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sp2606 [1]
2 years ago
12

Please answer this question​

Chemistry
2 answers:
mestny [16]2 years ago
8 0
A.

Sugar dissolves faster in hot water

Since 20 degrees Celsius is the lowest temperature it will take the longest to dissolve the sugar.
Amanda [17]2 years ago
5 0

Answer:

the one in 20 degrees will take the longest to dissolve because it is coz meaning that the water particles do not have much movement to erode the sugar particles.

Explanation:

i hope this helps and also i would like to know which chapter this is from

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Pls I need help give away 11 points
Maru [420]

Answer:

The charge is +2

Explanation:

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+2 :)

7 0
3 years ago
What type of reaction is <br> CH 4 (g)+2O 2 (g) CO 2 (g)+2H 2 O(g)
tangare [24]

Answer: combustion

Explanation:

Combustion reactions can be identified by looking at the reactants and the products.

Usually, the reactants will be a hydrocarbon and oxygen. And the products will be CO2 and H2O

8 0
2 years ago
a gas has a volume of 2.00 at 323k and 3.00 ATM What would be the new volume if the temperature is changed to 273 K in the press
Ber [7]

Answer:

V_2 = 5.07L

Explanation:

\frac{P_1 V_1}{T_1} = \frac{P_2 V_2}{T_2}\\V_2 = \frac{P_1 V_1 T_2}{T_1 P_2} = \frac{3.00atm \cdot 2.00L \cdot 273K}{323K \cdot 1.00atm} = 5.07L

6 0
2 years ago
Which of these statements is not true about chemical reaction rates? a Temperature can change a reaction rate. b The amount of r
Umnica [9.8K]

Answer:

The statement that is not true is: 'Temperature does not affect the reaction rate'.  

Explanation:

a) Temperature can change a reaction rate. <u> This is true</u>

Increasing the temperature increases the reaction rates because of the disproportionately large increase in the number of high energy collisions. It is only these collisions (possessing at least the activation energy for the reaction) which result in a reaction.

For example, the time taken to melt a metal will be much higher at a lower temperature but it will decrease as soon as we increase the temperature

b) The amount of reactants can increase the reaction rate.<u> This is true</u>

A higher concentration of reactants leads to more effective collisions per unit time, which leads to an increased reaction rate.

c) Temperature can decrease the reaction rate. <u>This is true </u>

Decreasing the temperature decreases the reaction rates because of the  decrease in the number of high energy collisions. It will result in a slower reaction.

d) Temperature does not affect the reaction rate.  <u>This is not true. </u>

The reaction rate is temperature dependent. The reaction rate increases with higher temperature and decreases with lower temperature.

4 0
3 years ago
When a plant _____, roots grow and a seedling begins to grow?
dusya [7]

Answer:

stem

Explanation:

3 0
1 year ago
Read 2 more answers
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