4,374 Answered Questions for the topic Science

Science

05/31/20

PLEASE HELP WITH THE SOLUTION!
Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the correct position in the answer box. Release your mouse button when the... more
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05/30/20

Please give me a concept about your thinking in this issue.
Faced with the need to deliver risk ratings for your organization, you will have to substitute the organization’s risk preferences for your own. For, indeed, it is the organization’s risk tolerance... more
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05/30/20

Please solve it
Q.1. Consider the nutrients' concept below and use it to answer question1(a,b)Nutrient Access concept: it is believed that maximum crop growth can be achieved by constantsupply of soil nutrients... more
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05/30/20

what would the right answer be

Gold dissolves in the acid mixture known as aqua regia according to the following balanced reaction: Au + HNO3 + 3 HCl --> AuCl3 + NO + 2H2O If... more
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Science Chemistry

05/30/20

its chemistry :I
1.24g of Tin (III) fluoride is in a package of toothpaste decompose to Tin and Fluorine gas.By this reaction: 2SnF3 (s) -> 2Sn (s) + 3F2 (g)What volume of Fluorine gas will be produced at STP?
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05/29/20

I need help Please
According to Model 3, wolves (gray and red) are more closely related to what other group—dogs or coyotes? Explain your answer.
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05/27/20

i need help please

Identify one organism (plant or animal) in which artificial selection is used, and describe how that selection process occurs. 
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05/27/20

i need help please
do you think that organisms/species will become more different from each other over time? Or more similar? Explain your reasoning. 
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Science Biology Chemistry

05/27/20

I need help with this question. I cant answer it
What molecule determines which traits an organism has?I cant seem to answer it
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Science Physics

05/27/20

A 100-W light bulb is turned on. It has an operating voltage of 120 V.
A 100-W light bulb is turned on. It has an operating voltage of 120 V.a) how much current flows through the bulb?b) what is the resistance of the bulb?c) how much energy is used each second?
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Science Physics

05/27/20

Lenses- Physics
An object is placed 45 cm in front of a converging lens with a focal length of 20 cm. Draw a ray diagram. Estimate the image distance and give the image characteristics. the answer the book gives... more
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Science

05/27/20

In which direction does gravity operate on earth?

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Science Chemistry

05/26/20

There are 0.275 moles of gas in a container at a temperature of 75OC and a pressure of 200 kPa, what is the volume of the gas?
please explain how you got the answer, thank you
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Science Chemistry

05/26/20

There are 85 liters of gas held in a container at a pressure of 660 mmHg and a temperature of 90OC. How many moles of gas are there in the container?
please explain how you got the answer, thank you
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Science Biology

05/24/20

Need Help With This Biology Evolution Questions?
So I have a question concerning Amur Leopards (PANTHERA PARDUS ORIENTALIS​) 1. what type of speciation is involved with this type of leopard2. which one applies the animal gene flow or genetic... more
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Science

05/23/20

what is the density,in grams per mL (g/mL),of a liquid that has a mass of 206 g and a volume of 321 mL?
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05/22/20

What is the pH of the perchloric acid solution if 4.55 L of perchloric acid solution reacted completely with 1.86 g sodium carbonate in a double replacement reaction?
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Science Math

05/21/20

Is it possible to create a formula to rank subject on a scale of 1-10 (decimals acceptable) given the data?
Trying to create a formula to that ranks a subjects on a scale of 1-10Data I have includes, in no particular order The number of trials completed over the number of trials attempted. For example... more
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05/21/20

How many grams of water react completely with 5.0 g iron(III) chloride in the following reaction: iron(III) chloride + water → iron(III) hydroxide + hydrochloric acid
How many grams of water react completely with 5.0 g iron(III) chloride in the following reaction: iron(III) chloride + water → iron(III) hydroxide + hydrochloric acid
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05/21/20

what is the oxidation number of manganese in permanganate ion?
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05/21/20

how many grams of water react with 5 grams iron chloride
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05/21/20

how many grams of water are produced when 2.50 mol oxygen reacts with hydrogen
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05/21/20

how many grams of water are produced from reacting 32.0 g hydrogen??
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05/20/20

How much liquid (in mL) was originally in the beaker with the 20% solution and how much liquid (in mL) was originally in the beaker with 15% solution?
You have one beaker which contains an unknown amount of a 15% iodine solution and another beaker which contains an unknown amount of a 20% iodine solution. You add only half of the 20% solution to... more
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Science Chemistry

05/20/20

Question in the description can you please explain how you got the answer, thank you.
A cylinder with a movable piston contains 6.00 g of helium, at room temperature. More helium was added to the cylinder and the volume was adjusted so that the gas pressure remained the same.... more
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