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abruzzese [7]
3 years ago
8

____ KOH + H3PO4 = K3PO4 + H20

Chemistry
1 answer:
sleet_krkn [62]3 years ago
6 0

Answer:

3 KOH + H3PO4 ----> K3PO4 + 3H2O

Explanation:

Ensure the number of atoms on both sides are the same.

Left: 3K, 7O, 6H, 1P

Right: 3K, 7O, 6H, 1P

Hence, the equation is now balanced.

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: How much energy is required to heat an iron nail with a mass of 25.5 grams from 65°C until it becomes red hot at 720°C?
Evgen [1.6K]

Q = mct  

-Q= energy in Joules  

-m = mass in grams  

-c= specific heat capacity in J/g degree C  

-t = delta temperature in degrees Celsius  

So,  

Q = m c t  

Q = (7 grams)(0.448J/g C)(750 C - 25 C)  

Q = 2273.6 J  

Your final answer = 2273.6 Joules

8 0
3 years ago
Which physical method can separate a mixture of steel ball bearings and marbles
Lana71 [14]
Sorting is a method that could separate those materials

6 0
3 years ago
Read 2 more answers
1. Review the information in the table below. Use the information to calculate rate of how many sandwiches are made in a 10-minu
PilotLPTM [1.2K]

Answer:

The answer to your question is given below.

Explanation:

Rate is simply defined as quantity per unit time. Mathematically it is represented as:

Rate = Quantity /time

Thus, we can obtain the rate as follow:

1. Quantity = 20 sandwich

Time = 10 mins

Rate =?

Rate = Quantity /time

Rate = 20/10

Rate = 2 sandwich per mins

2. Quantity = 30 sandwich

Time = 10 mins

Rate =?

Rate = Quantity /time

Rate = 30/10

Rate = 3 sandwich per mins

3. Quantity = 40 sandwich

Time = 10 mins

Rate =?

Rate = Quantity /time

Rate = 40/10

Rate = 4 sandwich per mins

4. Quantity = 50 sandwich

Time = 10 mins

Rate =?

Rate = Quantity /time

Rate = 50/10

Rate = 5 sandwich per mins

Thus, the complete table is given as follow:

Quantity >> Unit of measure >> Rate

10 >>>>>>> 10 min >>>>>>>>>> 1

20 >>>>>>> 10 min >>>>>>>>>> 2

30 >>>>>>> 10 min >>>>>>>>>> 3

40 >>>>>>> 10 min >>>>>>>>>> 4

50 >>>>>>> 10 min >>>>>>>>>> 5

4 0
3 years ago
Como purificar a agua
hichkok12 [17]

Answer:

Usando un purificador que se hace con filtros

Explanation:

5 0
3 years ago
What type of chemical reaction is CH4+2O2>CO2+2H2O
Nikitich [7]

Answer:

<h2> Incomplete combustion </h2>

Explanation:

CH4 + 2O2 → CO2 + 2H2O Incomplete combustion – carbon monoxide and water.

<h2>combustion reactions </h2>

Exothermic Reaction In this type of reaction, generally energy in form of heat is released. CH4 + 2O2---- CO2 + 2H2O + energy Methane Oxygen Carbon dioxide For example all combustion reactions are exothermic.

3 0
4 years ago
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