Chemistry

What class of lever is shown below?Question 3 options:First Class LeverSecond Class LeverThird Class LeverForth Class Lever
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I am having the worst day ever, Someone please cheer me up. :( I'll mark you as brainiest. :(
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When a hurricane approaches land, people living directly on thecoast should always evacuate when told to do so by authorities.
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Match each term in the first column with an example in the second column. On a sheet of paper, write the letter of the answer.1. physical property2. chemical propertyA ability to burn3. solid4. liquidB rust appears on a nail C a puddle freezes5. physical change6. chemical changeD substance that has a definite shape and volumeE temperature or densityF substance that has a definite volume, but no definite shape
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Between what two elements does hydrogen bonding occur?
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Sounds with great amplitude are ____________
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Octane has a density of 0.703 g/ml. Calculate the mass of CO2(g) produced by burning onegallon of octane. There are 3.79 liters to one gallon.
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WILL GIVE BRAINLIESTWhich model provides more information-a chemical formula or a sketch of the moleculelike in the structural formula? Explain your reasoning.
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has anyone done 4.3.4 Practice: Mixtures of Matter...I need help :/
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How can I increase the time over which the collision occurs?
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Which law states that energy cannot be created or destroyed, but can change from one form to another?- the law of conservation of energy- the law of conservation of matter- the law of gravity - the law of motionanswer - (the law of conservation of energy)
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What type of chemical reaction is Al + FeO --> Al2O3 + Fe
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Which two changes of state can occur when a substance gains thermal energy A sublimation b depositation c condensation and d vaporization
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Which of these challenges is unique to the process of designing prostheses as opposed to engineering other technologies?- Knowing how a material will fail- Using the engineering process- Identifying a need for the technology- Predicting how a technology will interact with human tissue
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Chlorine has 7 valence electrons. Describe the type of bond that sodium would havewith chlorine. Write the chemical formula of the compound these two elements would form together. (i figured it out nvm)
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which is the first news paper of Nepal
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one difference between a chemical formula and a chemical equation is that the chemical equation shows:
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A solution that contains 3 grams of solute dissolved in 100 millimeters of solution is:a) 3% m / mb) 3% m / vc) 10% m / v
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Compare the structure and bonding of the three compounds: carbon dioxidemagnugum ondosilicon dioxide(6 mark question)
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Which of the following is unlikely to form a compound?a. S b. Hc. Kd. Ard. Si
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WILL BRAINLIST! NEED ANSWER! Why is it important to recycle metals?A. to maintain sustainabilityB. to create more tailingsC. to make sure ore remains renewableD. to make it easier to extract ore from the ground
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Balance the equation:
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a meter is defined as 100. cm. How many significant digits are there in the value
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Gold has a specific heat of 0.126 J/g.C. Copper has a specific heat of 0.386 J/g C. Which of the two metals would require moreheat energy to raise the temperature of the same weight of metal by 10.5C?
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