Answer:
1)alkali metals
2)1g/ml
3) mercury
Explanation:
<em><u>HEY!</u></em><em><u>!</u></em><em><u>^</u></em><em><u>^</u></em>
<em><u>have </u></em><em><u>a </u></em><em><u>good </u></em><em><u>day</u></em>
<em><u>thank </u></em><em><u>me </u></em><em><u>later</u></em>
<em><u>carryonlearing </u></em>
Mixtures are made up of 2 or more pure substances. pure substance is just its self and a mixture is multiple substances.
HCl is considered as polar molecule and that is incorrect answer, The choices provided are A) HCl , B) CH₄ , C) H₂O, D) NH₃
And the correct answer is : B) CH₄
In case of H₂O and NH₃ the high difference in electronegativity between nitrogen or oxygen and hydrogen make the bonds acquire partial charges and become polar while in case of CH₄ the difference in electronegativity between carbon and hydrogen is only 0.4 so it considered as non-polar bond
also carbon connected from all directions with Hydrogens
Answer: The volume of 0.235 M 
needed to titrate 40.0 mL of 0.0500 M 
is 8.51 ml
Explanation:
To calculate the volume of acid, we use the equation given by neutralization reaction:
where,
are the n-factor, molarity and volume of acid which is
are the n-factor, molarity and volume of base which is
We are given:
Putting values in above equation, we get:
Thus volume of 0.235 M needed to titrate 40.0 mL of 0.0500 M is 8.51 ml
