Marlena created a table of values ​​that represent the height in feet, h(t), of a coconut that falls on the hard ground with a height of 0 feet, harvested for t seconds. Assume the coconut does not bounce. Which statement is true? The starting height of (2023)

Mathematics, 21.06.2019 14:50

I already have my work written! but my teacher said that numbers 2 and 3 are messed up! I'll give you the most points because you said "good start on this activity! for full credit please resubmit and try again if mass is conserved for reactions #2 and #3, I know who got it!" Mass Conservation Activity Worksheet Instructions: Observe and discuss the interactions between the substances represented on the slide show. compare the properties of substances before and after each interaction. submit your completed worksheet for evaluation. data table In the table below, record your observations before and after the interactions, and explain how mass was conserved. describe changes in properties that show that a chemical reaction has taken place. the first line is an example. 3 observations before the interaction observations after the interaction how was mass conserved? proof of a chemical reaction example: sugar + heat sugar is small white particles in a bunch. the heat is not seen, but is implicit in the heat source. the pile of sugar in the pan has a mass of 100 grams. there is a solid light brown mass in the bottom of the pan. has a mass of 100 grams. the mass of sugar is the same in the melted form and in the form of a solid crystal. there was no chemical reaction. sugar has not changed its composition. just melted the melting point is a physical property, and this is a physical change. steel wool + oxygen (fire) steel wool is like cloth, but it is electric and has a mass of 6 grams, until you touch the heat. When heat is applied to the steel wool, the heat like that from the batteries attracts the steel wool, it begins to heat up until it is hot enough to start a fire. well mass is neither created nor destroyed it depends on the mass of a substance i will say there is a chemical reaction by how fire burns and reacts if it was a sugar stove like the example says it just melted then it is the only physical change, which is why I consider steel, wood, and fire to be basically a chemical reaction and change. egg + soft-boiled eggs are simple and are from chickens, some eggs may be white or brown but there is no difference, an egg weighs about 40 grams or more. an egg carries a substance that weighs more than the egg. when the egg is broken, the egg weighs less than before it weighs at least 5 or 6. its mass changes because it was originally from an eggshell that carried it, with that, the shell weighs less, and the egg is now being cooked and heated, which should make the total weight of the egg about 8 or 10 grams. This would be called a physical change and would not be called a chemical change. water + heating water is a normal substance that can be drunk or boiled and for all kinds of things, but let's say we have a glass of water, which is about 60 grams. if we take the water and put it in the saucepan, it would still be the same number of grams because we just pour it into a cup that weighs about the same as a saucepan. now let's say if we boil the water, when we boil the water for a long time, it starts to get hot and soon it evaporates into steam or smoke, so it reduces to about 20 to 30 grams. the water is now heating up which means it will boil and drop the weight which is now 20 to 30. This would be called a thermal change and it would be called a physical change due to evaporation of the water. zinc is like a stone weighing about 10 grams. hydrogen chloride weighs at least 6 grams. the hydrogen becomes bubbly after interacting with the zinc, which should now weigh about 4 or 3 grams. are equal to the same amount of mass, both are products of mass. It's a chemical because, for example, think about paint and vinegar, we all know it bubbles up and it's like a volcano, so it would be called a chemical change. sodium hydroxide + copper sulfate sodium hydroxide is clear and copper sulfate is blue, both have different weights. blue is 57 grams and clear is 0 grams. the only thing that changes is that it is a different color. Also, sodium sulfate now weighs 47 grams and copper weighs 20 now that they have interacted. they look the same after being together. I will say that this is a chemical change, as well as a chemical reagent.

Answers: 3

Mathematics, 21.06.2019 17:30

Choose the number sentence that shows the identity property of addition. The. 122 = 61 + 61b. 62 = 1 + 61 c. 61 = 0 + 61

Answers: 1

Mathematics, 21.06.2019 19:00

What is not true about kl and mn? what is mn (Show)

Answers: 2