Berapa banyak kalor yang harus diserap oleh es dengan massa m=500 g pada suhu -20 c untuk mengubah keadaan nya ke cair pada suhu 25 c diketahui air =4.18j/g c es= 2.1 j/ g c kalor lebur es =334 j/g

I believe that the amendments won’t be changed. I believe this because the amendments have been the same forever and there is no reason to change them now. People believe that because the president keeps making new laws the amendments should be changed… Wrong! They should not have to be altered to fit all the new laws that the president is making.

Answered by lcncjc123 | 2024-06-10

While there are arguments for changing amendments to reflect societal needs, the U.S. Constitution has historically shown stability. The rigorous amendment process and the necessity for broad consensus make frequent changes unlikely. Therefore, it seems plausible that our amendments will stay the same for now.
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Answered by lcncjc123 | 2025-06-19

Jawaban:240.250 J atau 240,25 kJPenjelasan:Untuk mengubah 500 g es -20 °C menjadi air bersuhu 25 °C, ada 3 tahap yang perlu dilalui:Memanaskan es hingga titik lebur.Memanaskan es hingga berubah fase menjadi airMemanaskan air hingga mencapai 25 °C.Maka, kalor yang diperlukan adalah total dari kalor pada tiga fase tersebut.[tex]\begin{aligned}Q &= Q_\text{es}+Q_\text{lebur}+Q_\text{air}\\&= mc_e\Delta T_e + mL + mc_a\Delta T_a\\&= \left(500 \text{ g}\right) \cdot \left(2{,}1 \text{ J/g}\ {}^\circ \text{C}\right) \cdot \left(0 - (-20)\right)^\circ \text{C} + \left(500 \text{ g}\right)\left(334\text{ J/g}\right) \\ &\qquad + \left(500 \text{ g}\right) \cdot \left(4{,}18 \text{ J/g}\ {}^\circ \text{C}\right) \left(25-\right)^\circ \text{C}\\&= 21.000+167.000+52.250\\&= 240.250 \text{ J}\end{aligned}[/tex]Maaf kalau salah, semoga cukup membantu.

Answered by AbdullahAlFaqir | 2025-07-18