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abruzzese [7]
3 years ago
8

A scientist wants to create a drug that will kill cancer cells upon absorption in the intestines. In order for the drug to work

effectively, it must not be absorbed until it reaches the intestines. The scientist tests different acidities of compounds to determine which combination will keep the drug intact until it reaches the intestines. What part of the engineering process is the scientist engaged in?
Chemistry
2 answers:
Anarel [89]3 years ago
8 0
The testing of the acidities of the compounds to determine the combination that will keep the drug intact before it reaches the intestines is a part of EXPERIMENTATION process. The experimentation is done in order to prove or answer different queries that were raised during the hypothesis making. 
OlgaM077 [116]3 years ago
7 0

<u><em>make a plan</em></u> i

s the answer for my apex users

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A compound has a molar mass of 44.01 g/mol. What is its identity?
Bess [88]

This problem is very vague since no other details are given. However for the sake of calculation let us assume that the compound is an ideal gas at STP.

So that the molar volume is: 1 mole = 22.4 L

 

<span>density = (44.01 g/mol) * (1 mol / 22.4 L) = 1.96 g/L = 1.96 kg/m^3</span>

6 0
3 years ago
Match each type of chemical bond with its properties. Drag the items
natka813 [3]

Explanation:

covalent bond   poor thermal conductivity

                          molecular compounds

metallic bond   ductile

                        electron sea model

ionic bond       crystalline

                        hard and brittle

Covalent compounds have the following properties:

  • Gases and volatile liquids or low melting point solids
  • Often insoluble in polar solvents
  • Mainly non - conductors
  • Have slow reactions

Metallic compounds:

  • Have good malleability, ductility, electrical and thermal conductivity.
  • A large sea of electron by jointly packed atoms.
  • They are mostly in metals
  • Accounts for the bulk of the physical properties displayed by metals

Ionic compounds:

  • High melting and boiling point
  • Soluble in polar liquids
  • Conducts electricity in molten or aqueous forms.
  • Mostly crystalline solids
  • Usually hard and brittle
  • Undergoes fast chemical reactions

learn more:

Covalent bonds brainly.com/question/5258547

Ionic bond brainly.com/question/6071838

#learnwithBrainly

5 0
3 years ago
The rate constant for the first-order decomposition at 45 °C of dinitrogen pentoxide, N2O5, dissolved in chloroform, CHCl3, is 6
weeeeeb [17]

Answer:

Rate of the reaction= 9.92× 10^-5 M² min-1

Explanation:

Using the equation of reaction

2N2O5 ⟶ 4NO2+O2

Rate = k[N2O5]²

From the question k= 6.2×10-4

[N2O5]= 0.4

Rate = 6.2×10-4[0.4]²= 9.92×10-5M² min-1

7 0
3 years ago
describe how 250 cm³ of 0.2 mol/dm³ H2SO4 could be prepared from 150 cm³ of 1.0mol/dm³ stock solution of the acid​
Reptile [31]

Answer:

Explanation:

250 cm^3 of 0.2 moldm-3 H2SO4 can be prepared from 150cm^3 of 1.0 moldm^-3 by dilution.

150cm^3 of the 1.0 moldm^-3 stock solution is measured out using a measuring cylinder and transferred into a 250 cm^3 standard volumetric flask and made up to mark. The resulting solution is now 250cm^3 of 0.2 moldm-3 H2SO4.

5 0
2 years ago
What is the molar mass of a gas if 0.102 g of the gas occupies 0.070 L at STP? a. 32.6g / mol b. 28.2 g/mol c. 40.0g / mol d. 47
alexgriva [62]

Answer:

A. 32.6 g/mol

Explanation:

First convert the volume of gas to moles using the ratio 1 mol / 22.4 L at STP.

0.070 L • (1 mol / 22.4 L) = 0.00313 mol

Now divide the grams of gas by the moles of gas:

0.102 g / 0.00313 mol = 32.6 g/mol

8 0
2 years ago
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