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
svetoff [14.1K]
3 years ago
15

Which element has properties most similar to those of chromium

Chemistry
1 answer:
Vedmedyk [2.9K]3 years ago
7 0
Chromium is a chemical element with symbol Cr and atomic number 24. It is the first element in group 6. It is a steely-grey, lustrous, hard and brittle metal which takes a high polish, resists tarnishing, and has a high melting point.
You might be interested in
Water has a heat of fusion of about 300J/gram and a heat capacity for liquid water of a about 4J/gC. How much heat is needed to
amm1812

Answer:

The total heat required is 3.4 kJ

Explanation:

Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.

There is a direct proportional relationship between heat and temperature. So, the amount of heat a body receives or transmits is determined by:

Q = c * m * ΔT

where Q is the heat exchanged by a body of mass m, made up of a specific heat substance c and where ΔT is the temperature variation.

In this case you know;

  • Q= ?
  • c= 4 \frac{J}{g*C}
  • m= 10 g
  • ΔT= Tfinal - Tinitial= 10 C - 0 C= 10 C

Replacing:

Q= 4\frac{J}{g*C} *10 g * 10 C

Solving:

<em>Q1= 400 J</em>

On the other hand, you must determine the heat required to convert 0 ∘ C of ice to 0 ∘ C of liquid water by:

Q2=m*heat of fusion

Q2=10 g* 300 \frac{J}{g}

<em>Q2= 3,000 J</em>

The total heat required is:

Q= Q1 + Q2= 400 J + 3,000 J

Q= 3,400 J= 3.4 kJ (1 kJ= 1,000 J)

<u><em>The total heat required is 3.4 kJ</em></u>

5 0
3 years ago
How many moles of na contain 7.88x1021 atoms of na
labwork [276]

Answer:

the answer to the qustion is 0.013089701 na

Explanation:

n/a

7 0
1 year ago
What would be a simple way to block erosion
Travka [436]
By applying some (compared to other things) simple steps<span>, </span>you can control and prevent soilwearing away<span>! </span>The four most common soil wearing away prevention methods are green plants<span>, </span>geotextiles<span>, </span>mulch<span>, </span>and (big walls to hold back water, soil, etc.)<span>. </span>Green plants<span>: </span>The simplest andmost natural way to prevent wearing away is through planting green plants<span>.</span>
7 0
2 years ago
To get more electric current , we have to connect them in ______ combination.​
Sever21 [200]

Answer:

A third type of circuit involves the dual use of series and parallel connections in a circuit; such circuits are referred to as compound circuits or combination

Explanation:

3 0
2 years ago
What model is the basis for chemistry?<br> Group of answer choices
serg [7]

Answer:

bohrs atomic model

Explanation:

6 0
3 years ago
Other questions:
  • Arsenic does not have any valence electrons in the 3D orbital because​
    12·1 answer
  • The point where the blue line intercepts the temperature axis is…
    13·2 answers
  • What is the color of bromcresol green indicator in a solution with a pH of 2.0
    9·1 answer
  • In nature, where do fusion reactions take place?
    13·1 answer
  • Imagine a molecule with six total domains that are confined to two-dimensional space, so the electron group arrangement is hexag
    14·1 answer
  • Liquids and solids are left out of the equilibrium constant expression because their concentrations remain constant during react
    10·1 answer
  • Will give brainliest
    11·1 answer
  • Which one of these is it?
    11·1 answer
  • How many atoms are in 4Ca(NO3)2
    7·1 answer
  • Report accidents to your teacher,no matter how they may seem
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!