1A) 1 mole of Cr(NO3)3 is 238 g
10 g Cr(NO3)3 = 10/238
= 4.2×10-2 moles
B) 238 g Cr(NO3)3 contain 6.022×1023 molecules
238 g Cr(NO3)3 contain 13×6.022×1023 atoms.
2.5 g Cr(NO3)3 contain 13×6.022×1023/2.5 atoms
= 31.3×1023 atoms.
C) 241.86 g Fe(NO3)3 contain 6.022×1023 molecules
100 g Fe(NO3)3 contain 6.022×100×1023/241.86 molecules
= 2.49×1023 molecules
D) 184 g MgBr2 present in 3× 6.022×1023 atoms
1020 atoms are present in 184×1020/3×6.022×1023 atoms
= 0.01 atoms
please answer asap i will rate thumbs up 1- Calculate the following: A- Number of moles...
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1- Calculate the following: A- Number of moles in 10 gram of Cr(NO3)s. B Number of Atoms in 2.5 gram of Cr(NO3)s C- Number of molecules in 100 gram of Fe(NO3)s. D- Number of grams in 10 20 atoms of Fe(NO3)s. 2- Complete the following table: Element С н % Composition 71 Empirical Formula Element Н % Composition 65.4 5.5 29.1 Empirical Formula 29
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1- Calculate the following: A- Number of moles in 10 gram of Cr(NO3)s. B- Number of Atoms in 10 gram of Cr(NO3)s. C- Number of molecules in 10 gram of Cr(NO3)s. D- Number of grams in 10 atoms of Cr(NO3)s. 2. Find the % composition of all individuals in, KBrOn. %K= %Br= %0=
1- Calculate the following: A- Number of moles in 10 gram of AlBr3. B- Number of Atoms in 10 gram of Al(OH)3. C- Number of molecules in 10 gram of Cr(NO3)5. D- Number of grams in 10 10 atoms of AlBr3.
C A hewing b er of moles in 10 gram of CHNO3). B Number of Atoms in 25 gram of CHNO3). C Number of molecules in 100 gram of Fe(NO3). D- Number of grams in 10 % atoms of MgBr2. 2. Complete the following table: Element % Composition Empirical Formula Element . Composition empirical Formula
1- Calculate the following: A- Number of moles in 10 gram of Cr(NO3). B- Number of Atoms in 10 gram of Cr(NO3). C- Number of molecules in 10 gram of Cr(NO3). D- Number of grams in 10 atoms of Cr(NO3). 2. Find the % composition of all individuals in, KBrO. %K= %Br= %0= 3. How many gram of Oxygen is in 10 gram of C (NO3),? 4- Find the empirical formula of a compound with the following composition Hg33.3% S...
1- Calculate the following: A- Number of moles in 10 gram of AlBr3. B- Number of Atoms in 10 gram of Al(OH)3. C- Number of molecules in 10 gram of Cr(NO3)5. D- Number of grams in 10 10 atoms of AlBr3. 2- How many gram of Oxygen is in 10 gram of Zn(OH)2? 3- Balance the following chemical equations: A- O2--------------->O3 B-Na++Al(OH)3--------------> C-KI+Mg(NO3)2---------------> D-FeCl3+Ca3(PO4)2---------------> E- C4H12+O2---------------->CO2+H2O 4- Find Oxidized –Reduced and number of electrons: a) 3Ba+N2---------->Ba3N2 OX: RE: Electrons: b)...
1- Calculate the following: A- Number of moles in 10 gram of Cr(OH)s. B- Number of Atoms in 2.5 gram of Cr(OH)s.
vbe is .7
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1) For the figure below, β = 150, and VBE find vo 1 ΚΩ 100 ΚΩ o - 16V 200 ΚΩ
1- Calculate the following: A- Number of moles in 10 gram of Cr(NO3)s.
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(1) What are the reasons behind the need of modulation for radio transmission, i.e., why not directly transmit the original signal? Q2) A carrier signal with frequency f. Hz is double-sideband suppressed carrier (DSB-SC) amplitude modulated by a triangular shaped message signal, m(t), plotted below (Fig. Q2). The DSB-SC amplitude modulated signal is then passed from a band-pass filter with center frequency fc-Im and bandwidth 2fm where fm =...