of intoxication than on an empty stomach.

Alcohol has a two-phase effect on the body, meaning that its effects change over time.  Initially, it produces feelings of relaxation and joy, but later consumption can lead to blurred vision and coordination problems.  Cell membranes are highly permeable to alcohol, so once alcohol is in the bloodstream, it can spread to almost all body tissues.  

Unconsciousness can follow excessive consumption, and extreme levels of consumption can lead to alcohol poisoning and death. Death can also be caused by asphyxiation, if vomit - a frequent result of excessive drinking - blocks the windpipe and the individual is too drunk to respond.  An appropriate first-aid response to an unconscious, drunk person is to place him or her in the recovery position.  

<u>When alcohol enters the bloodstream (30-90 minutes after ingestion), there is a decrease in the sugars present in the bloodstream, causing a feeling of weakness and physical exhaustion. </u> This is because alcohol accelerates the transformation of glycogen (a substance that stores sugar in the liver) into glucose, which is then eliminated more quickly.  

After the ingestion of alcohol, a series of effects or symptoms occur in the short term, depending on the dose ingested (although other individual factors are affected).

  • Euphoria and excitement phase
  • Intoxication: The nervous system is affected as the loss of the capacity to coordinate movements is caused, producing imbalance and sometimes falls. If abused, locomotor ataxia can occur, which is a paralysis characteristic of alcoholics.
  • Hypnotic or confused phase: Irritability, agitation, drowsiness, headache, ysarthria, ataxia, dysmetry, nausea and vomiting.
  • Anaesthetic phase or stupor and coma, inconsistent language.
  • Bulbar or death phase: Cardiovascular shock, inhibition of the respiratory center, cardio-respiratory arrest and death.

Alcohol is broken down mainly in the liver, which can metabolize about 1 drink per hour for men. Factors such as age, weight, gender, and the amount of food eaten can affect how quickly the body can process alcohol. The amount of time alcohol can be detected in blood is up to 6 hours. Then it is not recommended to drink alcohol until after 6 hours if you have been involved in an accident, since alcohol can be detected in the blood in that time range. <u>Because of the effects alcohol has on the body and how it can affect driving, if alcohol is detected you can be legally charged with driving under its influence.</u>

6 0
3 years ago
At what points does the object accelerate please explain
nirvana33 [79]

Answer:

M=3

B=25

Equation= 3x+25

Explanation:

M is your slope and if you follow the slope- intercept formula (y=m+b) you just need to plug in the numbers.

Thus your answer:

M=3

B=25

Equation= 3x+25

8 0
2 years ago
An ion of oxygen- 16 contains 8 protons and has a 2- charge. How many electrons does it have?
Verdich [7]

Answer:

i would say 10, so the anser is A.

Explanation:

because there are the same number of protons and electrons, therefore for a regular O, you are supposed to have only 8 protons, but it is charged, thus, whatever the charge is will be taken into consideration into how much the proton and electron doe it have. Thus, for this case, it has 10, because the charge is negative and you have 8 electron plus 2 = 10.

3 0
2 years ago
An atom or ion has 41 neutrons, 36 protons, and 36 electrons. Identify the clement symbol, and determine the mass
Paul [167]

The atom is krypton and its symbol is Kr.

the mass number is 41 + 36 = 77

its charge is 0 as it is a noble gas.

7 0
3 years ago
Công thức toingr quát anken
Maksim231197 [3]

Answer:

ndcjc  kin ksklp

Explanation:

4 0
2 years ago
Other questions:
  • There are six kingdoms of living things. Archaebacteria is one of these kingdoms. Which of the following are also kingdoms of li
    13·2 answers
  • NaOH, KOH, and Ca(OH)2 are examples of (4 points)
    6·1 answer
  • How could you verify that you produced carbon dioxide in your combustion reaction? 2. what indication did you have that nh3 was
    9·1 answer
  • Ri
    6·1 answer
  • The enthalpy change for the explosion of ammonium nitrate with fuel oil is –7198 kJ for every 3 moles of NH4NO3. What is the ent
    13·1 answer
  • What is the theoretical Van’t Hoff factor for the following substances: HCL &amp; ethanol (CH3CH2OH)
    15·1 answer
  • What are metal complex formation titrations, what is an example of their use?​
    10·1 answer
  • Why does an "acid spill kit" often contain baking soda?
    13·2 answers
  • Astronomers observed that the orbit of Uranus was not uniform. Therefore, they hypothesized the existence of another planet. Thi
    7·1 answer
  • What is simple chemical test could you carry out to see if carbon dioxide has been produced
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!