The term accuracy best refers to which of following

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Answer 1

Answer: the extent to which a given measurement agrees with the standard value for that measurement

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A gas initial volume and pressure is 5m^3 and 101320 Pa and allows to expand up to 12m^3 then what is the final pressure?

Answers

Answer:

New pressure = 42216.66 Pa

Explanation:

Given that,

Initial volume, V₁ = 5 m³

Final pressure, P₁ = 101320 Pa

Final volume, V₂ = 12 m³

We need to find the final pressure of the gas. We know that the relation between pressure and volume is given by :

$P\propto (1)/(V)\n\nP_1V_1=P_2V_2\n\nP_2=(P_1V_1)/(V_2)\n\nP_2=(101320 * 5)/(12)\n\nP_2=42216.67\ Pa$

So, the new pressure is equal to 42216.66 Pa.

What type of bond is formed when an atom of potassium transfers an electron to a bromine atom?

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A Polar Covalent Bond is created when the shared electrons between atoms are not equally shared. This occurs when one atom has a higher electronegativity than the atom it is sharing with .

On the basis of electronegativity, which pair of elements is most likely to form monatomic ions? responses a. Ba and O b. Cs and Rb c. O and F d. Na and K

Answers

On the basis of electronegativity, elements that are far apart on the periodic table are more likely to form monatomic ions. This is because the larger the electronegativity difference between two elements, the more likely it is for one element to gain or lose electrons to achieve a stable electron configuration.

Out of the given options, the pair of elements that are the farthest apart on the periodic table is option d. Na (sodium) and K (potassium). Both sodium and potassium are in Group 1 (alkali metals), but potassium is located one period below sodium, making it more likely to form a monatomic ion due to the larger electronegativity difference.

Therefore, the answer is d. Na and K.

The element in Period 4 and Group 1 of the Periodic Table would be classified as aA. metal
B. metalloid
C. nonmetal
D. noble gas

Answers

Option A. Metal

Starting from K- Potassium up to As-Arsenic are all metals, the three elements are special: Se-Selenium(Non-Metals),Br-Bromine(Halogens),Kr-Noble gas still part of the row but not classified as metal.

An aqueous solution has a hydroxide-ion concentration of 1.0 x 10-3M. What is the pH of the solution? a 7
b -3
c 11
d 3

Answers

11 with pemdas, you have to multiply all by 3

A deer that grazes on grasses would be considered a decomposer

primary consumer

tertiary consumer

secondary consumer

Answers

They are primary consumers since they eat decomposers.

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The force most responsible for holding the nucleus of an atom together is the:

Why does vinegar dissolve in water but oil does not? A. Vinegar is nonpolar like water, but oil is polar. B. Vinegar is a pure substance, but oil is already a mixture. C. Vinegar is polar like water, but oil is nonpolar. D. Vinegar is a mixture, but oil is a pure substance like water.

4 Compared to the energy and charge of the electrons in the first shell of a Be atom, the electrons in the second shell of this atom have(1) less energy and the same charge(2) less energy and a different charge(3) more energy and the same charge(4) more energy and a different charge

What is the percent by mass of oxygen in propanal, CH3CH2CHO?(1) 10.0% (3) 38.1%(2) 27.6% (4) 62.1%