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
disa [49]
2 years ago
5

NEED HELP

Chemistry
1 answer:
Leona [35]2 years ago
5 0
<h3>Zinc +oxygen - zinc oxide</h3>

<h3><em>chlorine</em><em>+</em><em> </em><em>magnesium</em><em> </em><em>-</em><em> </em><em>magnesium</em><em> </em><em>dichloride</em></h3><h3><em>iron</em><em> </em><em>+</em><em> </em><em>arsenic</em><em> </em><em>-</em><em> </em><em>ferric</em><em> </em><em>arsenate</em></h3>

<h2><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>Hope</em><em> </em><em>it</em><em> </em><em>is</em><em> </em><em>helpful</em><em> </em><em>for</em><em> </em><em>you</em></h2>

You might be interested in
A clam farmer has been keeping records of the water temperature and the number of clams developing from fertilized eggs. The dat
adoni [48]

Answer:

The dependent variable is the number of clams developing from fertilized eggs.

The independent variable is the water temperature

The optimum temperature for clam development is 30 degrees centigrade.

Explanation:

The graph of the number of clams developing from fertilized eggs and water temperature is attached to this answer.

The independent variable is being manipulated in an experiment. As it changes, it produces a corresponding change in the dependent variable.

Here, the water temperature is the independent variable. As it changes, the number of clams developing from fertilized eggs (dependent variable) also changes alongside.

The optimum temperature is the temperature at which the greatest number of clams developing from fertilized eggs is produced. We can see from the graph that this temperature is 30 degrees centigrade.

6 0
2 years ago
Sawing a board in half is an example of a chemical change
koban [17]

Sawing a board in half is a physical change not a chemical change the board doesnt change wood or whatever material it is is still would still be wood
If it were burned it would be a chemical change but its properties stay the same atomically so thats why its not a chemical change.

4 0
3 years ago
What is the element that is in period 5 and group 3?
rjkz [21]

Answer:

Rubidium

Rubidium is the first element placed in period 5. 

6 0
3 years ago
How much heat is evolved in converting 1.00 mol of steam at 155.0 ∘c to ice at -50.0 ∘c? the heat capacity of steam is 2.01 j/(g
Ne4ueva [31]
When the specific heat capacity of the water is 4.18 J/g.°C so, we are going to use this formula to get the heat for cooling three  phases changes from steam to liquid and from liquid to ice (solid) :

when Q = M*C*ΔT 

Q is the heat in J

and M is the mass in gram = 1 mol H2O * 18 g/mol(molar mass) = 18 g

C is the specific heat J/g.°C

ΔT is the change in temperature

Q = Mw *[ ( Csteam * ΔTsteam)+(Cw*ΔTw) + (Cice  * ΔT ice)]

    = 18 g * [(2.01 * (155-100°C)) + (4.18 * (100-0°C)) + (2.09 * (0 - 55 °C))]

∴Q = 7444.8 J

and when we know that the heat of fusion for water = 334J/g

and heat of vaporization for water =  2260J/g


∴Q for the two phases changes = M * (2260+334) 

                                                      = 18 * (2260+334)

                                                      = 46692 J 

∴ Q total = 7444.8 + 46692 = 54136.8 J
5 0
3 years ago
The name of an alcohol side chain is known as an alkoxy group. True or false?
mylen [45]
By itself, i don’t think so.

though, paired with a hydrogen bond, it is.

If i’m wrong, please feel free to let me know :)
6 0
2 years ago
Other questions:
  • How do I do this? What do I do what are the steps I have no idea
    15·2 answers
  • Both picric acid and tannic acid are used in the treatment of burns, Why?
    9·1 answer
  • A globe is placed on your desk and you are asked to identify its physical properties. How would you describe the globe?
    10·1 answer
  • If the first reaction used 0.5 g of copper then how many grams of copper will be produced in the last reaction?
    11·1 answer
  • A student is in the lab and combines two unknown substances ( which you should never do because it is not safe). one is a white
    5·1 answer
  • 6. Which of the following statements is not true for an astronomical unit?
    5·2 answers
  • Consider the following reaction: 2 NO(g) + 5 H2(g) → 2 NH3(g) + 2 H2O(g) Which set of solution maps would be needed to calculate
    12·1 answer
  • 6. Matter with a definite volume but no definite shape is a<br> A gas<br> B. solid<br> C.liquid
    13·1 answer
  • The image shows particles of salt dissolved in water.
    14·2 answers
  • Which type of Symbiotic Relationship is described below?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!