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balu736 [363]
3 years ago
9

Please answer these questions

Chemistry
2 answers:
lions [1.4K]3 years ago
7 0
I found number one
Atoms are not drawn to scale. Molecules of compounds have atoms of two or more different elements. For example, water (H2O) has three atoms, two hydrogen (H) atoms and one oxygen (O) atom. Methane (CH4), a common greenhouse gas, has five atoms, one of carbon (C) and four of hydrogen (H, see Fig.
VMariaS [17]3 years ago
3 0

Explanation:

1) Is imposible to determine an element from a simple drawing, more information is need or a higher level of details. Also, a "red blob of atoms" sounds like the  description of a molecule (a union of two or more atoms) that may or may not be formed by only one element.

2) There are 92 natural elements, the other ones are synthetic and/or radioactive. You can identify them in the periodic table because their molecular weights are between ( ).

3) False, a molecule is a particular arrangement of atoms that can be from one or more elements. An element is a particular arrangement of atomic particles (neutrons, protons and electrons.)

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Convert 3 moles of h2o into grams
lilavasa [31]
To convert 3 mol H2O to grams, just multiply by the molar mass of H2O. 

<span>3 mol H2O * 18 g H2O / 1 mol H2O = 54 g H2O 
 
Hope this helped.</span>
4 0
3 years ago
How is 0.00069 written in scientific notation?
vfiekz [6]
6.9 x 10^-4 would be .00069 written in scientific notation
4 0
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A friend tells you that plants grow and gain mass only because of the nutrients they pull out of the soil. It this statement tru
Nutka1998 [239]
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5 0
3 years ago
A light bulb has a resistance of 96.8 Ω. What current flows through the bulb when it is connected to a 120 V source of electrica
Finger [1]

Answer:

I = 1.23 A

Explanation:

Given that,

The resistance of the lightbulb, R = 96.8 Ω

Voltage, V = 120 V

We need to find the current flows through the lightbulb. Let the current be I. We can use the ohm's law to find it i.e.

V=IR\\\\I=\dfrac{V}{R}\\\\I=\dfrac{120}{96.8}\\\\I=1.23\ A

So, the current flows through the bulb is 1.23 A.

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How many molecules of water can fit in one teaspoon?
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About 5 millimeters which weighs about 5 grams. Hope this helps! ^-^

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