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Vesna [10]
3 years ago
6

Pls help 20020200202

Chemistry
1 answer:
Ronch [10]3 years ago
6 0

tell me what to do dudette

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Give me Investigating questions that have dependent variable independent variable and control variable
Masteriza [31]

Answer:

What type of soil filters water best?

Explanation:

dependent variable - the cleanliness of the water after it is filtered

independent variable - soil

control variable - water

(Asking with a <em>please </em>wouldn't hurt -_-)

4 0
3 years ago
Uranium-236 is ____.
wolverine [178]

Answer: <em>T</em><em>h</em><em>e</em><em> </em><em>c</em><em>o</em><em>r</em><em>r</em><em>e</em><em>c</em><em>t</em><em> </em><em>a</em><em>n</em><em>s</em><em>w</em><em>e</em><em>r</em><em> </em><em>i</em><em>s</em><em> </em><em>a</em><em>.</em>

Uranium-236 is intermediate nuclei created by fusion reactions an unstable isotopes of uranium created from four hydrogen atoms used in the H - bomb .

Following is the reaction involved in above process :

<em>²</em><em>³</em><em>⁵</em><em>U</em><em> </em><em>+</em><em> </em><em>¹</em><em>n</em><em> </em><em>=</em><em> </em><em>²</em><em>³</em><em>⁶</em><em>U</em><em> </em><em>=</em><em> </em><em>¹</em><em>⁴</em><em>⁴</em><em>B</em><em>a</em><em> </em><em>+</em><em> </em><em>⁸</em><em>⁹</em><em> </em><em>K</em><em>r</em><em> </em><em>+</em><em> </em><em>3</em><em>¹</em><em>n</em><em> </em><em> </em><em>+</em><em> </em><em>1</em><em>7</em><em>7</em><em> </em><em>M</em><em>e</em><em>V</em><em> </em>

<em>H</em><em>e</em><em>r</em><em>e</em><em> </em><em>,</em>

<em>²</em><em>³</em><em>⁵</em><em>U</em><em> </em><em>=</em><em> </em><em>F</em><em>i</em><em>s</em><em>i</em><em>o</em><em>n</em><em> </em><em>M</em><em>a</em><em>t</em><em>e</em><em>r</em><em>i</em><em>a</em><em>l</em><em> </em><em>,</em>

<em>¹</em><em>n</em><em> </em><em>=</em><em> </em><em>p</em><em>r</em><em>o</em><em>j</em><em>e</em><em>c</em><em>t</em><em>i</em><em>l</em><em>e</em><em> </em><em>,</em>

<em>²</em><em>³</em><em>⁶</em><em>U</em><em> </em><em>=</em><em> </em><em>I</em><em>n</em><em>t</em><em>e</em><em>r</em><em>m</em><em>e</em><em>d</em><em>i</em><em>a</em><em>t</em><em>e</em><em> </em><em>N</em><em>u</em><em>c</em><em>l</em><em>e</em><em>i</em><em> </em>

<em>¹</em><em>⁴</em><em>⁴</em><em>B</em><em>a</em><em> </em><em>a</em><em>n</em><em>d</em><em> </em><em>⁸</em><em>⁹</em><em> </em><em>K</em><em>r</em><em> </em><em>=</em><em> </em><em>F</em><em>i</em><em>s</em><em>s</em><em>i</em><em>o</em><em>n</em><em> </em><em>p</em><em>r</em><em>o</em><em>d</em><em>u</em><em>c</em><em>t</em>

Explanation:

<em>h</em><em>o</em><em>p</em><em>e</em><em> </em><em>i</em><em>t</em><em> </em><em>h</em><em>e</em><em>l</em><em>p</em><em>s</em><em> </em><em>!</em>

<em>b</em><em>r</em><em>a</em><em>i</em><em>n</em><em>l</em><em>i</em><em>e</em><em>s</em><em>t</em><em> </em><em>p</em><em>l</em><em>z</em><em>z</em><em> </em><em>:</em><em>)</em><em>)</em><em>)</em>

3 0
3 years ago
Read 2 more answers
How long will it take for a 40.0 gram sample of I-131 (half-life = 8.4 days) to decay to 1/16 its original mass?
Shtirlitz [24]

Answer:

42 days

Explanation:

Half life = 8.4 days

Starting mass = 40.0 g

Time = ?

Final Mass = 1/16 * 40 = 2.5 g

First Half life;

Remaining mass = 40 / 2 = 20g

Second Half life;

Remaining mass = 20 / 2 = 10g

Third Half life;

Remaining mass = 10 / 2 = 5g

Fourth Half life;

Remaining mass = 5 / 2 = 2.5g

Time = Number of half lives * Duration of half life = 5 * 8.4 = 42 days

6 0
2 years ago
Can someone please help me please
GaryK [48]

Liquids have more kinetic energy in their particles compared to solids. this allows the particles to move more freely, hence why they are fluids


Liquids diffuse from a region of high concentration to a region of low concentration, until equilibrium is reached


When heat is applied the particles gain more kinetic energy so they now have enough energy to overcome the bonds holding them in the liquid. this means they can evaporate off

8 0
3 years ago
A tall pea plant (Tt) is crossbred with another tall pea plant (Tt). The following Punnett square shows the separated alleles fo
Luba_88 [7]

Answer:

B.

Explanation:

when you use punnett squares, you cross the different genes with themselves. if T is in the first box on both sides, the genome will be TT. if the box lines up to tt, it will be tt. the boxes on the left use the genes' first letter and the boxes on the right use the second letter.

7 0
3 years ago
Read 2 more answers
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