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Nataliya [291]
3 years ago
13

How does acid affect limestone?

Chemistry
1 answer:
Andrej [43]3 years ago
7 0

Answer:

It reacts by fizzing and wearing away/dissolving the rock.

Explanation:

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Geckos and some other animals can climb smooth surfaces. Which of these explanations of this
Marrrta [24]

Answer:

The gecko's feet have tiny suction cups on them that stick to the surface.

4 0
2 years ago
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Can anybody check my answer?
anzhelika [568]

Answer:

\boxed{\text{25. 20 L; 26. 49 K}}

Explanation:

25. Boyle's Law

The temperature and amount of gas are constant, so we can use Boyle’s Law.

p_{1}V_{1} = p_{2}V_{2}

Data:

\begin{array}{rcrrcl}p_{1}& =& \text{100 kPa}\qquad & V_{1} &= & \text{10.00 L} \\p_{2}& =& \text{50 kPa}\qquad & V_{2} &= & ?\\\end{array}

Calculations:

\begin{array}{rcl}100 \times 10.00 & =& 50V_{2}\\1000 & = & 50V_{2}\\V_{2} & = &\textbf{20 L}\\\end{array}\\\text{The new volume will be } \boxed{\textbf{20 L}}

26. Ideal Gas Law

We have p, V and n, so we can use the Ideal Gas Law to calculate the volume.

pV = nRT

Data:  

p = 101.3 kPa

V = 20 L

n = 5 mol

R = 8.314 kPa·L·K⁻¹mol⁻¹

Calculation:

101.3 × 20 = 5 ×  8.314 × T

2026 = 41.57T

T = \dfrac{2026}{41.57} = \textbf{49 K}\\\\\text{The Kelvin temperature is }\boxed{\textbf{49 K}}

6 0
3 years ago
Are mass and *weight of matter* the same thing​
Scorpion4ik [409]

Answer:

Mass is the quantity of an object.

Weight is the force with which the object is attached towards the earth.

Hope it helps

7 0
3 years ago
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Which option correctly describes the enthalpy of formation?
leonid [27]

Answer: Endothermic reaction.

Explanation:  A chemical reaction in which energy is absorbed from the surrounding environment.

4 0
3 years ago
if the mass of the skate bored doubled but the net force on it remained constant, what would happen to the skate bored's acceler
katrin [286]
The skateboard's acceleration would decrease.

The larger the mass of an object, the more force is required to move it.
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3 years ago
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