Answer:
a rection will most likely occur if the colliding partilces have the proper orientation and energy. The reactions occur becasue the molecules collide. But not all the collisions result in a reaction. The collisions have to meet some requirements
Explanation:
A reaction will most likely occur if the colliding partilces have the proper orientation and energy.
What is a chemical reaction?The chemical reaction is a process in which one or more substances, the reactants, are converted to one or more different substances, the products.
Chemical reactions require collisions between reactant species.
These reactant collisions must be of proper orientation and sufficient
energy in order to result in product formation.
The collisions have to meet some requirements.
Molecules must collide in order to react.
In order to effectively initiate a reaction, collisions must be sufficiently energetic (kinetic energy) to break chemical bonds; this energy is known as the activation energy.
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Every organism is an ecosystem receives energy from another source.Which of these organism receives its energy directly from the sun? A-Grass C-deer B-fungus D-hawk
Answer:
The answer is grass
Explanation:
Grass is a plant, meaning it undergoes photosynthesis to receive its energy from the sun.
Answer:
A-Grass
Explanation:
grass receives its energy from the sun in a process called photosynthesis, the chromophil in the plant foliage transforms sunlight into glucose and this chemical is converted into energy after several processes.
HCl(aq)+NaOH(aq)→NaCl(aq)+H2O(l)
A student was given the task of titrating a 20.mL sample of 0.10MHCl(aq) with 0.10MNaOH(aq). The HCl(aq) was placed in an Erlenmeyer flask. An equation for the reaction that occurs during the titration is given above.
f) If the student started with 46 grams of NaOH, how much H2O should be produced?
Answer:
0.036 g
Explanation:
0.036 g of water should be produced.
From the equation of reaction, 1 mole of HCl requires 1 mole of NaOH in order to produce 1 mole of H2O.
20 mL of 0.10 M HCl contains 20/1000 x 0.10 = 0.002 moles of HCl
46 grams of NaOH contains 46/40 = 1.15 moles of NaOH
It thus means that the HCl is a limiting reagent in the reaction.
From the equation:
1 mole HCl will produce 1 mole of H2O.
0.002 HCl with therefore produce 0.002 x 1/1 = 0.002 mole of H2O
Mass of water produced = mole x molar mass
0.002 x 18 = 0.036 g.
Hence, 0.036 g of water would be produced.
What is the pH of a solution that has [H+] = 3.0 × 10–6 M?
4.32
5.52
6.0
7.76
A cup of black coffee has a pH of 5.
What is the hydrogen ion concentration of this cup of coffee?
4.0 × 10–4 M
3.0 × 10–5 M
1.0 × 10–5 M
4.0 × 10–6 M
Which example's concentration is indicated by a solution’s pH ?
H2O
H+
OH−
H2O2
What is the pH of a solution with a [H+] of 1.0×10−4 M ?
2.0
3.0
4.0
8.0
WILL MARK BRAINLIEST
Answer:
1`. B)5.52
2. C) 1.0 x 10-5M
3. B) H+
4. C) 4.0
The pH of a solution with [H+] = 3.0 × 10–6 M is 5.52. A cup of black coffee with a pH of 5 has a hydrogen ion concentration of 1.0 × 10–5 M. The concentration of a solution's pH is indicated by H+.
Explanation:The pH of a solution can be determined using the equation pH = -log[H+]. In the first question, the solution has a hydrogen ion concentration of 3.0 × 10–6 M, so the pH is calculated as -log(3.0 × 10–6) = 5.52. In the second question, a coffee with a pH of 5 has a hydrogen ion concentration of 1.0 × 10–5 M, which can be calculated using the same equation. The correct option is 1.0 × 10–5 M. In the third question, the hydrogen ion concentration is a characteristic of a solution's pH, so the correct option is H+.
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