AND IN WITNESS WHEREOF Clause Samples

AND IN WITNESS WHEREOF the parties to this Appendix of the Agreement state their conformity and approval with the contents thereof just as it has been worded and, with my intervention, enter into it and set their hand on three equally original and authentic copies to be handed over to the parties, a copy of which will be kept in my records.

AND IN WITNESS WHEREOF the Parties sign this Agreement in a single copy in the place and on the date indicated in the heading which is delivered to the Notary for recording. REPSOL YPF, S.A. REPSOL EXPLORACIÓN, S.A. /s/ ▇▇▇▇▇▇▇ ▇▇▇▇▇▇ Niubó /s/ ▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇-▇▇▇▇▇▇ ▇▇▇▇ ▇▇ ▇▇▇▇ ▇▇. ▇▇▇▇▇▇▇ ▇▇▇▇▇▇ Niubó ▇▇. ▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇-Cuesta ▇▇▇▇ ▇▇ ▇▇▇▇ CAVEANT, S.A. REPSOL YPF CAPITAL, S.L. /s/ ▇▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇ Mazarredo /s/ ▇▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇ Mazarredo ▇▇. ▇▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇ Mazarredo ▇▇. ▇▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇ Mazarredo ▇▇▇▇▇▇▇▇ ENERGÍA, S.A. /s/ ▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇ Storey D. ▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇ ▇▇▇▇▇▇

AND IN WITNESS WHEREOF the Parties sign this Agreement in a single copy in the place and on the date indicated in the heading which is delivered to the Notary for recording. REPSOL YPF, S.A. REPSOL EXPLORACIÓN, S.A.

AND IN WITNESS WHEREOF this contract is signed in triplicate, in the place and on the date mentioned in the heading. BY THE GOVERNMENT BY THE LESSOR OF CATALONIA ANNEX 2‌

AND IN WITNESS WHEREOF. THE PARTIES HAVE SIGNED

AND IN WITNESS WHEREOF the Parties hereto have executed this Agreement as of the date written below. Signature: Signature: Seal: Seal (optional): Date: Date: SCHEDULE 1: REVIEW REQUIREMENTS FOR URL LINKS ON THE SPEED DIAL AND CORRESPONDING WEBSITES Objective: This document is formulated to guide partners to create high-quality services and content. The specific rules are as follows:

AND IN WITNESS WHEREOF the Parties sign this Agreement with its Annexes, which form an integral part hereof, in two (2) copies, at the place and on the date indicated in the heading. [DULY SIGNED] [D▇▇▇ SIGNED] /s/ R▇▇▇ ▇▇▇▇▇▇ d▇ ▇▇▇▇▇ /s/ A▇▇▇▇▇▇ ▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ ▇▇ ▇▇▇▇ APENET, S.L.U. represented by M▇. ▇▇▇▇ ▇▇▇▇▇▇ d▇ ▇▇▇▇▇ H2B2 ELECTROLYSIS TECHNOLOGIES, INC. represented by M▇. ▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇ Fernández de Mesa RATIFICATION PROTOCOL (diligencia de ratificación). (Referring to deed number 1,483 dated May thirty, two thousand and twenty-three of the public records of M▇. ▇▇▇▇▇ Casla U▇▇▇▇▇▇). ----------- On the thirty-first of May of two thousand and twenty-three, before me, I▇▇▇▇ CASLA U▇▇▇▇▇▇, Notary Public of Madrid and of the Illustrious College with residence in this Capital, --------------------------------------- --------------------APPEARING --------------------- M▇ ▇▇▇▇ ▇▇▇▇▇ PACHECO G▇▇▇▇▇▇▇▇, [***] - His personal circumstances are reflected through his statements. ----------------------------------------- ----------TAKING PART HEREIN AS FOLLOW----------- In the name and on behalf of, as Joint and Several Director of the company “APENET, S.L.”, (“the Lender”), with Tax Identification Number B-82732074, with address for these purposes in Madrid, 2▇.▇▇▇, ▇▇▇▇▇ ▇▇▇ ▇▇▇▇▇▇▇ ▇▇ ▇▇▇▇▇▇▇▇▇, number 2; incorporated for an indefinite period, by public deed dated July twenty-first, two thousand, authorized by the notary of Madrid, M▇ ▇▇▇▇▇▇▇ ▇▇▇▇▇▇ Monerri, under number 2,775 of his public records; registered with the Commercial Registry of Madrid under volume 15,521, page 148, sheet M-261073. --------------------------------------------- Its corporate purpose is to carry out investments in commercial companies and to provide economic advisory services thereof (CNAE 6420). -- He was appointed to his position, a position he asserts in force, indefinitely, under the agreements of the General Meeting of Shareholders, dated November eighteen, two thousand and sixteen, raised to public status by means of a deed granted on the November twenty-second of two thousand and sixteen, before the Notary Public of Madrid M▇ ▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ Nafría, under number 3.808 of his public records, of which I have had a copy authorized and registered (registration 4 of the company sheet). His powers are derived from his position. In my opinion, his representative powers for this sale and purchase of shares are sufficient. --------------------- The appearing party states that the identification details...

AND IN WITNESS WHEREOF the Parties hereby formalise this Agreement on two copies and to a sole end, in the place and on the date stated in the heading.