3,539 Answered Questions for the topic Science

#### During exercise, venous return is enhanced by?

a.the operation of carotid arterialand femoral arterial valves.b. the operation of the respiratory muscle/ventilation pump.c. skeletal muscle pump operation.d. all of the above.e. only b &...
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Science

04/15/15

#### Why does yeast not belong in the eubacteria kingdom

It is for my science homework that is due in about 1 hour! I need an answer now!

Science Astronomy

04/14/15

#### Astronomy question about comets

I am stuck on this one question on my science homework, and I would like to know how to answer it so I can be ready for a quiz, too. Please help.
Suppose a comet passes the sun every 57 years,...
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Science

04/01/15

#### What is the mass of 2.5 moles of BeCl2?

What formula do I need to use to find the mass?

Science

03/30/15

#### I start with an alternative, my middle is likely an article and my end starts with the beginning of the earth. Who am I

it may be related with science

Science

03/22/15

#### name two rocks that are not igneous metamorphic or sedimentary?

two rocks that are not igneous metamorphic or sedimentary?help please

03/18/15

#### Is climate change the same as global warming?

Could the terms climate change and global warming be used interchangeably?

03/15/15

#### Am I correct in my thinking about cyclic AMP?

I've been working on this for awhile, but I'm not sure if I'm really getting it. If a patient injects, into the venous system, a polar molecule that, when placed in a test-tube with isolated...
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03/05/15

#### need help on this question, dont understand it.

A 15 litre cylinder contains 0.35kg of butane gas (C4 H10). Assuming ideal gas behaviour, calculate the pressure of the gas if the cylinder is stored at 50 Fahrenheit.

#### If Justin races his Checy S-10 down Highway 4 for 2,560 meters in 60 seconds, what is his average speed(velocity)?

If Justin races his Checy S-10 down Highway 4 for 2,560 meters in 60 seconds, what is his average speed(velocity)?

#### What is the mass of a sample of water that receives 2000 calories and its temperature rises from 60 degrees C to a boil?

This is one of the questions on my review guide my teacher gave me and I have a test tomorrow and have no idea how to find the answer to this question! If someone could give the formula to find...
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02/19/15

#### A sample of gas under a pressure of 22.0 kPa has a volume of 33.0 cm3. The pressure is increased to 888 kPa, while the temperature remains constant. What v

A sample of gas under a pressure of 22.0 kPa has a volume of 33.0 cm3. The pressure is increased to 888 kPa, while the temperature remains constant. What volume will the gas occupy at this...
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02/19/15

#### The pressure exerted by a gas is 38.0 atm while it has a volume of 350 cm3. What would be the volume of this sample of gas at standard atmospheric pressure?

The pressure exerted by a gas is 38.0 atm while it has a volume of 350 cm3. What would be the volume of this sample of gas at standard atmospheric pressure?
must show units, and must be rounded...
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02/19/15

#### The pressure exerted by a gas is 45.0 atm while it has a volume of 475350 cm3. What would be the volume of this sample of gas at standard atmospheric pressure?

The pressure exerted by a gas is 45.0 atm while it has a volume of 475350 cm3. What would be the volume of this sample of gas at standard atmospheric pressure?
must show units, and must be...
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02/19/15

#### The pressure exerted by a gas is 4.0 atm while it has a volume of 652 cm3. What would be the volume of this sample of gas at standard atmospheric pressure?

must show units, and must be rounded to the correct number of significant digits. Pressure for STP in atmospheric units (atm) is 1.0, STP for kilopascals (kPa) is 101.3 kPa:
The pressure...
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Science

02/09/15

#### How do isotopes of the same element differ with regards to sub-atomic particles?

this is a question that will be on my test

Science Speed Distance Time

02/06/15

#### How long does it take someone to go .6 km at a speed of 65km/hr???

Helpp!!? This is for science class 8th Grade level

Science

02/04/15

#### what unit would you use to measure the amount of water in a lake?

What unit would you use to measure the amount of water in a lake?

Science

02/04/15

#### world problem

If you had determined the density of the irregularly shaped stone using only one stone shoud you have obtained the same density value.

#### how do you explain the radical function of f(x)=squareroot of x

I have trouble understanDing how to explain the f of x equals square root of x I need help some one

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