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vova2212 [387]
3 years ago
10

Do bacteria help people?? This is science but there is no tab

Chemistry
1 answer:
Charra [1.4K]3 years ago
4 0

Answer:

Yes

Explanation:

Some bacteria is good for you like the bacteria in your digestive system, which helps with breaking down food and keeping you healthy

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In which space on the Venn diagram would you write coniferous trees?
Ad libitum [116K]

Answer:

B

Explanation:

Conifers live in cooler regions

5 0
3 years ago
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What do scientists use to predict the locations of electrons in atoms?. A) probability. B) algebra. C) geometry. D) ratios and p
aev [14]
The correct answer is A) probability

That is because precise electron locations cannot be calculated, only predicted based on previous calculations. They cannot know whether or not an electron will be or will not be somewhere specific.
4 0
4 years ago
The molecular weight of KMnO4 is 158 g/mol. If you wanted to make 500 mL of a 0.1M stock solution of KMnO4, how much solid KMnO4
labwork [276]

Solid KMnO₄ needed = 7.9 g

<h3>Further explanation</h3>

Given

MW KMnO₄ = 158 g/mol

500 mL(0.5 L) of a 0.1M stock solution of KMnO₄

Required

solid KMnO₄

Solution

Molarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution

\large{\boxed {\bold {M ~ = ~ \frac {n} {V}}}

Input the value :

n = M x V

n = 0.1 M x 0.5 L

n = 0.05 mol

Mass KMnO₄ :

= mol x MW

= 0.05 x 158 g/mol

= 7.9 g

5 0
3 years ago
Define: Ion<br><br> Define: Polar Molecule<br><br> Define: Subscript<br><br> Define: Coefficient
solmaris [256]
Ion: forms when a neutral atom loses or gains electrons.
Polar molecule: a chemical species in which the distribution of electrons is not even.
Subscript: each element of an array is accessed by a number.
Coefficient: a number used to multiple a variable.
7 0
3 years ago
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What evidence exists for a more recent increase in greenhouse gas concentrations in the atmosphere
TiliK225 [7]

Answer:

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-ice core data shows links between CO2 and temperature, with a recent increase in both

-data from ice cores and other proxies show increases in CO2, CH4, and N2O since the Industrial Revolution

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3 years ago
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