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7nadin3 [17]
3 years ago
7

How many atoms of hydrogen are there in HCOOH2?

Chemistry
1 answer:
mrs_skeptik [129]3 years ago
8 0

Answer:

2

Explanation:

g00gle

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Explain how to calculate the number of grams in 5.50 x 1022 atoms.
Neporo4naja [7]

Answer:

See below

Explanation:

From periodic table, find Mole Weight of the element in question

 this is the grams of the element in Avagadro's Number (6.022 x 10^23)  of atoms

   (5.50 x 10^22) / (6.022 x 10^23)  x mole weight = grams

7 0
1 year ago
Pllllzzzzzz help
Nookie1986 [14]

TMS has 12 protons which are all equivalent and four carbons, which are also all equivalent. This means that it gives a single, strong signal in the spectrum, which turns out to be outside the range of most other signals, especially from organic compounds.

8 0
2 years ago
The volume of a sample gas, initially at 25 C and 158 mL, increased to 450 mL. What is the final temperature of the sample of ga
Rashid [163]

Answer:

Final temperature of the gas is  576 ^{0}\textrm{C}.

Explanation:

As the amount of gas and pressure of the gas remains constant therefore in accordance with Charles's law:

                                       \frac{V_{1}}{T_{1}}=\frac{V_{2}}{T_{2}}

where V_{1} and V_{2} are volume of gas at T_{1} and T_{2} temperature (in kelvin scale) respectively.

Here V_{1}=158mL , T_{1}=(273+25)K=298K and V_{2}=450mL

So  T_{2}=\frac{V_{2}T_{1}}{V_{1}}=\frac{(450mL)\times (298K)}{(158mL)}=849K 

849 K = (849-273) ^{0}\textrm{C} = 576 ^{0}\textrm{C}

So final temperature of the gas is  576 ^{0}\textrm{C}.

3 0
3 years ago
1. Where do convection currents happen? crust inner core core mantle <br> pls help
Vikentia [17]

Answer:

Mantle

Explanation:

Convection currents in the Earth occur in the mantle. The core of the Earth is extremely hot, and material in the mantle close to the core is heated...

Hope that help <3

5 0
2 years ago
A runner travels at a constant speed of 4 m/s. What happens to the velocity of the runner when the runner changes direction?
ANTONII [103]

Answer:

4m/s in the direction of the turn

Explanation:

The velocity of an object is the rate of change of its position with respect to a frame of reference.

Assuming the runner stays the same speed as he turns, his velocity will be 4m/s in the speed he turns.

5 0
2 years ago
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