Questions asked
12. Using the information in the preceding information box, calculate the enthalpy of reaction for the reaction of nitrogen dioxide with water represented by the following equation. 3 NO$_2$(g) + H$_2$O(l) →2 HNO$_3$(aq) + NO(g) Δ$_rH$=? Answer (4 Marks) 2 NO(g) + O$_2$(g) →2 NO$_2$(g) Δ$_rH$= -173 kJ 2 N$_2$(g) + 5 O$_2$(g) + 2 H$_2$O(l)→4 HNO$_3$(aq) Δ$_rH$= -255 kJ N$_2$(g) + O$_2$(g) →2 NO(g) Δ$_rH$= +181 kJ
A 535 pF capacitor is charged to 105 V and then quickly connected to a 135 mH inductor. Determine the frequency of oscillation. Determine the peak value of the current. Determine the maximum energy stored in the magnetic field of the inductor.
7. Coulomb's equation is used for determining the force between 2 charged bodies separated by a distance $F = k \frac{q_1 q_2}{r^2}$
What is the atomic number of 10^B when two electrons are removed from the atom?
Q94. Consider the following circuit. What is the value of current I in the circuit shown?
1. Given Three Matrices A and B and C as follows $\begin{bmatrix} -1 & 2 & 1 \\ 0 & -3 & 2 \\ 0 & 1 & -4 \end{bmatrix}$ $A =$ $\begin{bmatrix} 1 & -2 & 0 \\ 0 & -1 & 2 \\ 4 & 3 & -2 \end{bmatrix}$ $B =$ $\begin{bmatrix} -2 & 0 & 0 \\ 0 & -2 & 0 \\ 0 & 0 & -2 \end{bmatrix}$ $C =$ Try to simplify the following statements by the provided information and then calculate the following matrix operations by HAND. {hint: if X and Y are matrices we have: $(X^T)^{-1} = (X^{-1})^T$, $(XY)^T = Y^TX^T$, $(XY)^{-1} = Y^{-1}X^{-1}$, $(X^T)^T = X$} a. $(B^T(A^T)^{-1})^T$ b. $B((AB)^{-1})^2A$ c. $((AB)^{-1})^{10}C^9(AB)^9$
When a loop is flamed in a microbiology lab, dry heat. O dehydrates cells, interfering with metabolic reactions O dehydrates cells, increasing the stability of some protein conformations O oxidizes cells, burning them to ashes 4
Find a vector x whose image under T, defined by T(x) = Ax, is b, and determine whether x is unique. Let $A = \begin{bmatrix} 1 & 2 & 5 \\ 3 & 8 & 17 \\ 0 & 1 & 1 \\ -3 & -7 & -16 \end{bmatrix}$ and $b = \begin{bmatrix} 9 \\ 31 \\ 2 \\ -29 \end{bmatrix}$. Find a single vector x whose image under T is b x = \boxed{ }
Which association concerning structures in the human male is mismatched? Multiple Choice testes-produce sperm vas deferens-carries urine prostate gland-seminal fluid urethra-conducts sperm
2. In a Ideal Rankine cycle, the steam throttle condition is 4.10 MPa and 440 $^\circ$C. If turbine exhaust is 0.105MPa, determine the steam rate in kg/kW-Hr. Draw the Ts diagram.