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anzhelika [568]
3 years ago
13

PLEASEE HELP ME!!!!!

Chemistry
1 answer:
Yakvenalex [24]3 years ago
6 0

Answer:

Explanation:

8.61+5.779 = 14.389 = 1.4389 × 10^1

25 - 12.5 = 1.25 x 10^1

56.35 / 13.2 = 4.2689

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A balloon at 30.0°C has a volume of 222 mL. If the temperature is increased to 56.1°C and the pressure remains constant, what wi
svp [43]

Answer:

<em>415.15 mL</em>

Explanation:

To solve the statement, you can use the law of Charles - Gay Lussac, which states that "<em><u>the volume of gas is directly proportional to its temperature at constant pressure</u></em>." Mathematically:

\frac{V1}{T1} = \frac{V2}{T2} = Constant

You can calculate the volume V₂ Clearing it from the equation and replacing the values granted by the statement to perform the calculation:

V₂ = V₁ x T₂ / T₁ = 222 mL x 56.1 ° C / 30.0 ° C = 415.15 mL

Therefore, <em>the gas at 56.1 ° C will occupy a volume of 415.15 mL</em>

7 0
3 years ago
What sets an atom of one element apart from atoms of all other elements?
Y_Kistochka [10]

The number of protons in the nucleus

8 0
3 years ago
The cis configuration has the substituted groups on opposite side of the double bond
rewona [7]

Answer:

False.

Explanation:

Hello there!

In this case, according to the attached picture, it is possible for us to evidence that cis- isomers have the substituted groups on the same side of the double bond whereas the trans- isomers have the substituted groups on the opposite side of the double bond.

In such a way, we infer that the given statement is FALSE, because that is the definition for the trans configuration.

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7 0
3 years ago
What volume of solution would be present if 40.0 g Caci, would be used to make a 0.600M
True [87]

Answer:

\large \boxed{\text{601 mL}}

Explanation:

1. Calculate the moles of CaCl₂.

\text{Moles} = \text{40.0 g} \times \dfrac{\text{1 mol}}{\text{110.98 g}} = \text{0.3604 mol}

Step 2. Calculate the volume of CaCl₂  solution

\begin{array}{rcl} n &= &\dfrac{c}{V}\\\\\dfrac{\text{0.600 mol}}{\text{1 L}} &=& \dfrac{\text{0.3604 mol}}{V}\\\\ \dfrac{0.600V}{\text{1 L}} & = & 0.3604\\\\0.600V &= & \text{0.3604 L}\\V & = & \dfrac{\text{0.3604 L}}{\text{0.600 L}}\\\\ & = & \text{0.601 L}\\& = & \textbf{601 mL}\\\end{array}\\\text{The volume of the solution would be $\large \boxed{\textbf{601 mL}}$}

8 0
3 years ago
When a chemical reaction takes in energy it might feel cold hot boiling electric
padilas [110]

Answer: hot

Explanation:

Exothermic reactions are defined as the reactions in which energy of the product is lesser than the energy of the reactants. The total energy is released in the form of heat and the system will be cold and surroundings will be hot.

Endothermic reactions are defined as the reactions in which energy of the product is greater than the energy of the reactants. The total energy is absorbed in the form of heat and the system will be hot and surroundings will be cold.

As heat is absorbed,  the reaction is endothermic and the system will feel hot.

7 0
3 years ago
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