I need soon this is due at 10:30 pm its curently 6:00 pm
What is parasitism?


Answer 1


the practice of living as a parasite in or on another organism.

Hope this HELPS!!!


Related Questions

What is the poH of a 3.67 x 10-5 M OH solution and is it acidic, basic, or neutral?
Which compound is classified as an electrolyte? a) C6H12O6 b)Ca(OH)2 c)C12H22O11 d)CH3OH
A chemical equation is shown:Al + O2 A1203According to the law of conservation of mass, how many atoms of oxygen exist in the products of this reaction?6532
Ne belongs to what group. a. noble gases, b.alkali metals, c. halogens, d. alkaline earth metals​
A piece of charcoal used for cooking is found at the remains of an ancient campsite. a 0.94 kg sample of carbon from the wood has an activity of 1580 decays per minute. find the age of the charcoal. living material has an activity of 15 decays/minute per gram of carbon present and the half-life of 14c is 5730 y. answer

A solution contains 0.10 M Pb2+ and 0.10 M Cu2.. Which cation will precipitate first when a solution of NazS is slowly added to the mixture? Refer to the information sheet for solubility constants. P A) Pb2+ B) Cu2+ C) impossible to tell D) both cations



b) Cu2+


  • information sheet for solubility constants:

Ksp PbS = 3.4 E-28

Ksp CuS = 6.0 E-37

  • PbS ↔ Pb2+  +  S2-

∴ Ksp = 3.4 E-28 = [ Pb2+ ] * [ S2- ]

∴ [ Pb2+ ] = 0.10 M

⇒ [ S2- ] = 3.4 E-28 / 0.10 = 3.4 E-27 M

  • CuS ↔ Cu2+  +  S2-

∴ Ksp = 6.0 E-37 = [ Cu2+ ] * [ S2- ]

∴ [ Cu2+ ] = 0.10 M

⇒ [ S2- ] = 6.0 E-37 / 0.10 = 6.0 E-36 M

we have:

(1) [ S2- ] PbS >> [ S2- ] CuS

(2) Ksp PbS >> Ksp CuS

from (1) and (2) it can determined, that separation can be carried out and also the cation that precipitates first is the Cu2+

Whats the difference between china and Europe



the difference is they arnt close



China is communist, Europe isn't.


Which is the electron configuration for lithium? A. 1s2 B. 2s3 C. 1s22s1 D. 1s12s2


The electron configuration for lithium 1s^(2)  2s^(1). So, the correct answer is C.

Electronic configuration:-

The electron configuration of an element describes how electrons are distributed in its atomic orbitals. Electron configurations of atoms follow a standard notation in which all electron-containing atomic subshells (with the number of electrons they hold written in superscript) are placed in a sequence.

Electronic configuration for lithium:-

The atomic number of lithium is 3. So, the electronic configuration is as follows:-

Li= 1s^(2)  2s^(1)\n=(He)  2s^(1)

So, the correct option is C.

Learn more about the electronic configuration here:-





just took the test on edge

C=46.67%, H=4.48%, N=31.10%, O=17.76%.
The molecular weight is 180.16g/mol.






In this case, since the determination of an empirical formula is covered by first computing the moles of each atom as shown below:

n_C=(46.47g)/(12g/mol)=3.9mol\n\n n_H=(4.48g)/(1g/mol) =4.5mol\n\nn_N=(31.10g)/(14g/mol) =2.2mol\n\nn_O=(17.76g)/(16g/mol) =1.1mol

Now, we divide each moles by the fewest moles (those of oxygen), to obtain the subscripts in the empirical formula:

C:(3.9)/(1.1)=3.5 \n\nH:(4.5)/(1.1)=4 \n\nN:(2.2)/(1.1) =2\n\nO:(1.1)/(1.1) =1

Thus, the empirical formula, taken to the nearest whole subscript is:


Whose molar mass is 180.16, therefore the empirical formula is the same to the molecular one.

Best regards!

How much energy in joules does it take to raise the temperature of 255g of water by 12.5C


Energy in a system can be calculated by multiplying the given mass to thespecific heat capacity of the substance and the temperature difference. It isexpressed as follows:

Energy = mC(T2-T1)
Energy = 255(4.184)(12.5)
Energy = 13336.5 J

Answer: The amount of energy required to raise the temperature is 13323.75 joules.

Explanation :

The amount of energy required to raise the temperature can be calculated as follows.

                   q = m* C* \bigtriangleup T


        q = heat energy

        m = mass of water

         C = specific heat

          T = temperature

Remember that the specific heat of water is 4.18\left ( (J)/(g^\circ C)} \right ).

Therefore, putting the values in the above equation as follows.

        q = m* C* \bigtriangleup T

           = 255 g * 4.18 \left ( (J)/(^\circ C)} \right )* 12.5^oC

         = 13323.75 joules

So, the amount of energy required to raise the temperature is 13323.75 joules.

PromptDescribe the general process by which new elements are synthesized.

Please help!!!!


New elements are synthesized from the nuclear reaction of already existing elements. The change in nuclear composition of an atom leads to the conversion to new element.

What are elements ?

Elements are the basic things of anything in the world. Elements join together to form molecule and compounds. There are 118 known elements in periodic table.

Many more elements  discovered by scientists are accidental. The properties of each elements are determined based on their atomic number. The nuclear reactions mostly for radioactive elements make new elements with different nuclear composition.

New elements are produced as sub products that are resulted from several synthesis reactions involving the nuclear change. Radioactivity involving bombardment of charged particles such as alpha, beta or their emission also leads to formation of new elements.

Find more on new elements:




Describing Describe the general process by which new elements are synthesized.