4,365 Answered Questions for the topic Science

Science Chemistry Chem

02/17/21

If a solution of 1.00g of unknown solute is added to 9.116 g of steric acid and the solution freezes at 63.6 oC, What is the molality of the solution
( Normal FP steric acid = 68.88oC and Kf = 4.50 oC/m )
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Science Chemistry Chem

02/17/21

If 240 mL of an aqueous solution containing 1.67 g of an unknown covalent solid at 25oC gives rise to an osmotic pressure of 497 mmHg, what is the molar mass (g/mol) of the unknown?
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02/16/21

Identify blood and lymphatic disorders question
For each of the following characteristics, identify the blood or lymphatic disorder(s) in which they occur:NOTE: For most, I wrote down what I think occurs in these scenarios, I'm just wondering if... more
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02/16/21

A block with mass m1 = 0.450 kg is released from rest on a frictionless track at a distance h1 = 2.85 m above the top of a table.
A block with mass m1 = 0.450 kg is released from rest on a frictionless track at a distance h1 = 2.85 m above the top of a table. It then collides elastically with an object having... more
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02/16/21

An unstable nucleus of mass 1.7 ✕ 10−26 kg, initially at rest at the origin of a coordinate system, disintegrates into three particles.

An unstable nucleus of mass 1.7 ✕ 10−26 kg, initially at rest at the origin of a coordinate system, disintegrates into three particles. One particle, having a mass of m1 = 1.8 ✕ 10−27 kg, moves in... more
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02/15/21

Question about Pathophysiology and Anemia
A 65-year-old woman is seen in the clinic because of numbness in her lower legs and feet and difficulty walking. She has no other complaints. She takes a blood pressure pill, two calcium pills, and... more
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02/15/21

Pharmacology/Pathophysiology Question

A new mother is admitted to the intensive care unit and started on low-molecular-weight heparin and warfarin. She is told that she will be discharged in a day or two and will remain on the heparin... more
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02/13/21

Calculate the [H+] and pH of a 0.000173 M acetic acid solution. Keep in mind that the Ka of acetic acid is 1.76×10^−5.

Calculate the [H+] and pH of a 0.000173 M acetic acid solution. Keep in mind that the KA of acetic acid is 1.76×10^−5.This is a problem that will require you to use the quadratic. Start by setting... more
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02/12/21

the crater that killed the dinosaurs
Explain in detailWhat is Chicxulub crater?What are the Volcanic eruption, earthquake, tsunami or meteor impact had happened and their impact on Chicxulub crater?
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02/12/21

Earth and space science question

fill in the process that causes each transition. Your choices are evaporation, condensation, precipitation, melting, and freezing.Ocean -> Atmosphere _______________________Atmosphere ->... more
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02/11/21

Bone Healing: Procallus vs Bony Callus
Differentiate the procallus from the bony callus in the healing of a fracture.
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02/11/21

Algebra 1 Word Problem

A group of college students are going to a lake house for the weekend and plan on renting small cars and large cars to make the trip. Each small car can hold 5 people and each large car can hold 8... more
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Science

02/11/21

math and science
Ms. Heyneman is sitting on the floor. Ms. Macho pushes her to the right with a force of 40 N and there is 15 N of friction acting in the opposite direction. If Ms. Heyneman’s mass is 75 kg, what is... more
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02/11/21

Earth and Space science

Fill in the two processes that cause each of the following transitions. Ocean -> Cloud _______________________, _______________________Cloud -> Glacier _______________________,... more
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02/10/21

PHYSICS LEVER/IMA
Create a class 1 lever with the fulcrum at 50cm mark, have the weight at 100cm mark, and the effort force at 0 cm. 4a)What is the mechanical advantage of the lever4b)move the fulcrum to 60cm what... more
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02/10/21

Science question
Define: A phase change is a change from one state to another, such as from a liquid to a gas. Fill in the blanks with the words “liquid,” “gas,” or “solid” to define each... more
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02/10/21

Mass to Mass stoichiometry

Part one: The compound diborane (B2H6) was at one time considered for use as a rocket fuel. Its combustion reaction is B2H6(g) + 3 O2(ℓ) → 2 HBO2(g) + 2 H2O(ℓ) The fact that HBO2, a reactive... more
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02/10/21

Physics IMA AND LEVERS
knowing the maximum lever length is 1 meter and the weights range from 10 g to 1kg, if you have a class 1 lever with a mechanical advantage of 1a. what is the length between the fulcrum and effort... more
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02/09/21

Exponent Puzzle Algebra 1

Find the value of a that makes the equation true.(2x^2 y^3)^a = 8x^6 y^9
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02/09/21

Algebra 1 Scientific Notation Problem

Find the value of a that makes the equation true.(3x^2a y^4)^3=27x^18 y^12
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02/09/21

Multiply in Scientific Notation
What is the product of 69 and 5.6 * 10^5 expressed in scientific notation?
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Science Algebra 1

02/09/21

Scientific Notation Algebra 1 Word Problem
At a certain zoo, the average mass of one cow is measured to be 410 kilograms. Use scientific notation to express the mass of 110 cows.
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Science Chemistry

02/09/21

A 5.76 liter sample of gas at 22.00C and 748 atm pressure was heated to a final volume of 17.28 liters, with the pressure remaining constant. What was the final Celsius temperature?
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02/08/21

Rheumatoid Arthritis Clinical Scenario Question

A 30-year-old woman recently diagnosed with rheumatoid arthritis (RA) complains of general fatigue and weight loss along with symmetrical joint swelling, stiffness, and pain. The stiffness is more... more
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Science Chemistry

02/08/21

Calculate the boiling point (in oC) of an aqueous solution which is 0.126 m in potassium carbonate.
Kb = 0.52 oC/m
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