Chemistry

Chemistry, 26.07.2019 19:30, brooket30057

If you have 3.52 moles of baking soda (nahco3), then about how many molecules of baking soda fo you have? a) 3.45 x 10^24 b) 2.12 x 10^24 c) 6.02 x 10^23 d) 1.23 x 10^24

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Chemistry, 29.07.2019 16:30, funguy9198

Cooks use baking soda to make cakes light and fluffy. you might have used baking soda yourself. baking soda is nahco3. a 0.1 m solution of baking soda and water has a [h+] of about 4.0 x 10^-9. (you may prefer to think of the hydronium ion concentration, [h3o+], as 4.0 x 10-9.) write the formula for the calculation of ph, and then show each job as you calculate the ph of 0.1 m solution of baking soda.,

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Chemistry, 26.08.2019 03:30, leahelixabeth8973

Baking soda and vinegar can be used to model a volcanic eruption in a science demonstration because they bubble violently when mixed. what can be concluded about mixing vinegar and baking soda? baking soda and vinegar make a uniform mixture. vinegar and baking soda react to form a new gaseous substance. vinegar boils when it comes in contact with baking soda. baking soda has a lower density than vinegar.

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Chemistry, 01.09.2019 02:30, samsmith666

1. if you have a weighing scale you can directly determine the weight of the sample used in the experiment. if none, you can estimate the weight of the sample. from the baking soda container, get the net weight of baking soda and determine how many tablespoons of baking soda are in the container from the nutrition facts (serving size in teaspoons and no. of servings). get the weight of baking soda in 1/4 teaspoon. net weight of baking soda in one container (g): no of teaspoons of baking soda in one container: weight of 1/4 tsp of baking soda: __ 2. volume of co2 produced (ml): questions: 1. write a balanced chemical equation for the chemical reaction. 2. in this experiment, which reactant is limiting? 3. which reactant is in excess? 4. what is the molar mass of nahco3? 5. how many moles of nahco3 are there in 1/4 tsp of sample? 6. how many moles of co2 should be produced from the sample? 7. how many moles of co2 are actually formed? we can predict for the volume by using the ideal gas equation pv=nrt, where p-pressure, v=volume, n=number of moles, r-ideal gas constant, 0.0821 l-atm/mol-k, t-temperature. this equation can be rearranged to get the number of moles in a specific volume of gas: n=pv/rt; where p= 1 atm, v=volume of carbon dioxide produced converted to liters; r=0.0821 l-atm/mol-k; t=298 k (room temperature) 8. calculate for the percentage error of the experiment.

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Physics, 12.09.2019 03:30, anna4060

1. if you have a weighing scale you can directly determine the weight of the sample used in the experiment. if none, you can estimate the weight of the sample. from the baking soda container, get the net weight of baking soda and determine how many tablespoons of baking soda are in the container from the nutrition facts (serving size in teaspoons and no. of servings). get the weight of baking soda in 1/4 teaspoon. net weight of baking soda in one container (g): no of teaspoons of baking soda in one container: weight of 1/4 tsp of baking soda: __ 2. volume of co2 produced (ml): questions: 1. write a balanced chemical equation for the chemical reaction. 2. in this experiment, which reactant is limiting? 3. which reactant is in excess? 4. what is the molar mass of nahco3? 5. how many moles of nahco3 are there in 1/4 tsp of sample? 6. how many moles of co2 should be produced from the sample? 7. how many moles of co2 are actually formed? we can predict for the volume by using the ideal gas equation pv=nrt, where p-pressure, v=volume, n=number of moles, r-ideal gas constant, 0.0821 l-atm/mol-k, t-temperature. this equation can be rearranged to get the number of moles in a specific volume of gas: n=pv/rt; where p= 1 atm, v=volume of carbon dioxide produced converted to liters; r=0.0821 l-atm/mol-k; t=298 k (room temperature) 8. calculate for the percentage error of the experiment.

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