Answer:
the positivity charged protons in the nucleus attract the negatively charged elections.bas the number of protons in the nucleus increases, the electronegativity or attraction will increase
Answer:
The scientists use results from the new experiments to change the existing explanations of how nature functions. The world is changing continuously. There are outcomes, which have been obtained from the scientific studies performed earlier, which may no longer be accurate at present because of certain factors that may not have been discovered or present in those times. Other scientific findings may also be further acknowledged as true from the outcomes of the new experiments.
Scientists use results from new experiments to validate or refute existing theories and to explore new scientific territory. This is done by gathering and analyzing data from these experiments, ultimately leading to more informed and detailed theories.
Scientists use results from new experiments to both confirm existing theories and explore new territories of knowledge. Conducting an experiment helps scientists gather data and observations. These results then provide evidence that either supports or refutes a hypothesis, leading to more advanced and precise scientific theories. For example, when Albert Einstein proposed his theory of relativity, further experiments such as the Eddington experiment during a solar eclipse provided data evidence that supported his theory.
#SPJ3
a. True
b. False
A. gas
B. solid
C. liquid
D. plasma
Answer:
a solid
Explanation:
because because gas would excerpt forced throughout the whole container and plasma would be too hot for the plastic container and liquid would flow throughout the container touching the sides and solid is the only one that would probably only touch the bottom of the plastic container exerting force through there
Answer:
1. D. cal......
2.A. iron
3. D
4.2.44j/g°C A
5,Lf=334J/g B
Explanation:
1: Which of the following is the abbreviation for a unit of energy? A. K / B. °C/ C. W / D. cal...............
calorie is the unit of energy
#2: A 200 g block of a substance requires 1.84 kJ of heat to raise its temperature from 25°C to 45°C. Use the table attached to identify the substance. A. iron/ B. aluminum/ C. gold/ D. copper.....................
Q=mcdt
1840=0.2*C*(45-25)
C=460J/KgK
if the specific heat capacity is the above then he substance is iron
#3: In a calorimeter, the temperature of 100 g of water decreased by 10°C when 10 g of ice melted. How much heat was absorbed by the ice? A. 418 kJ / B. 100 kJ / C. 10 J / D. 4.18 kJ .................
Q=mcdT
Q=0.1*10*4180
Q=4180j. answer D
.#4: The amount of heat needed to raise the temperature of 50 g of a substance by 15°C is 1.83 kJ. What is the specific heat of the substance? A. 2.44 J/g-°C / B. 2.22 J/g-°C / C. 2.13 J/g-°C / D. 2.05 J/g-°C ................
Q=mcdT
1830=50/1000*C*15
C=2440j/kg/k
change it to j/g°C
2.44j/g°C A
#5: In a calorimeter, 3.34 kJ of heat was absorbed when 10 g of ice melted. What is the enthalpy of fusion of the ice? A. 6.68 J/g / B. 334 J/g / C. 6.68 kJ/g/ D. 334 kJ/g
Q=mLf
Lf=enthalpy of fusion
3340/10=Lf
Lf=334J/g B
Enthalpy of fusion quantity of heat to convert 1 unit mass of a solid to liquid without any noticeable change in temperature.