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marta [7]
3 years ago
7

Although chemical digestion occurs throughout the digestive system, it mostly occurs in the A esophagus and stomach

Chemistry
1 answer:
blagie [28]3 years ago
5 0
D: stomach and intestines :)
You might be interested in
c) A substance has a high melting point and conducts electricity. What type of structure does it have
trapecia [35]

Answer:

Metallic structure

Explanation:

They have a high melting point due to the strong forces of attraction between the positive ions (cations) and the delocalised electrons. Moreover, they conduct electricity due to the sea of delocalised electrons.

<em>[Extra: It could be an ionic compound since they also have a high melting point, however they only conduct electricity in liquid or aqeouus state.]</em>

6 0
2 years ago
What would be the temperature change if 3.0g of water absorbed 15 J of heat?
Black_prince [1.1K]
MARK AS BRAINLIEST! :)))

3 0
3 years ago
When the NaOH dissolves, the temperature of the solution increases from 18.2 C to 24.5 C. Assuming the specific heat and density
ELEN [110]

Answer:

The heat of solution is 1.05 kJ/mol

Explanation:

NaOH → Molar mass 40 g/m

This is the mass in 1 mol

Calorimetry formula:

Q = m . c . ΔT

ΔT = T° final - T° initial = 24.5°C - 18.2°C = 6.3°C

mass = 40 g

c = 4.186 kJ/kg°C (the same as water)

So we have to convert 40 g to kg

40 g/1000 = 0.04 kg

Q = 0.04 kg . 4.186 kJ/kg°C . 6.3 °C = 1.05 kJ

7 0
3 years ago
What is the name of compound 10H2O
Romashka-Z-Leto [24]

Answer:

sodium carbonate decahydrate

Explanation:

Usually we would the molar mass of Na2CO3 x 10 H2O. This is where the name comes from.

3 0
3 years ago
Read 2 more answers
Predict whether the equilibria
IceJOKER [234]

Answer:

The correct answer is option 4.

Explanation:

Any change in the equilibrium is studied on the basis of Le-Chatelier's principle.

This principle states that if there is any change in the variables of the reaction, the equilibrium will shift in the direction to minimize the effect.

For exothermic reaction :ΔH = negative

  • If the temperature is increased, so according to the Le-Chatlier's principle , the equilibrium will shift in the direction where decrease in temperature occurs.So, equilibrium will move in backward direction.
  • If the temperature is decreased , so according to the Le-Chatlier's principle , the equilibrium will shift in the direction where increase in temperature occurs.So, equilibrium will move in forward direction.

For the given equation:

I) CO_2(g) + 2 NH_3(g) \leftrightharpoons CO(NH_2)_2(s) + H_2O(g) ,ΔH° = -90 kJ

On Increasing the temperature

This is an exothermic reaction, backward reaction will decrease the temperature. Hence, the equilibrium will shift in the left direction that is towards reactants.

II) Ni(s) + 4 CO(g)\leftrightharpoons Ni(CO)4(g) ,ΔH° = -161 kJ

On Increasing the temperature

This is an exothermic reaction, backward reaction will decrease the temperature. Hence, the equilibrium will shift in the left direction that is towards reactants.

3 0
3 years ago
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