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Evgesh-ka [11]
3 years ago
13

What is the identity of the element that has 19 protons and 22 neutrons?

Chemistry
1 answer:
Degger [83]3 years ago
3 0

Answer:

A titanium ion

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5. A football field is about 100 meters long. If it takes a person 20 seconds to run its length, how fast (what speed) were they
EleoNora [17]

Answer:

Speed, v = 5 m/s

Explanation:

The length of the football field, l = 100 m

the person takes 20 seconds to run its length

v=

t

d

v=

20 s

100 m

v=5 m/s

7 0
3 years ago
How much energy is added to change 180g of liquid water to gas at 100 degrees Celsius
Finger [1]

Answer:

40.7 kJ  

Step-by-step explanation:

The formula for the heat, q, needed to evaporate a liquid is

q = mΔHvap


<em>Data:  </em>

        m = 180 g

ΔHvap = 2260 J/g

<em>Calculation: </em>

q = 180 g × 2260 /1

q = 40 700 J = 40.7 kJ

7 0
3 years ago
HELPPP!!! In reaction 2Sr+O2=2SrO how many moles of Oxygen will be needed to react with 36.9g of SrO?
Step2247 [10]

6000 I pretty sure tell me if it's right

6 0
2 years ago
8. Neil pogo sticks from his locker to his science class. He travels 8 m east then 8 m west
jeyben [28]

Answer:

12

Explanation:

5 0
3 years ago
Felix adds salt to the boiling water, what will he have in the pot?
Pani-rosa [81]
A mixture called a solution, I think.
8 0
3 years ago
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