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aleksandr82 [10.1K]
2 years ago
7

6. A rectangular block of wood has length 6.0 cm, width 5.0 cm and height 10.0 cm. It has mass l50g. What is the mass of a block

of the same type of wood of length 3.0 cm, width 5.0 cm and height 20.0 cm?
Chemistry
1 answer:
vovikov84 [41]2 years ago
4 0
The mass would also be 150g like the first block of wood. Both of their volumes are 300 cm^2, and since they are the same type of wood they have the same density. Therefore following d=m/v, they have the same mass
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The value of resistance r was determined by measuring current I flowing through the resistance with an error E1=±1.5% and power
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Answer:5

Explanation:help me to solve

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2 years ago
Given the following data, determine the rate constant of the reaction 2NO(g) +Cl2(g) --> 2NOCl(g) Experiment [NO] (M) [Cl2] (
andrew-mc [135]

Answer:

k = 2.647 x 10-2 M-2 s-1

Explanation:

2NO(g) +Cl2(g) --> 2NOCl(g)

Experiment [NO] (M) [Cl2] (M) Rate (M/s)

1 0.0300 0.0100 3.4 x 10-4

2 0.0150 0.0100 8.5 x 10-5

3 0.0150 0.0400 3.4 x 10-4

Frrom experiments 1 and 3;

Reducing the concentration of NO by a factor of 2 decreases the rate of the reaction by a factor of 4. This means the reaction is second order with respect to NO.

From experiments 2 and 3:

Increasing the concentration of Cl2 by a factor of 4 increases the rate by a factor of 4. This means the reaction is first order with respect to Cl2

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7 0
2 years ago
In the chemical reaction NaHCO3 + CH3COOH → CH3COONa + H2O +CO2, 83 g of sodium bicarbonate reacts with 70 g of acetic acid. Whi
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MNaHCO₃: 23+1+12+(48×3) = 84g
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.................
84g NaHCO₃ react with 60g CH₃COOH
83g NaHCO₃ react with...........

84g ----- 60g
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We used 70g CH₃COOH, it' too much.
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_______________________________
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3 0
2 years ago
How many iodide ions are present in 65.5ml of .210 m AlI3 solution
blondinia [14]

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2.48\times 10^{22} ions are present in solution.

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7 0
2 years ago
Which term names the metamorphic change to a rock that results mainly from the heat energy of nearby magma? A. local metamorphis
marshall27 [118]
The answer to this question would be: <span>thermal metamorphism
</span>
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8 0
2 years ago
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