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Luba_88 [7]
3 years ago
7

Sodium is a shiny metal. When cut, it dulls quickly. It also reacts violently with water. Which of the following would probably

show the same characteristics?
Chemistry
1 answer:
siniylev [52]3 years ago
3 0

Answer:

jhgjghjghjghjgjhgjhgjhghjg

Explanation:

i need a crown

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Calculate the density of the four solutions. All of the solutions has the volume equal to 25 ml. Red solution has 25.0 g of mass
Scilla [17]

Answer:

              B. Green solution density is 1.06 g/ml and blue solution density is 1.20 g/ml

Explanation:

Density is given as,

                               D = Mass / Volume

Red Solution,

                               D = 25 g / 25 mL

                               D = 1 g/mL

Green Solution,

                               D = 26.5 g / 25 mL

                               D = 1.06 g/mL

Yellow Solution,

                               D = 28.2 g / 25 mL

                               D = 1.128 g/mL

Blue Solution,

                               D = 30 g / 25 mL

                               D = 1.20 g/mL

3 0
3 years ago
Which of the following methods for increasing the rate of chemical reaction increases the effectiveness of the interactions betw
denpristay [2]

Answer:

Increasing the surface area of the reactants

Explanation:

An increase in surface area of the reactant will always cause an increase in the rate of reaction. This is so because, an increase in the surface area of the reactant will cause the reactant particles to collide effectively thereby bringing about an increase in the reaction rate.

Collision theory suggests that for a reaction to occur, the reactant particles must collide with the right orientation. As the surface area of the reactants are increased, the reactants particles collide more with the right orientation bringing about definite increase in the rate of reaction.

3 0
3 years ago
What are kind and number of atoms in ring portion in the haworth structure of glucose
monitta

Answer:

The six member ring and the position of the -OH group on the carbon (#4) identifies glucose from the -OH on C # 4 in a down projection in the Haworth structure). Fructose is recognized by having a five member ring and having six carbons, a hexose.

3 0
3 years ago
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What can be said of a closed system when an exothermic reaction proceeds in an aqueous solution?
lyudmila [28]
An exothermic reaction is a type of reaction that dissipates heat as the reaction proceeds. This would mean that in a closed system, when a reaction proceeds and is endothermic, the temperature of the solution  or the system would increase so as to maintain the equilibrium with the whole system.
8 0
3 years ago
Hi! My responsibility is to add and protection to plant cells. what i am​
liq [111]
Probably a cell wall
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