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ChemistryChemistry
Haylie Sims
Why are comets unlikely to be able to support life? A. A comet's environment is not stable. B. A comet does not have an atmosphere. C. A comet does not have a reliable energy source. D. all of these
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ChemistryChemistry
Scout
Na + leaks through neuron membranes faster than k + because of the properties of the non-gated leak channels. na + leaks through neuron membranes faster than k + because of the properties of the non-gated leak channels.

a. True

b. False
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ChemistryChemistry
Haleigh Booker
Fe2O3 is the major component in rust. How many atoms are in one molecule of rust? A. 1 B. 2 C. 3 D. 5
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ChemistryChemistry
Malachi Dunlap
Hat is the pH of a solution with a hydroxide ion concentration of 10-6M? A. pH = 12 B. pH = 8 C. pH = 6 D. pH = 7
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ChemistryChemistry
Cristopher Boyer
A silver block, initially at 58.5°C, is submerged into 100.0 of water at 24.8°C in an insulated container. The final temperature of the mixture upon reaching thermal equilibrium is 26.2 °C. What is the mass of the silver block?
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ChemistryChemistry
Zion Collins
Sodiun reacts with water to give alkali solution and hydrogen gas.

a) construct a balance chenical reaction for the reaction

b) How many moles of sodiun metal react with water to make 45 dm3 of hydrogen gas and a sodiun hydroxide solution
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ChemistryChemistry
Sloan
Why are some ions such as chloride and sodium more stable than their atoms?
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ChemistryChemistry
Guest
What are the 3 types of catalyst?
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ChemistryChemistry
Reilly Mack
What is carbons amount of electrons!
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ChemistryChemistry
Clara Hanna
what is the limiting reactant when 1.50g of lithium and 1.50 g of nitrogen combine to form lithium nitride, a component of advanced batteries, according to the following unbalanced equation?
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ChemistryChemistry
Kimora Stout
Delta G = - nFE (How do you find n when different number of electrons)

One reaction transfers 3e, and the other 2e, Would n be - 6?
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ChemistryChemistry
Alejandra Higgins
Which steps were included in the process of cloning Dolly? Check all the apply.

A cell from the udder of a sheep was removed.

O Developing cells were placed in another sheep.

Organisms with desirable traits were crossed.

O The DNA from the egg of a sheep was removed.

The DNA from the udder cell was added to an egg cell.
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ChemistryChemistry
Luz Evans
What were the learning goals of this lab experiment? Check all that apply.

to use mass and temperature data to do computations involving heat

to demonstrate that different reactions have different enthalpies

to compute a reaction's enthalpy directly using mass measurements and a calorimeter

to compute the enthalpy of a reaction that cannot be measured directly using a simple calorimeter
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ChemistryChemistry
Aaron Terry
Which of the following actions is required of Boat A when approaching Boat B head-on in darkness or reduced visibility?

A) Give-way to the port side

B) Maintain course and speed

C) Use a visual distress signal

D) Give-way to the starboard side
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ChemistryChemistry
Dusty
How to separate sand from salt
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