Solution : $ 0.5 = 4.5/(4.5 + n),$ => $n = 4.5.$

Solution : Mole fraction is the ratio of moles of solvent and total number of moles of solution, =&g...

Solution : The x intercepts are $\alpha$ and $\beta$ the axis of symmetry is $x= \large\frac{\alpha ...

Solution : $x(x+2)=255$=> $x^2+2x=255$=> $x^2+2x-255=0$$x= \large\frac{-2 \pm \sqrt{4 + 1020}}...

Solution : $-x^2+4x-7=5x-4$$-x^2-x-3=0$=> $b^2-4ac=(1)^2-4(1)(3)$$\qquad= 1-12 <0$Hence no sol...

Solution : $y=2(x+1)^2+1$$y= 2(x+1)^2+3$

Solution : When $x=0,y=2(0)+6(0)-3$ $y=-3$

Solution : For a quadratic function in standard form, $y=ax^2+bx+c$ , the axis of symmetry is a vert...

Solution : $x^2$-(sum of the roots)x +product of the roots=0Sum of the roots $=-2+\sqrt 3 -2-\sqrt 3...

Solution : $b^2-4ac=(-5)^2-4 \times 6 \times -6$$\qquad=25+144 >0$

Solution : $3x^2+2=-7x$=> $3x^2+7x+2=0$=> $(3x+1)(x+2)=0$=> $x=\large\frac{-1}{3}$$,x=-2$

Solution : $5-(x+2)-(x+2)^2=f(g(x))$$\qquad= 5-x-2-x^2-2x-4$$\qquad= -x^2-3x-1$

Solution : Consider the top and bottom layers. One-sixth of each of the 12(=6×2) atoms located at th

Solution : Coordination number is the number of atoms that are in direct contact of any particular a...

Solution : $ d = \large\frac{(4 \times 58.5)}{[6.02 \times 10^{23} \times (500 \times 10^{-10})^3 ]}...

Solution : Density = Mass of unit cell/Volume of unit cell$ 8.93 = (4 \times 63.5)/(a_3 \times 6.02...

Solution : Crystallisation is based on the difference in the solubility of the compound and the impu...

Solution : Sublimation, crystallisation, distillation, differential extraction and chromatography a...

Solution : The formula to calculate molarity isIn this case, the solute is $7.62$ grams of $MgCl_2$....

Solution : $N^{\circ}$ moles =$\large\frac{ grams}{mw} = \frac{100}{58.5}$$ = 1.70$$1.70:1500=m:1000...

Solution : By rembering that $M_iV_i = M_fV_f$ we have that$(x)\; (1) = (100)(0.2)$$x = 20 ml$

Solution : the moles present in 20 gr of NaOH are:moles = gr/mw = 20/40 = 0.5 molesSince molarity is...

Solution : High alkaline water leads to caustic embrittlement and deposition of precipitates and slu...

Solution : $HCO_3^–$ and $OH^{–}$ together combines to form $CO_3^{2-}$ ions. Therefore, this situat

Solution : The normal boiling point of a liquid is the temperature at which it boils when the extern...

Solution : The boiling point and molar heat of vaporisation is dependent on the strength of the inte...

Solution : The process of distillation is used for the liquids having sufficient difference in their...

Solution : Porcelain pieces are put into the distillation flask to avoid bumping of the solution due...

Solution : Alkalinity is a measure of the ability of water to neutralize the acids. Measuring alkali...

Solution : In case of water and glass, we get a concave meniscus because the adhesive force between ...

Solution : The molar heat of fusion of water is 6.01 kJ/mol. The molar heat of fusion refers to the ...

Solution : The melting point and freezing point of mercury is 234.32 kelvins $(−38.83 ^{\circ}C\; or

Solution : https://clay6.com/mpaimg/ca.jpg

Solution : Number of revolution per second $=\large\frac{V_n}{2 \pi t_n}$Where $r_n=0.53\times \larg...

Solution : $2(x+3)^3+1$$\qquad=2[x^3+9x^2+27x+27]+1$$\qquad= 2(x^3+9x^2+27x+27)+1$$\qquad= 2x^3+18x^...

Solution : $g(f(x))=(2x-3)^2-3(2x-3)+2$$\qquad= 4x^2-12x+9+2$$\qquad= 4x^2-18x+20$

Solution : $x^2+11x-13=0$=> $x= \large\frac{-11 \pm \sqrt{11^2-4x-13}}{2}$$\qquad= \large\frac{-1...

Solution : $y= \large\frac{1}{2}(x+2)^2$touches the x axis at -2when $x=0$ $y= \large\frac{1}{2}$$(2...

Solution : Let the number of person be x let the cost per person be yHence $xy=160=> y= \large\fr...

Solution : $x^2-x-18=x-3$=> $x^2-2x-15=0$=> $(x-5)(x+3)=0$=> $x=5\;or\;x=-3$

Solution : Axis is symmetry is $x=+1$The other x intercept is 3$y= a(x+2)(x-3)$When $x=0,y=16$ $16=a...

Solution : $2(x^2-x-12)=0$=> $2(x^2-4x+3x+12)=0$=> $2[(x(x-4)+3(x-4)]=0$=> $2(x-4)(x+3)=0$

Solution : given vertex is $(2,4)$ We can see that the curve passes through the origin (0,0)$\theref...

Solution : $\large\frac{1}{2}$$x(15-x)=30$=> $x(15-x)=60$=> $15x-x^2=60$=> $x^2-15x+60=0$$x...

Solution : Two different pure substances have different melting points. All the other options are co...

Solution : The purity of compound is confirmed by its melting point and boiling point, chromatograph...

Solution : Use of soaps and detergents as cleansing agents, molecular structure can be elucidated by...

Solution : On increasing the temperature, the surface tension of the liquid decreases. It is inverse...

Solution : If two drops encounter each other, they tend to coalesce into a large drop. All the other...

Solution : Shapes of drops of liquid are spherical because of surface tension as it reduces the surf...