https://ejercicios-fyq.com/ Ejercicios Resueltos, Situaciones de aprendizaje y VÍDEOS de Física y Química para Secundaria y Bachillerato es SPIP - www.spip.net https://www.ejercicios-fyq.com/local/cache-vignettes/L144xH25/siteon0-da713.png?1758361862 https://ejercicios-fyq.com/ 25 144 https://www.ejercicios-fyq.com/Mass-volume-and-density-in-International-System-of-Units-3662 https://www.ejercicios-fyq.com/Mass-volume-and-density-in-International-System-of-Units-3662 2016-08-09T08:21:32Z text/html es F_y_Q Density Units conversion SOLVED <p>What are the units of mass and volume in SI? What will be the unit of density in SI?</p> - <a href="https://www.ejercicios-fyq.com/Units-and-magnitudes-285" rel="directory">Units and magnitudes</a> / <a href="https://www.ejercicios-fyq.com/Density" rel="tag">Density</a>, <a href="https://www.ejercicios-fyq.com/Units-conversion" rel="tag">Units conversion</a>, <a href="https://www.ejercicios-fyq.com/SOLVED" rel="tag">SOLVED</a> <div class='rss_texte'><p>What are the units of mass and volume in SI? What will be the unit of density in SI?</p></div> <hr /> <div <div class='rss_ps'><p>In the International Sytem of Units (SI), mass must be expressed in <b>kilograms (kg)</b> and volume in <b>cubic meters</b> <img src='https://www.ejercicios-fyq.com/local/cache-TeX/5c66e544df694ae13dfefeefba78211b.png' style="vertical-align:middle;" width="42" height="25" alt="\bf (m^3)}" title="\bf (m^3)}" />. Density is defined as mass per unit volume: <br/> <br/> <img src='https://www.ejercicios-fyq.com/local/cache-TeX/0dcdd48fd829627a950f44d1af4a798a.png' style="vertical-align:middle;" width="69" height="44" alt="\color[RGB]{2,112,20}{\bm{\rho = \frac{m}{V}}}" title="\color[RGB]{2,112,20}{\bm{\rho = \frac{m}{V}}}" /> <br/> <br/> Therefore, its unit will be <b>kilograms per cubic meter</b> <img src='https://www.ejercicios-fyq.com/local/cache-TeX/5b09563f2759cd6c0828568013fec082.png' style="vertical-align:middle;" width="95" height="25" alt="\bf (kg\cdot m^{-3})" title="\bf (kg\cdot m^{-3})" /></math></p></div> https://www.ejercicios-fyq.com/Converting-temperature-units-3469 https://www.ejercicios-fyq.com/Converting-temperature-units-3469 2016-01-31T06:09:43Z text/html es F_y_Q Units conversion Temperature units SOLVED <p>If my temperature is 312 K, do I have a fever?</p> - <a href="https://www.ejercicios-fyq.com/Units-and-magnitudes-285" rel="directory">Units and magnitudes</a> / <a href="https://www.ejercicios-fyq.com/Units-conversion" rel="tag">Units conversion</a>, <a href="https://www.ejercicios-fyq.com/Temperature-units" rel="tag">Temperature units</a>, <a href="https://www.ejercicios-fyq.com/SOLVED" rel="tag">SOLVED</a> <div class='rss_texte'><p>If my temperature is 312 K, do I have a fever?</p></div> <hr /> <div <div class='rss_ps'><p>To determine this, you need to convert the temperature from the absolute scale (Kelvin) to the Celsius scale: <br/> <br/> <img src='https://www.ejercicios-fyq.com/local/cache-TeX/c7413206e0ffc53ce64ba43e5986038b.png' style="vertical-align:middle;" width="219" height="23" alt="\color[RGB]{2,112,20}{\bm{T(^oC) = T(K) - 273}}" title="\color[RGB]{2,112,20}{\bm{T(^oC) = T(K) - 273}}" /> <br/> <br/> Applying the formula: <br/> <br/> <p class="spip" style="text-align: center;"><img src='https://www.ejercicios-fyq.com/local/cache-TeX/8b799cadd772027db355de4f54e6a032.png' style="vertical-align:middle;" width="245" height="28" alt="^oC = 312 - 273 = \fbox{\color[RGB]{192,0,0}{\bm{39\ ^oC}}}" title="^oC = 312 - 273 = \fbox{\color[RGB]{192,0,0}{\bm{39\ ^oC}}}" /></p> <br/> As you can see, <b>that temperature indicates a fever.</b></math></p></div> https://www.ejercicios-fyq.com/Converting-heat-units-3456 https://www.ejercicios-fyq.com/Converting-heat-units-3456 2016-01-18T05:38:44Z text/html es F_y_Q RESUELTO Units conversion <p>Convert to .</p> - <a href="https://www.ejercicios-fyq.com/Units-and-magnitudes-285" rel="directory">Units and magnitudes</a> / <a href="https://www.ejercicios-fyq.com/RESUELTO" rel="tag">RESUELTO</a>, <a href="https://www.ejercicios-fyq.com/Units-conversion" rel="tag">Units conversion</a> <div class='rss_texte'><p>Convert <img src='https://www.ejercicios-fyq.com/local/cache-vignettes/L128xH24/b342041a162653d7c0118f45d971c925-3620b.png?1733063095' style='vertical-align:middle;' width='128' height='24' alt="3.67\ kcal\cdot g^{-1}" title="3.67\ kcal\cdot g^{-1}" /> to <img src='https://www.ejercicios-fyq.com/local/cache-vignettes/L58xH24/8b864a21a4002033b2f6b42b799718cf-2732d.png?1733063095' style='vertical-align:middle;' width='58' height='24' alt="J\cdot g^{-1}" title="J\cdot g^{-1}" />.</math></p></div> <hr /> <div <div class='rss_ps'><p>The conversion factor between calories and joules is 1 cal = 4.18 J: <br/> <br/> <p class="spip" style="text-align: center;"><img src='https://www.ejercicios-fyq.com/local/cache-TeX/2ec2943e6724c5bd609476daebeb7420.png' style="vertical-align:middle;" width="471" height="52" alt="3.67\ \frac{\cancel{kcal}}{g}\cdot \frac{10^3\ \cancel{cal}}{1\ \cancel{kcal}}\cdot \frac{4.18\ J}{1\ \cancel{cal}} = \fbox{\color[RGB]{192,0,0}{\bm{1.534\cdot 10^4\ J\cdot g^{-1}}}}" title="3.67\ \frac{\cancel{kcal}}{g}\cdot \frac{10^3\ \cancel{cal}}{1\ \cancel{kcal}}\cdot \frac{4.18\ J}{1\ \cancel{cal}} = \fbox{\color[RGB]{192,0,0}{\bm{1.534\cdot 10^4\ J\cdot g^{-1}}}}" /></p> </math></p></div> https://www.ejercicios-fyq.com/Conversion-of-temperature-units-3448 https://www.ejercicios-fyq.com/Conversion-of-temperature-units-3448 2016-01-10T08:12:59Z text/html es F_y_Q Units conversion Temperature units SOLVED <p>Make the following conversions of temperature units: <br class='autobr' /> a) to . <br class='autobr' /> b) to . <br class='autobr' /> c) to . <br class='autobr' /> d) to .</p> - <a href="https://www.ejercicios-fyq.com/Units-and-magnitudes-285" rel="directory">Units and magnitudes</a> / <a href="https://www.ejercicios-fyq.com/Units-conversion" rel="tag">Units conversion</a>, <a href="https://www.ejercicios-fyq.com/Temperature-units" rel="tag">Temperature units</a>, <a href="https://www.ejercicios-fyq.com/SOLVED" rel="tag">SOLVED</a> <div class='rss_texte'><p>Make the following conversions of temperature units:</p> <p>a) <img src='https://www.ejercicios-fyq.com/local/cache-vignettes/L51xH17/1bb0f269b4414a38181354eb77a35397-76933.png?1733065821' style='vertical-align:middle;' width='51' height='17' alt="36\ ^oC" title="36\ ^oC" /> to <img src='https://www.ejercicios-fyq.com/local/cache-vignettes/L24xH15/860310ef243c22eb987b9e219fec12c9-e81c8.png?1733065821' style='vertical-align:middle;' width='24' height='15' alt="^oF" title="^oF" />.</p> <p>b) <img src='https://www.ejercicios-fyq.com/local/cache-vignettes/L51xH17/b492fe1d0d690b469a5964963e834de9-4a7a1.png?1733065821' style='vertical-align:middle;' width='51' height='17' alt="58\ ^oC" title="58\ ^oC" /> to <img src='https://www.ejercicios-fyq.com/local/cache-vignettes/L24xH15/860310ef243c22eb987b9e219fec12c9-e81c8.png?1733065821' style='vertical-align:middle;' width='24' height='15' alt="^oF" title="^oF" />.</p> <p>c) <img src='https://www.ejercicios-fyq.com/local/cache-vignettes/L61xH16/8f18480cc0cf6ab9037ae183e3cc60b2-f88ca.png?1733065821' style='vertical-align:middle;' width='61' height='16' alt="149\ ^oF" title="149\ ^oF" /> to <img src='https://www.ejercicios-fyq.com/local/cache-vignettes/L28xH42/8acff25cb9f5cd5974d9d139ec6cc9a4-9f580.png?1732975695' style='vertical-align:middle;' width='28' height='42' alt="^oC" title="^oC" />.</p> <p>d) <img src='https://www.ejercicios-fyq.com/local/cache-vignettes/L62xH16/85540f8048574ff64c42272460ee31cb-73a5e.png?1733065821' style='vertical-align:middle;' width='62' height='16' alt="374\ ^oF" title="374\ ^oF" /> to <img src='https://www.ejercicios-fyq.com/local/cache-vignettes/L28xH42/8acff25cb9f5cd5974d9d139ec6cc9a4-9f580.png?1732975695' style='vertical-align:middle;' width='28' height='42' alt="^oC" title="^oC" />.</math></p></div> <hr /> <div <div class='rss_ps'><p>a) <img src='https://www.ejercicios-fyq.com/local/cache-TeX/aae2794b24aeffd9f3f597ca6acf9466.png' style="vertical-align:middle;" width="440" height="28" alt="{\color[RGB]{2,112,20}{\bm{^oF = 1.8\cdot ^oC + 32}}} = 1.8\cdot 36 + 32 = \fbox{\color[RGB]{192,0,0}{\bm{96.8^oF}}}" title="{\color[RGB]{2,112,20}{\bm{^oF = 1.8\cdot ^oC + 32}}} = 1.8\cdot 36 + 32 = \fbox{\color[RGB]{192,0,0}{\bm{96.8^oF}}}" /> <br/> <br/> b) <img src='https://www.ejercicios-fyq.com/local/cache-TeX/a156984c9838536eb53a03dc0b0cdbea.png' style="vertical-align:middle;" width="452" height="28" alt="{\color[RGB]{2,112,20}{\bm{^oF = 1.8\cdot ^oC + 32}}} = 1.8\cdot 58 + 32 = \fbox{\color[RGB]{192,0,0}{\bm{136.4^oF}}}" title="{\color[RGB]{2,112,20}{\bm{^oF = 1.8\cdot ^oC + 32}}} = 1.8\cdot 58 + 32 = \fbox{\color[RGB]{192,0,0}{\bm{136.4^oF}}}" /> <br/> <br/> c) <img src='https://www.ejercicios-fyq.com/local/cache-TeX/9270da732e3f0dc2d4f2075c881b4c86.png' style="vertical-align:middle;" width="372" height="50" alt="{\color[RGB]{2,112,20}{\bm{^oC = \frac{(^oF - 32)}{1.8}}}} = \frac{149 - 32}{1.8} = \fbox{\color[RGB]{192,0,0}{\bm{65^oC}}}" title="{\color[RGB]{2,112,20}{\bm{^oC = \frac{(^oF - 32)}{1.8}}}} = \frac{149 - 32}{1.8} = \fbox{\color[RGB]{192,0,0}{\bm{65^oC}}}" /> <br/> <br/> d) <img src='https://www.ejercicios-fyq.com/local/cache-TeX/3c3358b7d009a5687eb9dc04462c18e2.png' style="vertical-align:middle;" width="384" height="50" alt="{\color[RGB]{2,112,20}{\bm{^oC = \frac{(^oF - 32)}{1.8}}}} = \frac{374 - 32}{1.8} = \fbox{\color[RGB]{192,0,0}{\bm{190^oC}}}" title="{\color[RGB]{2,112,20}{\bm{^oC = \frac{(^oF - 32)}{1.8}}}} = \frac{374 - 32}{1.8} = \fbox{\color[RGB]{192,0,0}{\bm{190^oC}}}" /></math></p></div> https://www.ejercicios-fyq.com/Magnitudes-and-units-volume-of-a-cube-3113 https://www.ejercicios-fyq.com/Magnitudes-and-units-volume-of-a-cube-3113 2015-04-25T03:59:01Z text/html es F_y_Q Magnitudes Units conversion SOLVED <p>The structure of a chemical compound is a cube. If the length of the edge of the cube is 500 pm, what will be the volume of the cube expressed in mL?</p> - <a href="https://www.ejercicios-fyq.com/Units-and-magnitudes-285" rel="directory">Units and magnitudes</a> / <a href="https://www.ejercicios-fyq.com/Magnitudes" rel="tag">Magnitudes</a>, <a href="https://www.ejercicios-fyq.com/Units-conversion" rel="tag">Units conversion</a>, <a href="https://www.ejercicios-fyq.com/SOLVED" rel="tag">SOLVED</a> <div class='rss_texte'><p>The structure of a chemical compound is a cube. If the length of the edge of the cube is 500 pm, what will be the volume of the cube expressed in mL?</p></div> <hr /> <div <div class='rss_ps'><p>1. Convert the length to cm: <br/> <br/> <img src='https://www.ejercicios-fyq.com/local/cache-TeX/fab39a19fb71ad1e78a24a2a3b6287ed.png' style="vertical-align:middle;" width="359" height="54" alt="L = 500\ \cancel{pm}\cdot \frac{10^{-12}\ cm}{10^{-2}\ \cancel{pm}} = \color[RGB]{0,112,192}{\bm{5\cdot 10^{-8}\ cm}}" title="L = 500\ \cancel{pm}\cdot \frac{10^{-12}\ cm}{10^{-2}\ \cancel{pm}} = \color[RGB]{0,112,192}{\bm{5\cdot 10^{-8}\ cm}}" /> <br/> <br/> 2. Formula to calculate the volume of the cube: <br/> <br/> <img src='https://www.ejercicios-fyq.com/local/cache-TeX/89cc26ae9c2d1c29e8c5f2185526cab3.png' style="vertical-align:middle;" width="75" height="20" alt="\color[RGB]{2,112,20}{\bm{V = L^3}}" title="\color[RGB]{2,112,20}{\bm{V = L^3}}" /> <br/> <br/> Substitute the values and calculate: <br/> <br/> <p class="spip" style="text-align: center;"><img src='https://www.ejercicios-fyq.com/local/cache-TeX/ebc74039953539ddd76986fdaef3acb7.png' style="vertical-align:middle;" width="458" height="49" alt="V = (5\cdot 10^{-8})^3\ \cancel{cm^3}\cdot \frac{1\ mL}{1\ \cancel{cm^3}} = \fbox{\color[RGB]{192,0,0}{\bm{1.25\cdot 10^{-22}\ mL}}}" title="V = (5\cdot 10^{-8})^3\ \cancel{cm^3}\cdot \frac{1\ mL}{1\ \cancel{cm^3}} = \fbox{\color[RGB]{192,0,0}{\bm{1.25\cdot 10^{-22}\ mL}}}" /></p> </math></p></div>