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8_murik_8 [283]
3 years ago
5

About one hundred thousand years ago, very fluid lava started erupting slowly and gently from a place near a plate boundary. Wha

t best describes the slope of the mountain that resulted from such a phenomenon? A) Steep slope with high mountain, as these are formed by a composite volcano
B) Gentle slope with mild hill, as these are formed by a composite volcano
C) Gentle slope with mild hill, as these are formed by a shield volcano
D) Steep slope with high mountain, as these are formed by a shield volcano
Chemistry
1 answer:
victus00 [196]3 years ago
3 0

a is the answer because all of the other answers are wrtong

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Does the universe have air in it between the galxies in it
fenix001 [56]

Answer:

No it does not space does not have oxygen and air is caused by oxygen

hey but this was a really interesting question to ask tho

Explanation:

4 0
3 years ago
PLEASEEE HELPPP!!!!!!
chubhunter [2.5K]

Answer:

A

Explanation:

Cs has a higher rate of reaction because it's easier to remove an electron from it, thereby leading to faster reactivity

5 0
3 years ago
Read 2 more answers
How do you write out and balance calcium hydroxide reacts with hydrogen chloride to produce calcium chloride and water
Temka [501]

Answer:

 Ca(OH)₂ + 2HCl →  CaCl₂ +  2H₂O

Explanation:

Reactants;

     Calcium hydroxide = Ca(OH)₂

     Hydrogen chloride  = HCl

 Products;

       Calcium chloride  = CaCl₂

        Water  = H₂O

The reaction equation:

           Ca(OH)₂ + 2HCl →  CaCl₂ +  2H₂O

The reaction is a neutralization reaction where acids reacts with bases to produce salt and water only.

5 0
3 years ago
()
const2013 [10]

Answer:

\large \boxed{\text{-1276 kJ/mol}}

Explanation:

You calculate the energy required to break all the bonds in the reactants.

Then you subtract the energy needed to break all the bonds in the products.

                             CH₃CH₂OH        +  3O₂ ⟶ 2CO₂ + 3H₂O

Bonds:         5C-H 1C-C 1C-O 1O-H    3O=O     4C=O   6O-H

D/kJ·mol⁻¹:    413    347  358  467       495        799      467

\Delta H = \sum{D_{\text{reactants}}} - \sum{D_{\text{products}}}\\\sum{D_{\text{reactants}}} = 5 \times 413 + 1 \times 347 + 1 \times 358 + 1 \times 467 + 3 \times 495 = 3237 + 1485\\=\text{4722 kJ}\\\sum{D_{\text{products}}} = 4 \times 799 + 6 \times 467 =3196 + 2802 = \text{5998 kJ}\\\Delta H = 4722 - 5998= \textbf{-1276 kJ} \\ \text{The overall energy change is $\large \boxed{\textbf{-1276 kJ/mol}}$}.

6 0
3 years ago
In the laboratory a student determines the specific heat of a metal. He heats 19.5 grams of copper to 98.27 °C and then drops it
siniylev [52]

Answer:

The specific heat of copper is 0.37 J/g°C

Explanation:

<u>Step 1: </u>Data given

Mass of copper = 19.5 grams

Initial temperature of copper = 98.27 °C

Mass of water = 76.3 grams

Initial temperature of water = 24.05 °C

Final temperature of water and copper = 25.69 °C

<u>Step 2:</u> Calculate specific heat of copper

Qgained = -Qlost

Q = m*c*ΔT

Qwater = -Qcopper

m(water) * c(water) * ΔT(water) = - m(copper) * c(copper) *ΔT(copper)

⇒ with m(water) = 76.3 grams

⇒ with c(water) = 4.184 J/g°C

⇒ with ΔT(water) = T2-T1 = 25.69 - 24.05 = 1.64

⇒ with m(copper) = 19.5 grams

⇒ with c(copper) = TO BE DETERMINED

⇒ with ΔT(copper) = T2-T1 = 25.69 - 98.27 = -72.58

76.3 * 4.184 * 1.64 = - 19.5 * c(copper) * -72.58

523.552 = 1415.31 * c(copper)

c(copper) = 0.37 J/g°C

The specific heat of copper is 0.37 J/g°C

3 0
3 years ago
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