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Oxana [17]
3 years ago
5

X(OH)2 + 2HCl XCl2 +2H2O

Chemistry
1 answer:
lesya692 [45]3 years ago
8 0

Answer:

dont cheat guys

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Determine the kinetic energy of a 150 kg roller coaster car that is moving with a speed of 15 m/s
morpeh [17]

Answer:

K.E = 19125 j

Explanation:

Given data:

Mass = 150 Kg

Speed of car = 15 m/s

K.E = ?

Solution:

Formula:

K.E = 1/2 (mv²)

K.E = Kinetic energy

m = given mass

V = speed

now we will put the values in formula.

K.E = 1/2 (mv²)

K.E = 1/2 (150 Kg) (15²)

K.E = 1/2 150 Kg × 225 m²/s²

K.E = 0.5 × 225 m²/s² ×150 Kg

K.E = 19125 j

8 0
3 years ago
What products are formed when aqueous solutions of KBr and Pb(NO3)2 are mixed? KNO3 and PbBr K(NO3)2 and PbBr KNO3 and PbBr2 KPb
Yuliya22 [10]
All you have to do is combine the two.
4 0
4 years ago
Read 2 more answers
Steam condenses into liquid water (the steam is the system). In this process .... Group of answer choices the heat leaves the sy
Vedmedyk [2.9K]
I need points i’m so srry bro
5 0
4 years ago
What kind of solution would have a ka value that is much less than 1?
liberstina [14]

Answer:

D. A weakly acidic solution.

4 0
3 years ago
Calculate the heat absorbed by a sample of water that has a mass of 45.00 g when the temperature increases from 21.0oC to 38.5 o
Elenna [48]

Answer:

The heat absorbed by the sample of water is 3,294.9 J

Explanation:

Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.

The sensible heat of a body is the amount of heat received or transferred by a body when it undergoes a temperature variation (Δt) without there being a change of physical state (solid, liquid or gaseous). Its mathematical expression is:

Q = c * m * ΔT

Where Q is the heat exchanged by a body of mass m, made up of a specific heat substance c and where ΔT is the temperature variation.

In this case:

  • Q=?
  • m= 45 g
  • c= 4.184 \frac{J}{g*C}
  • ΔT= Tfinal - Tinitial= 38.5 C - 21 C= 17.5 C

Replacing:

Q= 4.184 \frac{J}{g*C} * 45 g* 17.5 C

Solving:

Q=3,294.9 J

<u><em>The heat absorbed by the sample of water is 3,294.9 J</em></u>

<u><em></em></u>

8 0
3 years ago
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