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
Zarrin [17]
3 years ago
15

Equations for chemistry

Chemistry
1 answer:
Otrada [13]3 years ago
5 0
Here...see the attachment

You might be interested in
A block of iron has a mass of 826 g. What is the volume of the block of iron whose density at 25°C is 7.9
LuckyWell [14K]

Answer:

105

Explanation:

Density = mass/volume

therefore volume = mass/density

826/7.9=105 (To three significant figure)

8 0
3 years ago
Consider a solution containing .100 M fluoride ions and .126M hydrogen fluoride. The concentration of fluoride ions after the ad
S_A_V [24]
Given:

Concentration of Fluoride ions = 0.100 M
Concentration of Hydrogen Fluoride = 0.126 M

Asked: Concentration of fluoride ions after the addition of 5ml of 0.0100 M HCl to 25 mL of the solution

Assume: 50:50 ratio of fluoride ions and HF

12.5ml*0.1mol/L *1L/1000mL + 12.5*0.126mol/L * 1L/1000mL = 2.825x10^-3 moles F-

5ml * 0.01 mol/L *1L/1000mL = 5x10^-5 moles

Assume: Volume additive

Final concentration = 2.825x10^-3 + 5x10^-5 moles/ 30 ml * 1000ml/L =0.0958 M
<span />
3 0
3 years ago
isotopes of an element have the same number of protons but a different number of neutrons below u will see the nucleus of four d
dexar [7]
What is your question? Its not clear
3 0
3 years ago
A particular state of matter has atoms that are packed closely together and vibrating in fixed positions. A phase change occurs
creativ13 [48]

Answer:

it goes to a solid to a liquid

Explanation:

When something is a solid the molecules are impact together and have a small sense of vibration. But as the solid melts away for example ice, the molecules become more loose forming into a liquid

5 0
3 years ago
Read 2 more answers
Earthquake foci (Focus, singular) are....
sveta [45]
The answer is the 3rd choice
4 0
3 years ago
Read 2 more answers
Other questions:
  • What is the net charge if there are 3 protons and 3 electrons
    9·1 answer
  • if an atom has 17 electrons and its mass number is 35, calculate the following: - number of protons - number of neutrons -atomic
    14·1 answer
  • Greg classified some substances as shown in the table. Greg's Table Soluble in Water Insoluble in Water Dishwashing detergent Cl
    5·2 answers
  • The process of forming two DNA molecules for one is called?
    5·2 answers
  • The correct mathematical expression for finding the molar solubility (s) of sn(oh)2 is:
    11·1 answer
  • Compared to the charge of a proton, the charge of an electron has?
    8·1 answer
  • How do you do part B?
    14·1 answer
  • Match “the same” or “different” to each sentence.
    7·1 answer
  • Can plants and animals adapt more easily to slow environmental changes or fast environmental changes? Explain.
    10·2 answers
  • How many joules are required to change 40 grams of water to steam at the boiling point?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!