4,374 Answered Questions for the topic Science

Science Chemistry

01/30/21

Heat Energy and Heat Capacity

If you place 125g of aluminum in a calorimeter with 1.0kg of water and the water changes temperature by 2.0°C and the aluminum changes by -74.95°C:a. How much heat energy has the water gained?b.... more
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Science Chemistry

01/30/21

Enthalpy Changes
50.0mL of 0.500 mol/L of Copper (II) sulfate solution is mixed with 50.0mL of 1.00 mol/L solution of sodium hydroxide in a coffee-cup calorimeter. The temperature change is recorded to be 5.32°Ca.... more
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01/30/21

can someone actually help me please
Question 1: 3 Cu  +   8HNO3  --> 3 Cu(NO3)2   +  2 NO  +  4  H2OIn the above equation how many moles of water can be made when 36 moles of HNO3 are consumed? Question 2: Sodium chlorate... more
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01/30/21

i need help please
Question 1: S   +   6 HNO3  -->  H2SO4  +  6 NO2  +   2 H2OIn the above equation how many moles of H2SO4 can be made when 10 moles of HNO3 are consumed?Question 2: Sodium chlorate decomposes... more
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Science Chemistry

01/30/21

please help me please i have been stuck for many hours
Question 1: 3 Cu  +   8HNO3   g 3 Cu(NO3)2   +  2 NO  +  4  H2OIn the above equation how many moles of NO can be made when 60 moles of HNO3 are consumed?Question 2:... more
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Science Chemistry

01/30/21

please help me please i have been stuck for many hours
Question 1: 3 Cu  +   8HNO3   g 3 Cu(NO3)2   +  2 NO  +  4  H2OIn the above equation how many moles of NO can be made when 60 moles of HNO3 are consumed?Question 2:... more
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Science Chemistry

01/29/21

Calorimeters in Chemistry
Calorimeters can be used to determine how much energy is in food. The energy in food is usually expressed in calories or kilocalories. A calorie is the amount of energy needed to change the... more
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Science Physics

01/29/21

The correct formula for diphosphorus pentafluoride is:

PF, P2F5, P2F6 or K2F5
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Science Chemistry

01/27/21

How do the names of the compounds, Carbon Tetrabromide and Magnesium Nitrate describe the chemical composition of each compound?
In one paragraph preferably but any answer is fine.
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01/27/21

What are the three ways of Co2 transported within blood
Please I need help with question
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Science Math Physics

01/27/21

What is the spring constant?
A ball of mass 4 Kg is released from rest at a height 50m above the spring. The ball compresses the spring by 5 m. What is the spring constant? Use g= 10 m/s^2
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Science Math Physics

01/27/21

Calculating energy Conservation
A compressed spring in a toy is used to launch a 0.05 Kg ball. If the ball leaves the toy with an initial horizontal speed of 5.00 meters per second, and the spring constant is 50 N/m, what is the... more
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01/26/21

Pathophysiology Calcium Question
Explain how malabsorption of calcium from the intestine would affect serum calcium and serum PTH.Any help on this question would be greatly appreciated, thanks!
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01/26/21

Pathophysiology Hormone Balance

Fill in the following table regarding the hormones involved in water and sodium balance.  Stimulus for Release Effects of hormone ADH Aldosterone Atrial natriuretic peptide If... more
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01/25/21

.Explain the difference between the type of blood carried by arteries and veins of: pulmonary circulation and systematic circulation on and on and
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01/25/21

Explain the changes that occur to the characteristics of inspired air before it enters the lungs

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01/25/21

List the structures that help to change the characteristic of inspired air before it reaches the lungs.
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01/25/21

Describe the negative feedback loop
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01/25/21

Name the main body compartments of the human body and list organs in the different compartments

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Science Biology Bio

01/25/21

Describe the functional effects of the sympathetic nervous system,
Please i need help with this question i don't understand this question. it's urgent
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Science Biology Biosience

01/25/21

Describe the negative feedback loop in detail. Explain the function of each component. A general negative feedback loop, not one specific to temperature regulation.
Please i need help with this question
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01/25/21

Pathophysiology Clinical Scenario Question

A 16-year-old girl is seen by her primary care doctor because her parents are concerned about her binge eating and their recent discovery that she engages in self-induced vomiting. Initial... more
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01/25/21

POLITICS SHOULD GOVERN OVER SCIENCE DEBATE
"Politics should govern science"Explain why? Give an argumental statement.
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01/24/21

What happens when co2 is heated

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Science Math Physics

01/22/21

How do I answer these physics questions and what answer should I get?
You want to design the automobile racing circuit in Los Angeles to attract tourists to boosteconomy during Spring. First, you design the banked road for the racing cars to speed at 100mphfor a... more
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