4,374 Answered Questions for the topic Science

Science Geology

03/13/21

pls help (read desc)
In the Galapagos Islands, finches on different islands have beaks of different shapes, so they can gather the food that grows on the island where they live. Their beaks are examples of which of the... more
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Science Chemistry

03/12/21

Ionic Molecules (PLS HELP)

Give the formula for the Ionic compound that would form from combining the following atoms. 1.) Mg, O 2.) B, Te3.) K,C4.) C,P5.) Al, O 6.) Li, F7.) Ca, B8.) Sr, I 9.) Ga, S 10.) Na, Po
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03/12/21

4. Plants heterozygous for a characteristic that determines petal colour were crossed (AB × AB)
The A allele represents a red phenotype, and the B allele represents a white phenotype. Work out the genotypic numbers if:a. This is an F1 cross. The results will be one AA to two AB to one BB. b.... more
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03/10/21

Order (from most kinetic energy to the least) justify your answer

A 5 kg cat is sitting still on a countertop, watching a fish in a fish tank. The 0.5 kg fish is slowly swimming at 0.1 m/s in the tank. The owner of the pets sees the cat watching and fish and... more
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03/10/21

What is the value of the equilibrium constant, Kc, at this constant temperature?
When 1.50 mol of CO2 and an excess of solid carbon are heated in a 20.0 L container to a high constant temperature, the equilibrium concentration of CO is 0.0776 M.C(s) + CO2(g)  ⇆ 2 CO(g)What is... more
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Science Math Physics

03/10/21

Three resistors (10, 15, and 20 ohms) are connected in parallel to a 24 V source.
Three resistors (10, 15, and 20 ohms) are connected in parallel to a 24 V source. Show all work for credit.What is the voltage drop across each resistor?What is the current through each... more
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Science Math Physics

03/10/21

Three resistors (5, 10, and 15 ohms) are connected in series to a 12 V source.
Three resistors (5, 10, and 15 ohms) are connected in series to a 12 V source. All work must be shown.What is the equivalent resistance of the circuit?What is the current through the battery?What... more
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Science Chemistry

03/09/21

Half-Lives and Radioactivity
50.0mg of potassium-45 was isolated in pure form. After one hour, only 3.125mg of the radioactive material was left. What is the half-life of potassium-45?
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03/08/21

. If you know a fluid balance chart is accurate, would it concern you if a patient appeared to be 1L positive each day. Give the reason for your answer
i need help with this question
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03/08/21

How much water do we lose per day?
i need help with this question
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03/08/21

State the 3 ways by which we acquire water
i need help with this question
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03/08/21

1. Explain why some substances are secreted from the blood into the filtrate as it passes along the tubule and why does this vary.
i need help with this question
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Science Chemistry

03/07/21

How do you tell if something is solid/liquid/gas in a single and double displacement reaction?
I feel like I kind of know this but just wanted someone to answer so that I can know for sure; Thanks!
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03/07/21

Difference between aqueous and a liquid?

In the reaction sodium hydroxide+sulfuric acid, the balanced equation I got isNaOH(aq)+H2SO4(aq)-->Na2SO4+HOH or NaOH(aq)+H2SO4(aq)-->Na2SO4+H2OI don't understand how to write the net ionic... more
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03/07/21

Is sweat considered to be isotonic, hypertonic, or hypotonic?
Also, a patient lost 4000mL through sweat and drank 22500mL red bulls before going to work in the sun, and would his blood be considered isotonic,hypertonic,or hypotonic?
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03/07/21

Is human sweat considered to be hypertonic, hypotonic, or isotonic? (remaining follow up questions and more info under)
Patient reports urinating only once in the past 6 hours. Urine produced was very dark colored. Patient is irritable and confused (unsure of date, time or his location). Pulse 100 Respirations:... more
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Science

03/03/21

Science heat question
 A 1.9 kg piece of copper metal at 70.0°C is placed in water at 25.0°C. The final temperature of the water and copper was 26.8°C. How much water was there? (kg)[ c_copper = 385 J/(kg°C), c_water =... more
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03/03/21

Chemistry Homework! Combustion!
How many moles of carbon dioxide is produced by the complete combustion of 5 g of propane Convert this answer into grams
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03/03/21

Chemistry Homework! Combustion!
During combustion how many moles of oxygen are needed to react with 5 g of propane? Convert this answer into grams
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Science Physics

03/03/21

What is the Action vs reaction car sitting in the driveway and a dog pulling on a leash
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03/03/21

Either give me the answer or tell me how to find the answer, please. My grades are declining, my missing assignments are increasing, and I am falling apart.
PLEASE HELP ME WITH ALL MY QUESTIONS FOR SCIENCE!!!!
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03/03/21

What is the downward resultant force (weight) of a girl with a mass of 50 kilograms in a space station with an artificial gravity of 7 N/kg?

What is the downward resultant force (weight) of a girl with a mass of 50 kilograms in a space station with an artificial gravity of 7 N/kg?
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03/03/21

How much force is needed to accelerate a 62Kg skier at a rate of 1.2 m/sec2 across level ground? Assume that there is negligible friction between skis and snow covered ground.

How much force is needed to accelerate a 62Kg skier at a rate of 1.2 m/sec2 across level ground? Assume that there is negligible friction between skis and snow covered ground.
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03/03/21

What is the acceleration of a 5.8 kilogram bowling ball if a force of 12 N is applied to it?
What is the acceleration of a 5.8 kilogram bowling ball if a force of 12 N is applied to it?
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03/03/21

What is the mass of an object that needs a force of 4,300 N to accelerate it at a rate of 4 m/sec2
What is the mass of an object that needs a force of 4,300 N to accelerate it at a rate of 4 m/sec2
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