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
AnnZ [28]
3 years ago
15

Can someone help me please

Chemistry
1 answer:
mr_godi [17]3 years ago
4 0

Answer:

health issues and physical encounters

You might be interested in
To name the compound written as CuCl2, you would write:
vovangra [49]

Answer: option C. Copper (II) chloride

Explanation:

To name CuCl2, we need to know the oxidation state of Cu in the compound as chlorine always have oxidation on —1 in all its compound. The oxidation state of Cu can be calculated as follows:

Cu + 2Cl = 0 (since the compound has no charge)

Cl = —1

Cu + 2(—1) = 0

Cu —2 = 0

Collect like terms

Cu = 0 +2

Cu = +2

Therefore, the oxidation state of Cu in CuCl2 is +2.

The name of the compound will be copper(ii) chloride, since cupper has oxidation state +2 in the compound.

4 0
3 years ago
When a 3.00 g 3.00 g sample of KBr KBr is dissolved in water in a calorimeter that has a total heat capacity of 1.36 kJ ⋅ K − 1
cupoosta [38]

Answer:

Molar heat of solution of KBr is 20.0kJ/mol

Explanation:

Molar heat of solution is defined as the energy released (negative) or absorbed (Positive) per mole of solute being dissolved in solvent.

The dissolution of KBr is:

KBr → K⁺ + Br⁻

In the calorimeter, the temperature decreases 0.370K, that means the solution absorbes energy in this process. The energy is:

q = 1.36kJK⁻¹ × 0.370K

q = 0.5032kJ

Moles of KBr in 3.00g are:

3.00g × (1mol / 119g) = 0.0252moles

Thus, molar heat of solution of KBr is:

0.5032kJ / 0.0252moles = <em>20.0kJ/mol</em>

3 0
3 years ago
Blue colour of cupric nitrate on strongly heating gives gives black cupric oxide powder along with oxygen gas and nitrogen dioxi
Zinaida [17]

Please see the image.

6 0
3 years ago
Help please!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1
tangare [24]

Answer:

A

Explanation:

4 0
3 years ago
Read 2 more answers
All organisms have the same number of cells<br>A. true<br>B. false​
MakcuM [25]

B. false is the answer of this question

4 0
3 years ago
Read 2 more answers
Other questions:
  • A beaker containing a mixture of N2(g) and H2(g) is cooled by placing it in a tray of cold water. In response to the cooling, th
    7·2 answers
  • Gamma radiation:
    14·1 answer
  • Scientific models can be used for a variety of different purposes. Which of the following statements about scientific models is
    5·1 answer
  • Which of the following are not created by an arrangement of electric charges
    12·1 answer
  • At what speed do gamma Rays travel?
    14·1 answer
  • Any ions with a charge (3+ ) has?
    15·1 answer
  • A material absorbs or reflects all of the light that reaches it. What type of material is it?
    12·1 answer
  • What evidence is there that all state of matter have mass
    7·1 answer
  • A 100.0 lb skier moves at 40.00miles/hour. Calc her kinetic energy.
    8·1 answer
  • What is the molar mass of nickel (ll) chloride(NiCl2)
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!