Snow in New York City weathers gargoyles on buildings by which process?Carbonation
Abrasion
Oxidation
Acid precipitation

Answers

Answer 1

Answer:

Answer: Acid Precipitation

Explanation:

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What makes hydrogen peroxide a polar molecule?

Answers

C. polar bonds and asymmetrical structure
If the molecule contains polar bonds but it has a symmetrical structure, the polar bonds will cancel each other out so the overall molecule will be non-polar.
On the other hand, if the molecule contains polar bonds but has an asymmetrical structure, then the polar bonds won't cancel each other out, so the overall molecule ends up being polar.

A solution of ammonia and water contains 1.80×1025 water molecules and 7.00×1024 ammonia molecules. How many total hydrogen atoms are in this solution?

Answers

Answer:

6.40x10²⁵ hydrogen atoms

Explanation:

The solution contains:

1.80x10²⁵ water molecules (H₂O)
7.00x10²⁴ ammonia molecules (NH₄)

We need to calculate the total of hydrogen atoms (H) in the solution.

Each water molecule (H₂O) has 2 hydrogen atoms
Each ammonia molecule (NH₄) has 4 hydrogen atoms

Lets now calculate the number of hydrogen atoms in the solution:

total H atoms = (H atoms in water molecules) + (H atoms in ammonia molecules)

total H atoms = (2 x 1.80x10²⁵) + (4 x 7.00x10²⁴) =

total H atoms = 3.60x10²⁵ + 2.80x10²⁵ = 6.40x10²⁵

1 water molecule contains 2H atoms H atoms in 4.20*10^25 water molecules = 8.4*10^25 H atoms 1 NH3 molecule contains 3 H atoms H atoms in 6.00*10^24 NH3 atoms = 3*6.00*10^24 = 1.8*10^16 H atoms.

Total H atoms = 8.4*10^25 + 1.8*10^25 = 1.02*10^16 H atoms

Calculate the number of atoms in 4g of bromine molecule.(Br).(avogadro 's constant =6.02 x 10²³ mol-¹; Br=80)

Answers

Answer:

$\n N=n * N_(A)$

We do not have $n$ - the amount of substance.

$n=(m)/(M)\n$

The molecular weight ( $M$ ) of Bromine is 80.

$n=(4)/(80) = 0.05 \text{ mol}$

$N = 0.05 * 6.02 * 10^(23) = 0.301 * 10^(23)$

Which scientist performed the cathode ray experiment leading to the discovery of electrons

Answers

The scientist that performed the cathode ray experiment leading to the discovery of electrons is the scientist Sir Joseph John Thompson or J.J. Thompson. It was theorized after the discovery that electrons are present in the atom. In this model, the atom is composed mainly of electrons. It was describe as plum pudding because the electrons are dispersed within the atom.

John Thompson is the answer

What are some of the activities performed during experiment

Answers

Make a hypothesis or prediction about the results of the experiment. Determine the methods involved in conducting the experiment. Acquire necessary helpers and materials. Test the materials and the experimental design, as needed, before conducting the experiment.

PLEASE ANSWER AS QUICKLY AS POSSIBLE THANK YOU SO MUCHEli uses this thermometer to measure the temperature of a liquid. He reports his
results as 36 degrees. Is this a good description?

A. This is a perfect description because it gives both a number and a unit

B. This description is clear and can be understood by other measures

C. This description needs a unit describing the system of measurement.

D. This description needs a decimal point to be a good description