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Norma-Jean [14]

2 years ago

15

A green powder was placed into a beaker of water. After it was stirred the water looked cloudy and lumps of powder could still b

e seen. Has a solution been formed? Explain your answer?

1 answer:

sukhopar [10]2 years ago

7 0

Answer:

it make poisionus police come and took away

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1. As you increase speed is there an increase or decrease in Kinetic Energy?

drek231 [11]

$\qquad \qquad\huge \underline{\boxed{\sf Answer}}$

1. As you increase speed is there an increase or decrease in Kinetic Energy?

$\qquad \sf \dashrightarrow \: increase$

2. As you increase mass is there an increase or decrease in Kinetic Energy?

<h3 />

$\qquad \sf \dashrightarrow \: increase$

3. As you decrease speed is there an increase or decrease in Kinetic Energy?

$\qquad \sf \dashrightarrow \: decrease$

4. As you decrease mass is there an increase or decrease in Kinetic Energy?

$\qquad \sf \dashrightarrow \: decrease$

3 0

3 years ago

When determining whether a chemical reaction has taken place you observe and look for several indicators. Which would be conside

Phoenix [80]

Answer:

B) Heat is given off.

Explanation:

When heat is given off, a chemical change must have occurred and such a reaction is termed an exothermic reaction.

A chemical change is one in which;

the process is not easily reversible
leads to the production of new kinds of matter
involves change in mass
requires a considerable amount of energy.

Most chemical reactions are accompanied by heat changes.

4 0

3 years ago

Molten zinc chloride can be electrolysed.

Crank

Answer: The products of electrolysis are Zn(l) and $Cl_2$ gas

Explanation:

Electrolysis of a subastance is breaking it into its constituents by the action of electrical current.

In the electrolysis of molten zinc chloride, zinc metal is produced at the cathode which is a negative electrode and chlorine gas produces as the anode which is a positive electrode.

$ZnCl_2(l)\rightarrow Zn^{2+}+2Cl^-$

At anode : $2Cl^-(l)\rightarrow 2e^-+Cl_2(g)$

At cathode : $Zn^{2+}(l)+2e^-\rightarrow Zn(l)$

5 0

3 years ago

What materials are needed to find density of water

alexgriva [62]

Answer:

Image result for What materials are needed to find density of water

Calculate the density by dividing the mass by the volume.

Using the equation density = mass/volume, you can determine the density of water. Plug in the values of mass and volume you determined and solve.

Explanation:

4 0

3 years ago

notka56 [123]

Answer:

Explanation:

1.false

2.true

2.true

5 0

3 years ago