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snow_lady [41]
3 years ago
8

Which term describes weathering?

Chemistry
2 answers:
erastova [34]3 years ago
7 0

Answer:

Breaks down rocks.

Explanation:

Weathering is the breaking down of rocks often with water. For example a sea shell will get batered with water and over time form sand.

Nastasia [14]3 years ago
4 0

Answer:

Weathering means the materials like rocks, soil, woods, etc they break down in due course of time due to certain atmospheric conditions and many other biological factors.

are -

- creates sediment

- breaks down rock

- carries away fragments

Explanation:

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A rock which has a mass of 60 grams and a volume of 20ml whats the density
Dahasolnce [82]

Answer:0.67

Explanation:

6 0
2 years ago
This is Science, if you can answer this, much appreciated :) Both questions a and b, thank you!! I need this asap :)
Andrej [43]
Asap means as soom as possible i blieb
7 0
4 years ago
When 0.250 moles of LiCl are added to 200.0 g of water in a constant pressure calorimeter a temperature change of +11.08°C is ob
Nonamiya [84]

Answer:

3.91 × 10⁴ J/mol

Explanation:

We can calculate the heat of solution using the following expression.

Q = c × m × ΔT

where,

c is the specific heat capacity of the solution

m is the mass of the solution

ΔT is the change in the temperature

The mass of LiCl is:

0.250mol.\frac{42.39g}{mol} =10.6g

The mass of the solution is:

m = mLiCl + mH₂O = 10.6 g + 200.0 g = 210.6 g

Q = c × m × ΔT = (4.184 J g⁻¹ °C⁻¹) × 210.6 g × 11.08 °C = 9763 J

In a constant pressure calorimeter, the molar enthalpy of solution for LiCl is:

\Delta H_{sol}=\frac{9763J}{0.250mol} =3.91 \times 10^{4} J/mol

3 0
3 years ago
Cis-platin is a chlorine-containing chemotherapy agent with the formula pt(nh3)2cl2. What is the mass of one mole of cis-platin?
marishachu [46]

Cis-platin is a chemotherapy agent used to treat and kill cancerous cells in patients. One mole of cis-platin has a mass of 300.06 grams/mol. Thus, option B is correct.

<h3>What is a chemotherapy agent?</h3>

A chemotherapy agent is an alkylating agent that is used to treat cancer and is given to reduce the infection or to relieve the symptoms. Cis-platin (Pt(NH₃)₂Cl₂) is one of the chemotherapy agents that treat lung, ovarian, and neck cancer, etc.

The mass of one mole of Cis-platin is calculated as,

Moles = mass ÷ molar mass

Where,

Moles = 1 mole

The molar mass of (Pt(NH₃)₂Cl₂) is calculated as,

195.06 g/mole + 2(17g/mole) + (35.5)2 = 300.06 grams

Substituting values to calculate mass:

Mass = Molar mass × moles

= 300. 06  × 1

= 300.06 grams/mol

Therefore, option B. 300.06 gm/mol is the mass of Cis-platin.

Learn more about chemotherapy agents here:

brainly.com/question/14260402

#SPJ4

Your question is incomplete, but most probably your full question was, Cis-platin is a chlorine-containing chemotherapy agent with the formula pt(nh3)2cl2. What is the mass of one mole of cis-platin?

  • 488.91 g/mol
  • 300.06 g/mol
  • 492.37 g/mol
  • 283.02 g/mol
  • 2860.5 g/mol
8 0
2 years ago
What type of bond holds the complementary bases together?.
olga55 [171]

Answer:

hydrogen bonding

Explanation:

The two strands of DNA are held together by hydrogen bonds between complimentary nucleotides.

3 0
3 years ago
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