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PSYCHO15rus [73]

3 years ago

13

The atomic number of silver-108 is 47. Its mass number is 108. How many protons and neutrons does silver-108 contain? A. 47 prot

ons, 61 neutrons B. 47 protons, 108 neutrons C. 61 protons, 47 neutrons D. 108 protons, 47 neutrons

1 answer:

pychu [463]3 years ago

3 0

option A :47 protons and 60*neutrons

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A 125g metal block at a temperature of 93.2 degrees Celsius was immersed in 100g of water at 18.3 degrees Celsius. Given the spe

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$\large \boxed{34.2\, ^{\circ}\text{C}}$

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$\begin{array}{rcl}\Delta T_{1} & = & -3.719\Delta T_{2}\\T_{\text{f}} - 93.2 ^{\circ}\text{C} & = & -3.719 (T_{\text{f}} - 18.3 ^{\circ}\text{C})\\T_{\text{f}} - 93.2 ^{\circ}\text{C} & = & -3.719T_{\text{f}} + 68.06 ^{\circ}\text{C}\\4.719T_{\text{f}} & = & 161.3 ^{\circ}\text{C}\\T_{\text{f}} & = & \mathbf{34.2 ^{\circ}}\textbf{C}\\\end{array}\\\text{The final temperature of the block and the water is $\large \boxed{\mathbf{34.2\, ^{\circ}}\textbf{C}}$}$

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