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
lozanna [386]
4 years ago
12

Simple chemistry question please help. Look at image.

Chemistry
1 answer:
marishachu [46]4 years ago
6 0

It's the last one. They all have the same number of electrons in their outer ring. They're also called valence electrons.

Hope this helped!

You might be interested in
Newtons second law of motion states that
insens350 [35]

Answer:

The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force,

Explanation:

3 0
3 years ago
Which term describes matter that is a substance made of different kinds of atoms bonded together?
sveta [45]
A heterogeneous Mixture discribes a substance made of different kinds of atoms bonded together.
8 0
3 years ago
The amount of heat absorbed by the alcohol was determined to be 1.17kJ. Given that the specific heat of the alcohol is 2.42J/gC
quester [9]

Answer:

                      ΔT  =  20.06 °C

Explanation:

The equation used for this problem is as follow,

                                    Q  =  m Cp ΔT   ----- (1)

Where;

           Q  =  Heat  =  1.17 kJ = 1170 J

           m  =  mass  =  24.1 g

           Cp  =  Specific Heat Capacity  =  2.42 J.g⁻¹.°C⁻¹

           ΔT  =  Change in Temperature  =  <u>??</u>

Solving eq. 1 for ΔT,

                                ΔT  =  Q / m Cp

Putting values,

                                ΔT  =  1170 J / 24.1 g × 2.42 J.g⁻¹.°C⁻¹

                                ΔT  =  20.06 °C

6 0
3 years ago
An experiment is designed to determine if the amount of sugar in a drink affects the likelihood that bees will be attracted to i
guajiro [1.7K]

Answer:

The amount of sugar in the sample

Explanation:

The independent variable is not dependent on the other observed variable in an experiment. So In this case, it is the amount of sugar as it does not change by the other variable in the experiment, i.e. the number of bees that visit the sample.

The other options are irrelevant in this experiment because they are not being studied.

8 0
4 years ago
Identify the effect of increasing acidity on the solubility of the given compounds. Drag the appropriate items to their respecti
PIT_PIT [208]

Answer:

Ca3(PO4)2- Increase in solubility

Barium hydroxide- increase in solubility

Magnesium carbonate- increase in solubility

Copper II sulphide- increase solubility

Lead II bromide- increase solubility

CuI - increase solubility

Explanation:

Calcium phosphate solubility is pH dependent. At lower pH, calcium phosphate is more soluble in water while at pH above 8.5, the solubility of calcium phosphate decreases markedly.

For Barium hydroxide and magnesium carbonate,decreasing the pH will increase the solubility of the compound.

For copper II sulphide,decreasing the pH will lead to a greater solubility. Also, lead II bromide is ordinarily insoluble in water but it's solubility increases with decreasing pH.

CuI is insoluble in water but soluble in dilute hydrochloric acid.

6 0
3 years ago
Other questions:
  • An atorn has 9 electrons and 9 protons at the start. If it loses 2 electrons, the net charge on the atom will be. If the atom in
    5·1 answer
  • How are the elements arranged in the modern periodic table g?
    14·1 answer
  • 55 cm3 of gasoline are mixed with 60 cm3 of water. what is the average density of the mixture?
    10·1 answer
  • An 80-gram sample of water at 10C absorbs 400 calories of heat energy What is the final temperature of the water?
    5·2 answers
  • A solution is prepared by dissolving 150 mL of ethanol in enough water to make a 500 mL solution. What is the percent by volume
    8·1 answer
  • Zinc reacts with hydrochloric acid according to the reaction equation Zn ( s ) + 2 HCl ( aq ) ⟶ ZnCl 2 ( aq ) + H 2 ( g ) How ma
    10·1 answer
  • Divide the numbers in around the answer to the correct number of significant figures.
    13·1 answer
  • Please help me with this net ionic chem equation
    10·1 answer
  • A mole is blank objects
    12·1 answer
  • Picture is below! Thanks :)​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!