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
exis [7]
3 years ago
11

Which metal is more active than NI and less active than Zn?

Chemistry
2 answers:
Mademuasel [1]3 years ago
7 0

Answer : The correct option is, (2) Cr (Chromium)

Explanation :

The reactivity series of metal are arranged of the reactivity from the highest to the lowest. Reactivity series is used to determine the products of the single displacement reactions. In the single displacement reaction, the most reactive metal displaces the least reactive metal.

From the given reactivity series we conclude that there are two metal (Mg and Cr) are more reactive metal than the Ni and there are two metal (Pb and Cr) are less reactive metal than the Zn. So, the Cr (Chromium) is the metal which is more active than Ni and less active than Zn.

Hence, the correct option is, (2) Cr

jeka943 years ago
5 0
Cr is more active than nickel and less active than zinc.
You might be interested in
Science**
mina [271]

The less mass an object has, the greater its gravitational force.

8 0
3 years ago
What is the process of photosynthesis<br>​
Fudgin [204]

Answer:

Photosynthesis is the process by which plants, some bacteria and some protistans use the energy from sunlight to produce glucose from carbon dioxide and water.

Explanation:

4 0
3 years ago
Read 2 more answers
Calculate ΔH for the reaction: C(graphite) + 2H 2(g) + 1/2 O 2(g) =&gt; CH 3OH(l) Using the following information: C(graphite) +
Alika [10]

Answer:

\Delta H for the given reaction is -238.7 kJ

Explanation:

The given reaction can be written as summation of three elementary steps such as:

C(graphite)+O_{2}(g)\rightarrow CO_{2}(g) \Delta H_{1}= -393.5 kJ

2H_{2}(g)+O_{2}(g)\rightarrow 2H_{2}O(l) \Delta H_{2}= (2\times -285.8)kJ

CO_{2}(g)+2H_{2}O(l)\rightarrow CH_{3}OH(l)+\frac{3}{2}O_{2}(g)  \Delta H_{3}= 726.4 kJ

---------------------------------------------------------------------------------------------------

C(graphite)+2H_{2}(g)+\frac{1}{2}O_{2}(g)\rightarrow CH_{3}OH(l)

\Delta H=\Delta H_{1}+\Delta H_{2}+\Delta H_{3}=-238.7 kJ

4 0
3 years ago
Root nodules are associations between bacteria and plant roots responsible for
max2010maxim [7]

Answer: Root nodules are associations between bacteria and plant roots responsible for nitrogen fixation.

Explanation:

  • As nitrogen present in atmosphere cannot be used by plants directly.
  • Nitrogen present in atmosphere is converted into nitrogen compounds by bacteria which is present in root nodules of a plant.
  • These compounds of nitrogen are then used by plants for various functions.
8 0
3 years ago
True or false? To prepare 20.0 mL of 2.00 M solution of hydrochloric acid from a 10.0 M stock solution, you should take 4.00 mL
Aleksandr-060686 [28]
Sorry I don’t know but o have to answer for pionts
6 0
3 years ago
Other questions:
  • The pka value for the carboxylic acid group in acetic acid is 4.75. write the predominant structure of acetic acid at (a ph=1, (
    5·1 answer
  • What is the chemical formula for zinc phosphate
    10·2 answers
  • 8. The density of an iron nail is the same as the density of an iron frying pan. Explain
    10·1 answer
  • A gaseous compound has a mass of 8.00 g at 2.81 atm and 300. K in a 1.00 L container.
    10·2 answers
  • Conserving the quality of available water is a high priority world-wide. There are many countries where the water supply is reac
    7·1 answer
  • What are 10 household items that use em waves
    8·1 answer
  • I in the blanks.<br>The solid substance left on the filter paper is called​
    15·1 answer
  • Is the equation balanced or unbalanced? Explain. AI + O2 --&gt; AI2O3
    14·1 answer
  • If you throw a ball into the air, the force of ________ makes the ball fall back toward Earth.
    9·2 answers
  • How many moles are there in 15.0 grams of SiO2
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!