Ask question

Ask question

All categories

2 years ago

15

Equal masses of two substances absorb the same amount of heat. The temperature of a substance A increases twice as much as subst

ance B. Which substance has a higher specific heat capacity?
A. Substance A
B. Substance B

1 answer:

katrin [286]2 years ago

7 0

Letter A because the temperature of a substance A increases "Twice as much".

You might be interested in

Cómo se formulan los hidroxidos?

uysha [10]

Answer:

es esto OH−

Explanation:

el hidróxido es hidrógeno unido covalentemente al oxígeno. Es un anión y tiene carga negativa.

6 0

3 years ago

90 POINTSSSS!!!

Katarina [22]

Answer:

$\large \boxed{\text{-2043.96 kJ/mol}}$

Explanation:

Assume the reaction is the combustion of propane.

Word equation: propane plus oxygen produces carbon dioxide and water

Chemical eqn: C₃H₈(g) + O₂(g) ⟶ CO₂(g) + H₂O(g)

Balanced eqn: C₃H₈(g) + 5O₂(g) ⟶ 3CO₂(g) + 4H₂O(g)

(a) Table of enthalpies of formation of reactants and products

$\begin{array}{cc}\textbf{Substance} & \textbf{$\Delta_{\text{f}}$H/(kJ/mol}) \\\text{C$_{3}$H$_{8}$(g)} & -103.85 \\\text{O}_{2}\text{(g)} & 0 \\\text{CO}_{2}\text{(g)} & -393.51 \\\text{H$_{2}$O(g)} & -241.82\\\end{array}$

(b)Total enthalpies of reactants and products

$\Delta_{\text{rxn}}H^{\circ} = \sum \left( \Delta_{\text{f}} H^{\circ} \text{products}\right) - \sum \left (\Delta_{\text{f}}H^{\circ} \text{reactants} \right)\\= \text{-2147.81 kJ/mol - (-103.85 kJ/mol)}\\= \text{-2147.81 kJ/mol + 103.85 kJ/mol}\\= \textbf{-2043.96 kJ/mol}\\\text{The enthalpy change is $\large \boxed{\textbf{-2043.96 kJ/mol}}$}$

ΔᵣH° is negative, so the reaction is exothermic.

5 0

2 years ago

The mass of a proton is approximately equal to the mass of…

Misha Larkins [42]

Answer:

1.67262 × 10−27 kg,

Explanation:

I think its right 0_0

5 0

2 years ago

What is the mass of 8.87 x 10^24 atoms of carbon?<br><br> PLEASE HELP!!

stiks02 [169]

Answer: 177g

Explanation:

Aw 12 = 6.02214076*10^23 atoms

mass = 12*88.70^23/6.022*10^23

4 0

2 years ago

A sample of pure sodium-24 has an initial mass of 10.0 grams. How many grams of sodium-24 will remain at the end of 4 half-lives

astra-53 [7]

I got b 5)A sample of pure sodium-24 has an initial mass of 10.0 grams. How many grams of sodium-24 will remain at the end of 4 half-lives?

A. 0.315
B. 0.630
C. 5.00
D. 6.00

8 0

3 years ago