1.22 mg is the same as .022 grams. One gram equals 1000 mg. Convert mg to grams by dividing mg by 1000mg/gm. Volume = mass over density. Volume equals .022 grams over .754 grams/cm3 which equals .029 or .03cm3. 2.weight in kg times gravity constant. Weight in newtons equals 10kg times 9.8m/s2 that equals 98 newtons.
1. The number of electrons in the atom is 3.
The atom is not stable because the proton and neutron ratio is greater than 1.5
2. The gas produced is considered evidence that a chemical reaction occurred because it is a new product.
3. The graduated cylinder measures the volume of water, the electronic balance measures the mass of water, and the density of water is obtained from the ratio of the mass and volume of water measured.
<h3>What are protons and neutrons?</h3>
Protons are the sub-atomic particles found in the nucleus of atoms that are positively charged. The proton number is equal to the electron in neutral atoms.
Neutrons are the sub-atomic particles found in the nucleus of atoms that are neutral or possess no charge.
The ratio of the protons and neutrons given stability to the atom of its is is not greater than 1.5
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Answer:
42 days
Explanation:
Half life = 8.4 days
Starting mass = 40.0 g
Time = ?
Final Mass = 1/16 * 40 = 2.5 g
First Half life;
Remaining mass = 40 / 2 = 20g
Second Half life;
Remaining mass = 20 / 2 = 10g
Third Half life;
Remaining mass = 10 / 2 = 5g
Fourth Half life;
Remaining mass = 5 / 2 = 2.5g
Time = Number of half lives * Duration of half life = 5 * 8.4 = 42 days
The bond angle varies depending on the type of bond between carbon atoms. For a single bond, its type is the sp³ hybridization. For this type, the bond angle between the carbon atoms is 109.5°. For sp² hybridization (double bonds), the bond angle is 120°. For sp hybridization (triple bonds), the bond angle is 180°. Thus,
A. This is an alcohol which consists of single bonds. So, the angle is 109.5°.
B. The angle is 180° because of the triple bond.
C. H₂C=C=CH₂ consist of a double bond, so the angle is 120°