What is the difference in the beginning between primary succession and secondary succession?a. secondary succession has water
b. secondary succession has soil
c. primary succession has soil
d. primary succession has water

Answers

Answer 1

Answer: Option B. secondary succession has soil

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The molar mass of I2 is 253.80 g/mol, and the molar mass of NI3 is 394.71 g/mol. How many moles of I2 will form 3.58 g of NI3?
Which formula represents copper(I) oxide?(1) CuO (3) Cu2O(2) CuO2 (4) Cu2O2

Which of the following examples is a compound containing an ionic bond?A. O2
B. H2O
C. CaO
D. CH4

Answers

Answer:

caO

Explanation:

Final answer:

Among the given options, Calcium Oxide (CaO) contains an ionic bond. This bond is formed through the transfer of two electrons from a calcium atom to an oxygen atom.

Explanation:

The question seeks to identify the compound that contains an ionic bond from the provided options. Ionic bonds are usually formed between metals and non-metals. In these cases, the metal atom donates an electron to the non-metal atom, leading to the formation of a positively charged cation and a negatively charged anion. These oppositely charged ions then attract each other, forming an ionic bond.

Let's look at the options:

A. O2 - Oxygen molecules are formed by the sharing of electrons between two oxygen atoms, which is a covalent bond, not ionic.
B. H2O - water contains two hydrogen atoms bonded to an oxygen atom. These are covalent bonds as well.
C. CH4 - Methane, comprised of carbon and hydrogen atoms, involves covalent bonding.
D. CaO - Calcium Oxide is formed by the transfer of two electrons from a calcium atom to an oxygen atom, resulting in an ionic bond. Therefore, CaO is the correct answer.

Learn more about Ionic Bond here:

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A sample of an unknown substance has a mass of 89.5 g. If 345.2 J of heat are required to heat the substance from 285 K to 305 K, what is the specific heat of the substance?

Answers

The specific heat of the unknown sample has been $\rm \bold{0.192\;\;J/g^\circ C}$ .

Specific heat has been defined as the amount of heat required to raise the temperature of 1 gram of substance by 1 degree Celsius.

The specific heat (c) for a substance can be given by:

$Q=mc\Delta T$ ......(i)

Where, the heat required by the substance, $Q=345.2\;\text J$

The mass of the substance has been, $m=89.5\;\text g$

The change in temperature of the system has been, $\Delta T$

The change in temperature has been given as:

$\Delta T=T_f-T_i$

The initial temperature of the substance, $T_i=285\;\text K$

The final temperature of the substance, $T_f=305\;\text K$

Substituting the values for the change in temperature, $\Delta T$ :

$\Delta T=305\;-\;285\;K\n\Delta T=20\;\text K$

Substituting the values in equation (i):

$345.2=89.5\;*\;c\;*\;20\n345.2=1,790c\nc=0.192\rm \;J/g^\circ C$

The specific heat of the unknown sample has been $\rm \bold{0.192\;\;J/g^\circ C}$ .

For more information about specific heat, refer to the link:

brainly.com/question/2094845

The specific heat is the heat needed per unit mass to raise the temperature by 1 degree celsius. So the specific heat = heat/(mass*ΔT) = 345.2/[89.5*(305-285)]=0.193 J/(g*℃). When using ΔT, the unit K and ℃ are the same.

Which of the following is a quemical property ?

Answers

One chemical property would be reactivity of a particular substance.

All chemical reactions use reactants in a specific proportion or stoichiometry to form products. The __________ reactant regulates the amount of products produced. A) excess B) limiting C) proportional D) stoichiometric

Answers

The correct answer is B) Limiting.

Hope this helped!

Answer:

B: Limiting

Explanation:

The limiting reactant regulates the amount of products produced, because you have the least amount of the limiting reactant.

chlorine has 7 outer energy level electrons and argon has 8. what is the difference in the reactivity of these two elements?

Answers

chlorine is more reactive than argon, because argon is not reactive at all. Chlorine only has to gain 1 valence electron

Chlorine is highly reactive as it seeks to gain an extra electron to balance its outer shell (max 8) and argon is stable because it has a stable outer shell

Life is possible on earth because of suitable air water and temperatures true or false