CHEMISTRY COLLEGE

Jesim wants to help Nancy understand the movement that happens during one Earth year, Jassim holds a small globe representing Earth, and Nancy holds a large ball representing the Sun. What should Jessim do to showNancy what happens during one Earth year?
Jessim should not move except to slowly spin the globe
Jesim should slowly spin the globe and walk away from Nancy
Jessim should have Nancy walk around him while spinning the ball
Jessim should spin the globe quickly while walking in a circle around Nancy

Answers

Answer 1

Answer: the answer is D jessim should spin the glove quickly while walking in a circle around nancy.

Answer 2

Answer:

Answer:

The answer is D jessim should spin the glove quickly while walking in a circle around nancy.

Explanation:

Related Questions

Molecular compounds result from covalent bonding which are called _______.This is for high school physical science
What is the mass in grams of 1.9×1023 atoms of lead?
About 40 different substances called organophosphorus compounds are registered in the United States as insecticides. They are considered less damaging to the environment than some other insecticides because they breakdown relatively rapidly in the environment. The first of these organophosphorus insecticides to be produced was tetraethyl pyrophosphate, TEPP, which is 33.11% carbon, 6.95% hydrogen, 38.59% oxygen, and 21.35% phosphorus. It has a molecular mass of 290.190. What is the molecular formula for TEPP?
5. As a sample of matter is heated, its particles *O A are unaffectedO B. move more quicklyO C. move more slowlyD. stop moving
Which one of these could be in the unknown anion "X" in this acid: H3XcarbonatefluoratenitrogennitriteCould you explain how to find this? The process?

Give an example of an element and an example of a compound.

Answers

Answer:

an element is a atom like titanium and a compound is like a water, glucose, alcohol and salt

Explanation:

the titanium is a element and water, glucose, alcohol, and salt those are a compound

The chemical reaction for the formation of syngas is: CH4 + H2O -> CO + 3 H2 What is the rate for the formation of hydrogen, if the rate of the formation of carbon monoxide is 0.35 M/s ? g

Answers

Answer : The rate for the formation of hydrogen is, 1.05 M/s

Explanation :

The general rate of reaction is,

$aA+bB\rightarrow cC+dD$

Rate of reaction : It is defined as the change in the concentration of any one of the reactants or products per unit time.

The expression for rate of reaction will be :

$\text{Rate of disappearance of A}=-(1)/(a)(d[A])/(dt)$

$\text{Rate of disappearance of B}=-(1)/(b)(d[B])/(dt)$

$\text{Rate of formation of C}=+(1)/(c)(d[C])/(dt)$

$\text{Rate of formation of D}=+(1)/(d)(d[D])/(dt)$

$Rate=-(1)/(a)(d[A])/(dt)=-(1)/(b)(d[B])/(dt)=+(1)/(c)(d[C])/(dt)=+(1)/(d)(d[D])/(dt)$

From this we conclude that,

In the rate of reaction, A and B are the reactants and C and D are the products.

a, b, c and d are the stoichiometric coefficient of A, B, C and D respectively.

The negative sign along with the reactant terms is used simply to show that the concentration of the reactant is decreasing and positive sign along with the product terms is used simply to show that the concentration of the product is increasing.

The given rate of reaction is,

$CH_4+H_2O\rightarrow CO+3H_2$

The expression for rate of reaction :

$\text{Rate of disappearance of }CH_4=-(d[CH_4])/(dt)$

$\text{Rate of disappearance of }H_2O=-(d[H_2O])/(dt)$

$\text{Rate of formation of }CO=+(d[CO])/(dt)$

$\text{Rate of formation of }H_2=+(1)/(3)(d[H_2])/(dt)$

The rate of reaction expression is:

$\text{Rate of reaction}=-(d[CH_4])/(dt)=-(d[H_2O])/(dt)=+(d[CO])/(dt)=+(1)/(3)(d[H_2])/(dt)$

As we are given that:

$+(d[CO])/(dt)=0.35M/s$

Now we to determine the rate for the formation of hydrogen.

$+(1)/(3)(d[H_2])/(dt)=+(d[CO])/(dt)$

$+(1)/(3)(d[H_2])/(dt)=0.35M/s$

$(d[H_2])/(dt)=3* 0.35M/s$

$(d[H_2])/(dt)=1.05M/s$

Thus, the rate for the formation of hydrogen is, 1.05 M/s

After mixing the solutions in a separatory funnel, the stopper should be ______ and the liquid should be _______ and the layers allowed to separate. When you get close to the interface between the layers, ______ the funnel and turn over _______ heat up until the first layer is collected get eye level with to collect the second layer. _______

Answers

Answer:

Hence,

1) removed

2) drained through the stopcock

3) get eye level with

4) slow the draining

5) switch to a new flask

Explanation:

After mixing the solutions in a separatory funnel, the stopper should be removed and the liquid should be drained through the stopcock, and the layers allowed to separate. When you get close to the interface between the layers, get eye level with the funnel and turn over to slow the draining heat up until the first layer is collected. Switch to a new flask get eye level with it to collect the second layer.

Give an example of experimental bias

Answers

Answer:

chongus because he's the only good one

Which issue is a limitation of using synthetic polymers

Answers

The main issues of using synthetic polymers include toxicity poor biocompatibility etc. Synthetic polymers stay non-degradable for ling time and make the surface polluted.

What are synthetic polymers?

Natural polymers are naturally made substances such as cellulose, starch, glycogen etc. Polymers made by man are called synthetic polymers. Synthetic polymers are diverse and are made through several polymerization techniques.

PVC, polyethylene, polyesters Teflon etc. are very common polymers in daily life. A major class of synthetic polymers include plastics which are major pollutants nowadays.

Most of the synthetic polymers are non-biodegradable and will cause landfill issues. Some them are toxic in nature and might cause several health issues. Blending them with biodegradable polymers is a solution for this.

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Answer: As trash, Synthetic Polymers are not biodegradable. Landfills can easily fill up with synthetic polymers. Plastics can be made into different products. Recycling synthetic polymers is costly.

Explanation: Hope this helps in any way possible!

15. List the substances A-E in order from most dense to least dense based on the facts provided.Please write the letters in the spaces provided below.
Substance A: 8.2 g/cm3

Substance B: 3.5 cm and 30.0g

Substance C: 10.0g and 40mL

Substance D: 0.5 g/cm3

Substance E: 2.0cm by 3.0cm by 1.0cm and 4.0g

Most Dense_ _ _ _ _
Least Dense

Answers

The order of density of substances ranging from most dense to least dense is :substance B>substance A>substance E>substance C>substance D.

What is density?

It is a ratio of substance's mass per unit of volume.Symbol most commonly used for density is р.The SI unit of densityis kilogram per cubic meter .It explains how tightly a material is packed together.

There are2 types of density :1)absolute density 2) relativedensity.Absolute density is the massof any substance per unit volume and relative density is the ratio of density of a substance to the density of a given reference material.

Reference material used forrelative density is water.The instrument used for measuring density or relative density of liquids is hydrometer. Densityis measured at constant temperature and pressure.

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Answer:

So 1st it is B then D then E then a then C

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An ice cube melts in the hot sun. Is this exothermic or endothermic andwhy?

Question 1Ernest Rutherford completed his famous gold foil experiment in 1911. In this experiment, alpha particles were fired at a thin sheet of gold foil. He observed that most of the alpha particles passed straight through the gold foil unimpeded, but a small number of alpha particles were deflected. Which of the following conclusions about atomic structure were made from Rutherford’s gold foil experiment?