4,347 Answered Questions for the topic Science

05/26/22

Compare and contrast the sensory and motor mechanisms between plants and animals using a Venn diagram.

Compare and contrast the sensory and motor mechanisms between plants and animals using a Venn diagram. give at least 3-5 each
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05/26/22

similarities in the sensory and motor mechanisms between plants and animals using a Venn diagram.

similarities in the sensory and motor mechanisms between plants and animals using a Venn diagram. give at least 3-5
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Science Algebra 2

05/25/22

If 500g of a radioactive substance are present initially and 4 years later only 200 g remain, how much of the substance will be present after 6 years.
I don't know how to get to the answer on this one.
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Science Math Chemistry

05/25/22

10 KClO3 (aq) + 3 P4 (s) --> 3 P4O10 (s) + 10 KCl (s) , what mass of P4O10 must be produced if 2.00x10^23 particles of KClO3 are also consumed
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Science Chemistry

05/24/22

which situation will have bigger error
Yo‎u are prep‎aring a b‎uffer with pH = 5. To prep‎are the bu‎ffer you dec‎ided to calcul‎ate ho‎w much so‎lid sodiu‎m ace‎tate you need to pre‎pare and vol of 1M a‎cetic aci‎d. You also decide‎d... more
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Science Chemistry

05/23/22

You need to prepare 100 mL of a 0.050 M solution of calcium chloride (CaCl2). How many moles of CaCl2 are needed? . How many grams of CaCl2 are needed?

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Science Chemistry

05/23/22

You are asked to make 500 mL of a 0.250 M sodium chloride (NaCl) solution. How many moles of NaCl would you need? How many grams of NaCl would you need?

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Science Chemistry

05/23/22

If 0.35 moles of NaCl was dissolved in enough water to make 200 ml of solution, what is the molarity? (NOTE: 1000 mL = 1 L)

For full credit you must list your givens, show the formula, all your work, and box/highlight your answer with correct units & significant figures!
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05/23/22

Calculating the solubility of calcium carbonate at set pH values
Calculate the solubility of CaCO3 Ksp=3×10^-9 in a buffered solution with a pH=6.82 and 8.98, please? The working behind this would be appreciated.
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05/23/22

Calculating the solubility of calcium carbonate at set pH values
Calculate the solubility of CaCO3 Ksp=3×10^-9 in a buffered solution with a pH=6.82 and 8.98, please? The working behind this would be appreciated.
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Science Chemistry

05/23/22

What is the molar absorptivity
Ferrous ion reacts with an unknown ligand X to form a bright red complex with λmax = 512 nm.Fe2+(aq) + 3X(aq) ↔ [FeX3]2+(aq)Standard solutions of [FeX3]2+(aq) of varying concentrations were... more
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Science Chemistry

05/23/22

Calculate the amount of dissolved oxygen

In the year 2025, NASA was able to find another planet (XXV) which may be able to sustain life. In order to determine if the planet’s water can sustain an earth organism’s life, Winkler method was... more
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Science Chemistry

05/23/22

amount of dissolved oxygen
In the year 2025, NASA was able to find another planet (XXV) which may be able to sustain life. In order to determine if the planet’s water can sustain an earth organism’s life, Winkler method was... more
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05/23/22

PDHPE revision for halfyearlys
Revision Questions:  Define Consumerism  Outline the between food allergy and food intolerance  List the steps of DRSABCD Three signs and symptoms of an allergic reaction  What are 7 nutritional... more
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05/21/22

Asteroid split lab

Background: The two tables below contain both the assumptions and parameters needed to evaluate if the plucky heroes in Armageddon could save Earth. In order to miss, Earth two conditions must... more
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05/21/22

Question about harmonic oscillation of a pendulum clock
A pendulum clock - is a clock that uses a pendulum, a swinging weight, as its timekeeping element.Pendulum's amplitude of oscillation decreases with the stretching of the spring. How does the... more
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Science Physics

05/19/22

A 9.5-L sample of helium gas stored at 25.0 C and 3.0 atm pressure is transferred to a 3.0 L tank and maintaned at s pressure of 5.0 atm
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Science

05/19/22

An aerosol can has an internal pressure of 10 atm at 28 C what temperature is required if the final pressure is 20 atm??
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05/17/22

How to get analytical wavelength with absorbance
Help with calculating the Analytical Wavelength, nm, of ff. Please show solution. Thank you!I. Analytical Wavelength DeterminationWavelength (nm)---- Absorbance400... more
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05/16/22

Which of the following organ systems are the main responsible in regulating other organ systems to maintain homeostasis, the maintenance of a stable internal environment?
Which of the following organ systems are the main responsible in regulating other organ systems to maintain homeostasis, the maintenance of a stable internal environment?a. muscular and... more
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05/16/22

Arrange the sequence of events that happen during an action of sensory and motor systems of animals. Assign numbers, 1 being the first event until 6 being the last.
Which of the following statements is incorrect for signal transduction pathway?a.Signal transduction pathway can be triggered by a hormone or an external stimulusb.The result of any signal... more
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05/14/22

The circulatory system

using this diagram http://2.bp.blogspot.com/_Obwvpc-KSC4/S7_cIBqIOKI/AAAAAAAAAZA/ASV_3vwTe00/s1600/system+circulation.JPGwrite down where the blood flows. Starting from the small intestines going... more
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05/12/22

Kinetic Theory states that all matter is made up of small particles (e.g. - atoms, molecules) that are in motion. Which of the following phenomena cannot be explained with Kinetic Theory?
1. When 4.0 g of magnesium reacts completely with 2.7 g of oxygen, 6.7 g of magnesium oxide is formed. When food coloring is added to water, it disperses throughout the container.2 A metal bar... more
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05/12/22

What would be the % calcium in a leafy vegetable extract applying 30.50 grams sample absorbing 9.8 mL of 0.0575 M EDTA solution?
I had a hard time solving this because our given formula is shown like this:% = V x M.F. x titer value / Wt(mg) ÷ MW x 100I do not know how to identify the M.F. and the titer value based on the... more
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05/12/22

What is the colour of the Metal-EDTA complex shown below?
MgIn + EDTA 🡢 MgEDTA + In
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