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Chemistry
Chemistry
Middle School
An object with a mass of 24g and a volume 6mL has a density of? a. 0.25 g/mLb. 6 g/mL c. 144 g/mL
Chemistry
College
Water is composed of one atom of oxygen and two atoms of
Chemistry
College
The mass of 1 gram:is kept as a standard platinum cylinder in Franceequals 1 cmis .01 kgequals the mass of 1 mL of water at 4C
Chemistry
High School
Please answer correctly !!!!!!! Will mark brainliest !!!!!!!!!!!!
Chemistry
High School
It is found that after 24!hours 1/8 of the mass of a sample of a radio-active isotope remains What is the half-life of this isotope?
Chemistry
High School
Explain what a cold front is.
Chemistry
High School
The mass of an object is 24g and the volume of the object is 16 mL. Calculate thedensity of the object?
Chemistry
High School
when is an object in free fall
Chemistry
High School
Question 3 (4 points)A dipole bond is formed when electrons are not shared equally in a covalent bond, resulting in a partial negative charge on one end of themolecule and a partial positve charge on the other end.O TrueO False
Chemistry
College
Acetylsalicylic acid (C9H8O4) is a monoprotic acid commonly known as aspirin. A typical aspirin tablet, however, contains only a small amount of the acid. In an experiment to determine its composition, an aspirin tablet was crushed and dissolved in water. It took 14.40 mL of 0.1466 M NaOH to neutralize the solution. Calculate the number of grains of aspirin in the tablet. (One grain = 0.0648 g and the molar mass of aspirin = 180.2 g/mol.)
Chemistry
College
The specific heat of silver is 0.24 J/gC. How many joules of energy are needed to warm 4.37 g of silver from 25.0C to 27.5C?A. 2.6 JB. 46 JC. 0.14 JD. 0.022 J
Chemistry
High School
How can you tell if an element is a metal or a nonmetal??
Chemistry
High School
An ice cube is placed in a glass of water. Which of the following best explains theheat transfer?A: The thermal is movingfrom the water to from the ice cube into the water into the watercausing thetemperature ofthe water toincrease.B: the thermal energy is moving from the water to the ice cube causing the temperature of the water to decreaseC: the thermal energy is moving from the ice cube into the water causing the temperature of the water to increaseD: the thermal energy is moving from the ice cube into the water causing the temperature of the water to decrease.
Chemistry
College
An empty graduated cylinder weighs 45.8772 g. After 20.0 mL of a liquid is added, the cylinder and its contents weigh 77.7572 g. What is the density of the liquid in g/mL?
Chemistry
High School
Infer Why is a mechanism needed to remove carbondioxide gas from your cells?
Chemistry
College
Find the number of moles of iron atoms obtainfrom 320kg of iron (3) oxide
Chemistry
Middle School
I will brainly And 5 star rate
Chemistry
College
Which of the following is an example of work: bowling or reading? How do you know?
Chemistry
Middle School
I need it done assap
Chemistry
High School
Which of the following models best demonstrates the law of conservation of mass?? (LOOK AT THE PICTURES)!!
Chemistry
College
The thermite reaction occurs when iron(III) oxide reacts with solidaluminum. The reaction is so hot that molten iron forms as a product.>Fe2O3(s) + Al(s) Fe(C) + Al2O3(s)What mass of aluminum should be used in order to completelyconsume 10.0 g Fe2O3(s)? If the reaction described produces 5.3 gAl2O3(s), what is the percent yield?
Chemistry
College
3. Using the periodic table,What is the average atomic mass of bromine?What is the average atomic mass of magnesium?How do your calculated answers in #1 and #2 compare to those on the periodic table?
Chemistry
High School
what is octane number
Chemistry
High School
Help meh, please !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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