4,347 Answered Questions for the topic Science

Science Chemistry

02/06/21

CHEMISTRY HELP Consider the reaction. A(aq)↽−−⇀2B(aq) KC=7.81×10^−6 at 500 K
Consider the reaction.A(aq)↽−−⇀2B(aq)𝐾c=7.81×10−6 at 500 KIf a 5.40 M sample of A is heated to 500 K, what is the concentration of B at equilibrium?
Follows • 1
Expert Answers •1

02/06/21

Science question
What are some possible ways that a researcher can go about measuring something they are interested in?
Follows • 1
Expert Answers •1
Science

02/05/21

Why is the sky blue?

Why IS the sky blue? Does it reflect from the ocean and become lighter?
Follows • 1
Expert Answers •1

02/05/21

please someone help please i have one question
S   +   6 HNO3  -->  H2SO4  +  6 NO2  +   2 H2OIn the above equation how many moles of water can be made when 47 moles of HNO3 are consumed?Please give and only give explanation and solution.
Follows • 1
Expert Answers •1

02/05/21

Momentum/Impulse
Two objects, A and B, initially at rest, are “exploded” apart by the release of a coiled spring that was compressed between them.As they move apart, the velocity of object A is 5 m/s and the... more
Follows • 1
Expert Answers •1
Science

02/05/21

Nature of science
A block of wood measures 30 cm long, 6 cm wide, 3 cm high, the blocks mass is 270g. What is the density of the block?
Follows • 1
Expert Answers •1

02/05/21

Psychology questions

Why is it important to know how to design a psychological experiment? What are some possible ways that a researcher can go about measuring something they are interested in?
Follows • 1
Expert Answers •1

02/05/21

Intramolecular and Intermolecular forces
Do intramolecular forces (ionic/covalent) or intermolecular forces (dipole/London/Hydrogen) account for the properties associated with different types of bonds?
Follows • 1
Expert Answers •1

02/05/21

can someone please actually help me please
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
Follows • 1
Expert Answers •1

02/05/21

please can i actually please receive help because i have been stuck for many hours
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
Follows • 1
Expert Answers •1

02/03/21

Question about Antibodies and Hypersensitivity
Use the following terms to describe the types of antibodies (environmental, allogenic, autoimmune) present with each of the following hypersensitivity reactions: Reaction to pet dander Tissue graft... more
Follows • 1
Expert Answers •1

02/02/21

Pathophysiology Immune Disorders Question
A 32-year old man presents in the allergy clinic with complaints of allergic rhinitis or hay fever. His major complaints are those of nasal pruritis (itching) nasal congestion with profuse watery... more
Follows • 1
Expert Answers •1

01/31/21

What third blood gas is present but not physiologically important under normal circumstances?
Follows • 2
Expert Answers •1
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
Follows • 2
Expert Answers •1
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
Follows • 2
Expert Answers •1

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
Follows • 1
Expert Answers •1

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
Follows • 1
Expert Answers •1
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
Follows • 1
Expert Answers •1
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
Follows • 1
Expert Answers •1
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
Follows • 1
Expert Answers •1
Science Physics

01/29/21

The correct formula for diphosphorus pentafluoride is:

PF, P2F5, P2F6 or K2F5
Follows • 1
Expert Answers •1
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.
Follows • 2
Expert Answers •1

01/27/21

What are the three ways of Co2 transported within blood
Please I need help with question
Follows • 1
Expert Answers •2
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
Follows • 1
Expert Answers •1
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
Follows • 1
Expert Answers •1

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.