A. Heat does not transfer between his body and the water
B. Heat transfers to his body from the water by conduction
C. Heat transfers from his body to the water by convection
D. Heat transfers from his body to the water by conduction
Thank you !
Answer is: B. Heat transfers to his body from the water by conduction.
Thermal conductuction is the transfer of heat through physical contact. Thermal conduction is the transfer of heat by microscopic collisions of particles.
Heat spontaneously flows from a hotter (in this example water) to a colder body (in this example human body).
The process of heat conduction depends on four basic factors: the temperature gradient, the cross section of the materials involved, their path length and the properties of those materials.
Answer: cations
Explanation:
Metals are defined as the elements which loose electrons to attain stable electronic configuration. If an atom looses electrons, it leads to the formation of positive ions known as cations.
For Example: Sodium looses 1 electron to form ions.
Non-metals are defined as the elements which gain electrons to attain stable electronic configuration. If an atom gains electrons, it leads to the formation of negative ions known as anions.
For Example: Fluorine gains 1 electron to form ions.
Answer:
cations
Explanation:
metals are made of postively charged ions
Yes, Sharpies contain volatile solvents—and when inhaled these solvents can produce a "high." The effects of inhalants (including Sharpies) can be similar to those of alcohol and include slurred speech, lack of coordination, euphoria, and dizziness.
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Answer:
The main basis for the classification system is the way rocks were formed. With these criteria there are three different types of rocks:
B
U
T-
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Answer: 1.5
Explanation:
The acid, HCIO4 ionizes to give hydrogen ion (H+) and a conjugate base as follows:
HCIO4(aq) <---> H+(aq) + CIO4-(aq)
Hence, the H+ has also have a concentration of 0.0282 M
Mathematically, pH is expressed as:
pH = -log(H+), where H+ is the concentration of hydrogen ion.
So, for HCIO4
pH = - log (0.0282 M)
pH = - (-1.5497) (The two minus signs will cancel out)
pH = 1.5497
Round the pH value to the nearest tenth as 1.5
Thus, the pH of 0.0282 M of HCIO4 is 1.5, also HCIO4 is strongly acidic since pH values less than 7 are regarded as acidic.