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3 years ago

What is the word equation for the reaction between magnesium and hydrochloric acid. pls help

2 answers:

8 0

Magnesium reacts withhydrochloric acid according to the equation: Mg (s) + 2 HCl (aq) --> MgCl 2 (aq) + H 2 (g) This demonstration can be used to illustrate the characteristicreaction of metals with acid, a single replacement reaction, or to demonstrate the generation of hydrogen gas.

kenny6666 [7]3 years ago

8 0

Mg + 2HCl -> MgCl2 + H2

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4. An object's resistance to any change in its motion is the ___ of the object. (1 point)

lawyer [7]

Answer:

Acceleration

Explanation: Force is how much one thing is being applied so it is not that and inertia is something sitting still so therefore using process of elimination, it is acceleration.

8 0

3 years ago

"The statements in the following multiple choices deal with various aspects of the relationship between vapor pressure and inter

solong [7]

Answer:

Explanation:

a ) false.

NH₃ is more polar molecule than PH₃ so inter-molucular attraction is greater in NH₃ ( hydrogen bond ) . Hence vapour pressure is low for NH₃ .

b ) false .

The average kinetic energy of boiling water molecules is lower on a mountaintop than it is at sea level. It is so because water boils at lower temperture on mountain and kinetic energy of molecules depends upon temperature .

c ) false

vapour pressure depends upon temperature .

d ) True

CCl4 is more volatile than CBr4

e ) false

vapour pressure increases as temperature increases.

8 0

3 years ago

What volume of benzene (C6H6, d= 0.88 g/mL, molar mass = 78.11 g/mol) is required to produce 1.5 x 103 kJ of heat according to t

Anton [14]

Answer:

We need 42.4 mL of benzene to produce 1.5 *10³ kJ of heat

Explanation:

Step 1: Data given

Density of benzene = 0.88 g/mL

Molar mass of benzene = 78.11 g/mol

Heat produced = 1.5 * 10³ kJ

Step 2: The balanced equation

2 C6H6(l) + 15 O2(g) → 12 CO2(g) + 6 H2O(g) ΔH°rxn = -6278 kJ

Step 3: Calculate moles of benzen

1.5 * 10³ kJ * (2 mol C6H6 / 6278 kJ) = 0.478 mol C6H6

Step 4: Calculate mass of benzene

Mass benzene : moles benzene * molar mass benzene

Mass benzene= 0.478 * 78.11 g

Mass of benzene = 37.34 grams

Step 5: Calculate volume of benzene

Volume benzene = mass / density

Volume benzene = 37.34 grams / 0.88g/mL

Volume benzene = 42.4 mL

We need 42.4 mL of benzene to produce 1.5 *10³ kJ of heat

4 0

2 years ago

A metal oxide reacts chemically with water to form a base in the reaction shown below. If the temperature of the metal oxide and

Alla [95]

increase the rate of chemical change.

Explanation:

The reaction of the metal oxide with water to form a base in the presence of a spike in temperature will lead to an increase in the rate of chemical change.

Temperature change has considerable effect on reaction rates.

Temperature is directly proportional to the average kinetic energy of reacting particles.
Reaction rates varies directly with a spike in temperature.
It has been known that for every 10°C rise in temperature, above the room temperature, reaction rates become double or tripled.
Temperature increases the kinetic energy of each of the reacting particles.
Many of the reacting particles also acquires an energy greater than or equal to the activation energy of the reaction.
The frequency of ordinary collisions and effective collisions per unit time increases.

Learn more;

Activation energy brainly.com/question/3930233

#learnwithBrainly

6 0

2 years ago

Name two animals that are omnivores. Give an example of a plant and an animal that each one might eat.

Zinaida [17]

Two animals that are omnivores are:
Bears and Badgers
Bears eat clover and other plants, and they eat salmon and other animals.
Badgers eat plants such as different fruits like pears and plums, and Badgers eat earthworms, insects, amphibians (such as frogs) reptiles and birds.

7 0

3 years ago

Read 2 more answers