- How are scientists perceived in the general population?

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What is the minimum vb can be where M will the circle complete a full rotation? 4Cr + 3O2 -> 2Cr2O3 How Many Moles of chromium are needed to react with 45.6 g of oxygen? My answer was 1.9molCr but Idk if its right? How can I solve this? If F(t)=4t+7
find F(h+3)-F(3)/h? How much a cd can use? What happens if we remove heat from water at zero degree Celsius? Does the temperature change? Explain.?